Details of a Researcher - KAMEYAMA, Wataru

写真a

KAMEYAMA, Wataru

Scopus Paper Info

Paper Count: 77 Citation Count: 272 h-index: 9

Click to view the Scopus page. The data was downloaded from Scopus API in April 23, 2024, via http://api.elsevier.com and http://www.scopus.com .

Affiliation

Faculty of Science and Engineering, School of Fundamental Science and Engineering

Job title

Professor

Degree

Dr. of Engineering ( Waseda University )
Master of Engineering ( Waseda University )

Homepage URL

http://www.km.comm.waseda.ac.jp/

Research Experience

2014

-

　

Today: Professor at Dept. of Communications and Computer Eng., Waseda University
2002

-

2014

: Professor at GITS, Waseda University
1999

-

2002

: Associate Professor at GITI, Waseda University
1998

-

1999

: Director and Chief Engineer at Media Glue
1997

-

1998

: Chief Researcher at ASCII Laboratories
1993

-

1997

: Senior Researcher at Graphics Communication Laboratories
1994

-

1996

: Transferred to France Telecom CCETT
1992

-

1993

: Senior Researcher at GC Technology
1989

-

1992

: Assistant Prof at School of Sci. and ENg., Waseda University

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Education Background

　

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1990

Waseda University Graduate School of Science and Engineering Electronics Engineering
　

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1987

Waseda University Graduate School of Science and Engineering Electronics Engineering
　

-

1985

Waseda University School of Science and Engineering Electronics Communication Engineering

Professional Memberships

　

　

　

Association for Computing Machinery
　

　

　

The Institute of Electrical and Electronics Engineers
　

　

　

The Institute of Image Electronics Engineers of Japan
　

　

　

Informatin Processing Society of Japan
　

　

　

The Institute of Electronics, Information and Communication Engineers
　

　

　

Information Processing Society of Japan
　

　

　

The Institute of Image Information and Television Engineers

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Research Areas

Database / Computer system / Communication and network engineering

Research Interests

Information Communication System, Multimedia Information Processing, Information Communication Engineering, Content Distribution System, Metadata, Digital Rights Management System

Awards

International Cooperation Award from the ITU Association of Japan

2012.05
IEICE Communication Society: Distinguished Contributions Award

2009.09
The Best Author Award of Niwa-Takayanagi from the Institute of Image Information and Television Engineers

2009.05
IEICE Communication Society: Outstanding Contributions Award

2007.09
The Best Paper Award of Niwa-Takayanagi from the Institute of Image Information and Television Engineers

2006.05

Papers

Efficient producer mobility support in named data networking

Siran Zhang, Zhiwei Yan, Yong-Jin Park, Hidenori Nakazato, Wataru Kameyama, Kashif Nisar, Ag Asri Ag Ibrahim

IEICE Transactions on Communications E100B ( 10 ) 1856 - 1864 2017.10 [Refereed]

　View Summary

Named Data Networking (NDN) is a promising architecture for the future Internet and it is mainly designed for efficient content delivery and retrieval. However, producer mobility support is one of the challenging problems of NDN. This paper proposes a scheme which aims to optimize the tunneling-based producer mobility solution inNDN. It does not require NDN routers to change their routing tables (Forwarding Information Base) after a producer moves. Instead, the Interest packet can be sent from a consumer to the moved producer using the tunnel. The piggybacked Data packet which is sent back to the consumer will trigger the consumer to send the following Interest packets through the optimized path to the producer. Moreover, a naming scheme is proposed so that the NDN caching function can be fully utilized. An analysis is carried out to evaluate the performance of the proposal. The results indicate that the proposed scheme reduces the network cost compared to related works and supports route optimization for enhanced producer mobility support in NDN.

DOI

Scopus

8

Citation

(Scopus)
Proactive Content Caching for Mobile Video Utilizing Transportation Systems and Evaluation Through Field Experiments

Kenji Kanai, Takeshi Muto, Jiro Katto, Shinya Yamamura, Tomoyuki Furutono, Takafumi Saito, Hirohide Mikami, Kaoru Kusachi, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 34 ( 8 ) 2102 - 2114 2016.08 [Refereed]

　View Summary

In order to provide high-quality and highly reliable video delivery services for mobile users, especially train passengers, we propose a proactive content caching scheme that uses transportation systems. In our system, we place content servers with cache capability [e.g., content centric networking/named data networking (CCN/NDN)] in every train and station. Video segments encapsulated by MPEG-Dynamic Adaptive Streaming over HTTP (MPEG-DASH) are distributed and pre-cached by the station servers before the trains arrive at the stations. The trains receive content via high-speed wireless transport, such as wireless LANs or millimeter waves, when they stop at the stations. We developed prototype systems based on hypertext transfer protocol and CCN/NDN protocol, evaluate their performance through two field experiments that uses actual trains, and compare with traditional video streaming over cellular networks. Such evaluations indicate that our system can achieve high-quality video delivery without interruption for up to 50 users simultaneously.

DOI

Scopus

39

Citation

(Scopus)
Content Oriented Surveillance System Based on Information-Centric Network.

Xin Qi, Zheng Wen, Toshitaka Tsuda, Wataru Kameyama, Kouichi Shibata, Jiro Katto, Takuro Sato

2016 IEEE Globecom Workshops, Washington, DC, USA, December 4-8, 2016 1 - 6 2016 [Refereed]

DOI

Scopus

13

Citation

(Scopus)
Performance Evaluation of Proactive Content Caching for Mobile Video through 50-User Field Experiment.

Kenji Kanai, Takeshi Muto,Array, Shinya Yamamura, Tomoyuki Furutono, Wataru Kameyama,Array, Takuro Sato, Takafumi Saito, Hirohide Mikami, Kaoru Kusachi, Toshitaka Tsuda

2015 IEEE Globecom Workshops, San Diego, CA, USA, December 6-10, 2015 1 - 6 2015 [Refereed]

DOI

Scopus

4

Citation

(Scopus)
Two phases outlier detection in different subspaces

Zhana Bao, Wataru Kameyama

International Conference on Information and Knowledge Management, Proceedings 2014- ( November ) 57 - 62 2014.11 [Refereed]

　View Summary

Mining high dimensional outliers is not fully resolved for its dimensional particularity. The existing full space based methods can find distinct outliers and neglect those hidden in some subspaces. Subspace based approaches can detect most outliers that are apparent in low dimensional spaces, while missing the invisible outliers in subspaces. This paper proposes a novel two-phase inspection model. The first phase measures neighbor's density in subspaces to find low dimensional outliers. The second phase evaluates deviation degree of neighbors in connected subspaces. The undiscovered outliers appear a fast dispersion and scatter more than its neighbors. We analysis two-phase results statistically, and merge into one score for each object. The outliers are expressed with top score objects. The evaluation on synthetic and real data sets shows that our proposal outperform state of the art algorithms in high dimensional outlier issue.

DOI

Scopus

1

Citation

(Scopus)
基礎律動を用いた音楽の分類に関する基礎的検討

三木亮祐, 亀山渉, 菅沼睦

電子情報通信学会, HIP研究会, 信学技報 114 ( 68 HIP2014-28 ) 211 - 216 2014.05
瞳孔径の対光反射瞳孔応答モデルと個人内変動に関する検討

李博, 菅沼睦, 亀山渉

電子情報通信学会, 2014年総合大会 A-15-11 2014.03
コミック読書時の瞬目と瞳孔径変動の関係性

松井健, 亀山渉, 菅沼睦

電子情報通信学会, 2014年総合大会 A-15-12 2014.03
先回り配信スケジューリングの特性評価と複数チャネル拡張

金井謙治, 甲藤二郎, 津田俊隆, 亀山渉

電子情報通信学会, 2014年総合大会 B-6-39 2014.03
B-6-86 Mobility Support in ICN Testbed

Muto Takeshi, Katto Jiro, Tsuda Toshitaka, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 ( 2 ) 86 - 86 2014.03

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B-6-88 Proactive Content Caching and Delivery Scheme utilizing Transportation Systems

Sato Takuro, Park Yong Jin, Tsuda Toshitaka, Goto Shigeki, Tanaka Yoshiaki, Kameyama Wataru, Shimamoto Shigeru, Katto Jiro, Ichino Masatsugu

Proceedings of the IEICE General Conference 2014 ( 2 ) 88 - 88 2014.03

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B-6-89 Simulation Evaluation of the Content Delivery System utilizing Transportation Systems

Kisara Hiroto, Katto Jiro, Tsuda Toshitaka, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 ( 2 ) 89 - 89 2014.03

CiNii
B-6-96 Proactive Content Caching and Delivery Scheme using Hybrid Protocols of CCN and IP utilizing Transportation Systems

KAMEYAMA Wataru, TSUDA Toshitaka, Katto Jiro

Proceedings of the IEICE General Conference 2014 ( 2 ) 96 - 96 2014.03

CiNii
画像検索システムにおける日本語WordNetを利用した単語間類似度計算手法の比較

陳豊, 亀山渉

電子情報通信学会, 2014年総合大会 D-4-10 2014.03
視線情報による画像識別に向けた瞳孔径特徴量の提案

西口侑希, 菅沼睦, 亀山渉

電子情報通信学会, 2014年総合大会 D-12-15 2014.03
Image Retrieval System based on Word-Similarity using Japanese WordNet

Feng Chen, Wataru Kameyama

IPSJ SIG Notes 2014 ( 7 ) 1 - 5 2014.02

　View Summary

We have proposed a regional information-platform which delivers audiovisual contents automatically that are retrieved with some popular keywords automatically extracted from Web pages and/or SNS related to the region. In this paper, the content retrieval part of the proposed system is described. The image retrieval method based on word-similarity between popular keywords and content metadata using HBase and Japanese WordNet, as well as the experiments using images provided by a newspaper company is explained.

CiNii
Performance Analysis and Experimental Validation of Proactive Delivery Scheduling in the Content Delivery System utilizing Transportation Systems

KANAI Kenji, MUTO Takeshi, KATTO Jiro, TSUDA Toshitaka, KAMEYAMA Wataru

IEICE technical report 113 ( 472 ) 479 - 484 2014.02

　View Summary

We have introduced a proactive content delivery system utilizing transportation systems for next generation mobile networks. In this paper, we propose a proactive delivery scheduling, which is called "Smart Scheduler." This scheduler calculates contents quality and quantity and also selects delivery location and timing. To validate and evaluate our method, we experiment in the real environments. Experimental results conduct that our method performs effectively.

CiNii
Proactive Content Caching utilizing Transportation Systems and its Evaluation by Field Experiment

Kenji Kanai, Takeshi Muto, Hiroto Kisara, Jiro Katto, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

2014 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM 2014) 1382 - 1387 2014 [Refereed]

　View Summary

Providing robust content delivery along with efficient wireless resource usage is important for next generation wireless networks. To achieve this, we propose a proactive content caching scheme utilizing transportation systems, especially trains. In our system, we place content servers with CCN capability to every train and station. Segments of video contents are pre-cached by the station servers before trains arrive at stations. Trains receive the contents via high-speed wireless transport while they stop at the stations. We develop a prototype system based on IP and CCN Hybrid protocols. We evaluate its performance by field experiment and compare with traditional CDN scenarios using cellular networks. Evaluations conclude that our system can achieve high-speed and high-reliable video delivery without freezing.

DOI

Scopus

16

Citation

(Scopus)
Development and Evaluation of Regional Information Platform and Information Distribution System : For Tourism Promotion and Disaster Prevention

MIYOSAWA Tadashi, HIROSE Hiroo, TSUCHIYA Takeshi, KAMEYAMA Wataru, KOYANAGI Keiichi, YAMAMOTO Hisashi, KARASAWA Hideyasu, KARASAWA Hidenaga, MASUZAWA Kenichi

IEICE technical report. Communication systems 113 ( 339 ) 135 - 140 2013.11

　View Summary

As the main focus of this research, we constructed an experimental website for the communication broadcasting cooperative transmission system and developed a regional information platform. In addition, we carried out a small-scale demonstration experiment at the Chino station.

CiNii
Khmer Word Segmentation and Out-of-Vocabulary Words Detection Using Collocation Measurement of Repeated Characters Subsequences

Channa Van, Wataru Kameyama

早稲田大学大学院国際情報通信研究科/早稲田大学国際情報通信研究センタ-, GITS/GITI紀要2012-2013 2012-2013 21 - 31 2013.10

CiNii
HBaseマッピングによる日本語WordNetを利用した番組等検索システムに関する研究

陳豊, Sriprasertsuk Pao, 亀山渉

情報科学技術フォーラム FIT 2013 D-026 2013.09
Comparison of In-Vehicle Navigation Guidance by Fixed-Spot, Voice and Gazing-Point

Mohammad Abdullah A Almogbel, Pao Sriprasertsuk, 菅沼睦, 亀山渉

情報科学技術フォーラム FIT 2013 J-006 2013.09
コミック読書時におけるページ滞留時間と瞬目を利用した興味度推定に関する基礎的検討

松井健, 菅沼睦, パオスィープラサスック, 亀山渉

情報科学技術フォーラム FIT 2013 J-023 2013.09
脳波による味の好き嫌い判別に関する基礎的検討

台彬, パオスィープラサスック, 菅沼睦, 亀山渉

情報科学技術フォーラム FIT 2013 J-024 2013.09
Fish Detection by LBP Cascade Classifier with Optimized Processing Pipeline

Dang Hoang Anh, Sriprasertsuk Pao, Kameyama Wataru

情報処理学会, オーディオビジュアル複合情報処理研究会 2013-AVM-82 ( 9 ) 2013.09
Preliminary Analysis on Correlation of Comic Reading Time and Comic Components

Ken Matsui, Mutsumi Suganuma, Pao Sriprasertsuk, Wataru Kameyama

2013 International Workshop on Smart Info-Media Systems in Asia (SISA2013) SS-AVM-3 2013.09
Discovering Similarity of User Viewing Behavior using Gazing-Path

Pakornchat Pojanapreecha, Pao Sriprasertsuk, Mutsumi Suganuma, Wataru Kameyama

2013 International Workshop on Smart Info-Media Systems in Asia (SISA2013) SS-AVM-4 2013.09
A Novel Proposal for Outlier Detection in High Dimensional Space

Zhana Bao, Wataru Kameyama

The 17th Pacific-Asia Conference on Knowledge Discovery and Data Mining, The 3rd Quality Issues, Measures of Interestingness and Evaluation of Data Mining Models Workshop (QIMIE'13) No.3 2013.04
A-15-10 A Consideration for Optimized Parameters of Pupil Reaction Model

Ri Haku, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2013 198 - 198 2013.03

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Evaluation on Comic Reader's Interest using Pupil Size

Sokhour Ny, Mutsumi Suganuma, Pao Sriprasertsuk, Wataru Kameyama

電子情報通信学会 2013年総合大会 A-15-12 2013.03
A-15-14 A Relationship Analysis between User's Pupil Size and Background Activity against Audiovisual Sequences

Kawamura Eri, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2013 202 - 202 2013.03

CiNii
A Character-Clusters N-Grams Indexing Approach for Khmer Information Retrieval System

Channa Van, Wataru Kameyama

電子情報通信学会 2013年総合大会 D-5-4 2013.03
WordNetを利用した番組等検索システムに関する研究

陳豊, Pao Sriprasertsuk, 亀山渉

電子情報通信学会 2013年総合大会 D-5-5 2013.03
A novel proposal for outlier detection in high dimensional space

Zhana Bao, Wataru Kameyama

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 7867 307 - 318 2013 [Refereed]

　View Summary

Finding rare information behind big data is important and meaningful for outlier detection. However, to find such rare information is extremely difficult when the notorious curse of dimensionality exists in high dimensional space. Most of existing methods fail to obtain good result since the Euclidean distance cannot work well in high dimensional space. In this paper, we first perform a grid division of data for each attribute, and compare the density ratio for every point in each dimension. We then project the points of the same area to other dimensions, and then we calculate the disperse extent with defined cluster density value. At last, we sum up all weight values for each point in two-step calculations. After the process, outliers are those points scoring the largest weight. The experimental results show that the proposed algorithm can achieve high precision and recall on the synthetic datasets with the dimension varying from 100 to 10000. © Springer-Verlag 2013.

DOI

Scopus

2

Citation

(Scopus)
A Consideration on Comic Reader's Behavior using Gaze Path and Pupil Size

Sokhour Ny, Mutsumi Suganuma, Pao Sriprasertsuk, Wataru Kameyama

情報処理学会, オーディオビジュアル複合情報処理研究会 2012-AVM-79 ( No.26 ) 2012.12
映像視聴時における視聴者の瞳孔と基礎律動情報の関係分析に関する一検討

川村愛莉, 菅沼睦, 亀山渉

電子情報通信学会 HCGシンポジウム 2012 I-1-4 2012.12
Personalized TV-program Recommendation using User's Viewing Histories and Time-Frames

Quoc Hung Dinh, Pao Sriprasertsuk, 亀山渉, 福田健二

情報科学技術フォーラム FIT 2011 I-036 2012.09
J-009 A Consideration on Analysis of User Response against Audiovisual Sequence using Pupil Size and Background Activity

Kawamura Eri, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム FIT 2011 11 ( 3 ) 425 - 426 2012.09

CiNii
Efficient Scale Database Construction for Scale Filtering in SURF-based AR Application

Hoang Anh Dang, Pao Sriprasertsuk, 亀山渉

情報科学技術フォーラム FIT 2011 K-007 2012.09
Ultilizing Users' Watching Sequences and TV-programs' Metadata for Personalized TV-program Recommendation

Dinh Quoc Hung, Pao Sriprasertsuk, Wataru Kameyama, Kenji Fukuda

情報処理学会, オーディオビジュアル複合情報処理研究会 2012-AVM-77(11) 2012.07
Museum Metadata Description Language Supporting Different Distributed Schema

AKIMOTO Ryoji, KAMEYAMA Wataru

情報知識学会誌 22 ( 1 ) 9 - 22 2012.03

　View Summary

This paper proposes a new description language, called FS (Fuzzy Schema). FS language supports a collection framework to coordinate schemas authored independently. The framework brings a benefit into museum metadata description: information interoperability. We describe that FS language enables the effective interchange of museum metadata across museum and art museum.

DOI CiNii
映像視聴に伴う視聴者の感情変化推定に関する基礎的検討

菅沼睦, 川村愛莉, 亀山渉

電子情報通信学会, 通信行動工学時限研専, 第二回研究会 2012.03
On Employing Content-aware Retargeted Image in Automatic Image Annotation

Supheakmungkol Sarin, Wataru Kameyama

電子情報通信学会 2012年総合大会 BS-3-30 2012.03
Automatic Discovering of Word Relationships in Khmer

Channa Van, Wataru Kameyama

電子情報通信学会 2012年総合大会 D-5-13 2012.03
A Study on Applying Outlier Detection for Network Intrusion Detection

Zhana Bao, Wataru Kameyama

電子情報通信学会 2012年総合大会 BS-3-11 2012.03
Leveraging features from background and salient regions for automatic image annotation

Supheakmungkol Sarin, Michael Fahrmair, Matthias Wagner, Wataru Kameyama

Journal of Information Processing 20 ( 1 ) 250 - 266 2012 [Refereed]

　View Summary

In this era of information explosion, automating the annotation process of digital images is a crucial step towards efficient and effective management of this increasingly high volume of content. However, this still is a highly challenging task for the research community. One of the main bottlenecks is the lack of integrity and diversity of features. We propose to solve this problem by utilizing 43 image features that cover the holistic content of the image from global to subject, background and scene. In our approach, salient regions and the background are separated without prior knowledge. Each of them together with the whole image are treated independently for feature extraction. Extensive experiments were designed to show the efficiency and the effectiveness of our approach. We chose two publicly available datasets manually annotated with diverse nature of images for our experiments, namely, the Corel5K and ESP Game datasets. We confirm the superior performance of our approach over the use of a single whole image using sign test with p-value &lt
0.05. Furthermore, our combined feature set gives satisfactory performance compared to recently proposed approaches especially in terms of generalization even with just a simple combination. We also obtain a better performance with the same feature set versus the grid-based approach. More importantly, when using our features with the state-of-the-art technique, our results show higher performance in a variety of standard metrics. © 2012 Information Processing Society of Japan.

DOI

Scopus
Museum Metadata Description Language Supporting Different Distributed Schema

AKIMOTO Ryoji, KAMEYAMA Wataru

Journal of Japan Society of Information and Knowledge 22 ( 1 ) 9 - 22 2012

　View Summary

This paper proposes a new description language, called FS (Fuzzy Schema). FS language supports a collection framework to coordinate schemas authored independently. The framework brings a benefit into museum metadata description: information interoperability. We describe that FS language enables the effective interchange of museum metadata across museum and art museum.

DOI CiNii
Leveraging features from background and salient regions for automatic image annotation

Supheakmungkol Sarin, Michael Fahrmair, Matthias Wagner, Wataru Kameyama

Journal of Information Processing 20 ( 1 ) 250 - 266 2012

　View Summary

In this era of information explosion, automating the annotation process of digital images is a crucial step towards efficient and effective management of this increasingly high volume of content. However, this still is a highly challenging task for the research community. One of the main bottlenecks is the lack of integrity and diversity of features. We propose to solve this problem by utilizing 43 image features that cover the holistic content of the image from global to subject, background and scene. In our approach, salient regions and the background are separated without prior knowledge. Each of them together with the whole image are treated independently for feature extraction. Extensive experiments were designed to show the efficiency and the effectiveness of our approach. We chose two publicly available datasets manually annotated with diverse nature of images for our experiments, namely, the Corel5K and ESP Game datasets. We confirm the superior performance of our approach over the use of a single whole image using sign test with p-value &lt
0.05. Furthermore, our combined feature set gives satisfactory performance compared to recently proposed approaches especially in terms of generalization even with just a simple combination. We also obtain a better performance with the same feature set versus the grid-based approach. More importantly, when using our features with the state-of-the-art technique, our results show higher performance in a variety of standard metrics. © 2012 Information Processing Society of Japan.

DOI

Scopus
Leveraging Features from Background and Salient Regions for Automatic Image Annotation

Supheakmungkol Sarin, Michael Fahrmair, Matthias Wagner, Wataru Kameyama

情報処理学会論文誌 52 ( 12 ) 2011.12
Latent factor model for user preferences and prediction of TV program in IPTV environment

Quoc Hung Dinh, Pao Sriprasertsuk, Wataru Kameyama

情報科学技術フォーラム FIT 2011 I-018 2011.09
Task level SURF keypoint extraction parallelization in AR application

Hoang Anh Dang, Pao Sriprasertsuk, Wataru Kameyama

情報科学技術フォーラム FIT 2011 K-054 2011.09
A Proposal on Flexible Information Management System for Next Generation of Museum

情報科学技術フォーラム FIT 2011 B-023 2011.09
A Comparison With 1D Four Descriptor and Generic Fourier Descriptor on Khmer OCR

Vanna Kruy, Wataru Kameyama

情報科学技術フォーラム FIT 2011 H-055 2011.09
A Proposal for Outlier Detection in High Dimensional Space

扎那, 亀山渉

情報処理学会第73回全国大会 5J-1 2011.03
A Proposed Multi-Feature Extraction Method for Khmer OCR

Vanna Kruy, 亀山渉

情報処理学会第73回全国大会 2U-4 2011.03
Holistic feature extraction for automatic image annotation

Supheakmungkol Sarin, Michael Fahrmair, Matthias Wagner, Wataru Kameyama

Proceedings of the 2011 5th FTRA International Conference on Multimedia and Ubiquitous Engineering, MUE 2011 59 - 66 2011 [Refereed]

　View Summary

Automating the annotation process of digital images is a crucial step towards efficient and effective management of this increasingly high volume of content. It is, nevertheless, an extremely challenging task for the research community. One of the main bottle necks is the lack of integrity and diversity of features. We solve this problem by proposing to utilize 43 image features that cover the holistic content of the image from global to subject, background, and scene. In our approach, saliency regions and background are separated without prior knowledge. Each of them together with the whole image is treated independently for feature extraction. Extensive experiments were designed to show the efficiency and effectiveness of our approach. We chose two publicly available datasets manually annotated and with the diverse nature of images for our experiments, namely, the Corel5k and ESP Game datasets. They contain 5,000 images with 260 keywords and 20,770 images with 268 keywords, respectively. Through empirical experiments, it is confirmed that by using our features with the state-of-the-art technique, we achieve superior performance in many metrics, particularly in auto-annotation. © 2011 IEEE.

DOI

Scopus

5

Citation

(Scopus)
Video Summary Based on Human Bio-signals -Evaluation of its Applicability to First-Time Viewers

Kok-Meng Ong, Wataru Kameyama

In Proc. of 2nd International Symposium on Aware Computing SS 2-2 2010.11
瞳孔径・視線と心拍情報を用いた映像要約方法とその評価

オンコックメン, 大野雄也, 亀山渉

電子情報通信学会論文誌A J93-A ( No.11 ) 697 - 707 2010.11
A Rule-based Approach for Khmer Word Extraction

Channa Van, Wataru Kameyama

情報科学技術フォーラム FIT 2010 E-007 2010.09
Preliminary Experiment On Khmer OCR

Vanna Kruy, Wataru Kameyama

情報科学技術フォーラム FIT 2010 H-010 2010.09
Query Expansion for Khmer Information Retrieval

Channa Van, Wataru Kameyama

In Proc. of the 8th Workshop on Asian Language Resources 2010.08
Modeling User's Benefit for Hybrid Broadcast and Communication System Optimization

MIYOSAWA Tadashi, KAMEYAMA Wataru

The transactions of the Institute of Electronics, Information and Communication Engineers. B 93 ( 4 ) 639 - 648 2010.04

CiNii
Building a Khmer Text Corpus

Channa Van, 亀山渉

情報処理学会第72回全国大会 4W-1 2010.03
瞳孔径と心拍動を利用した映像要約手法と主観評価

大野雄也, オンコックメン, 亀山渉

信学技報 PRMU2009-249/HIP2009-134 2010.03
生体信号を利用した映像要約手法とその評価

大野雄也, オンコックメン, 亀山渉

電子情報通信学会2010総合大会 A-15-1 2010.03
顕著性マップと顔マップを利用したビデオショットの注視点予測の考察

オンコックメン, 亀山渉

電子情報通信学会2010総合大会 A-15-2 2010.03
Holistic Image Features Extraction for Better Image Annotation

Supheakmungkol SARIN, Wataru KAMEYAMA

電子情報通信学会2010総合大会 D-11-103 2010.03
『日本ニュース映画』を対象としたデジタルアーカイブシステムの構築とその評価

守屋豊, 亀山渉

情報処理学会, 電子化知的財産・社会基盤研究会 2009-EIP-47 (5) 2010.02
Affective and Holistic Approach at TRECVID 2010 Task - Semantic Indexing (SIN).

Kok-Meng Ong, Supheakmungkol Sarin, Wataru Kameyama

TRECVID 2010 workshop participants notebook papers, Gaithersburg, MD, USA, November 2010 2010 [Refereed]
Real-life classroom scenario of m-learning improvements using features of Massive Multiplay Online Games and Instructional Design

Mohd. Firdaus Md. Khalid, Wataru Kameyama

International Journal of Advanced Media and Communication 4 ( 3 ) 203 - 218 2010 [Refereed]

　View Summary

We have developed a prototype system of integrating immersive elements from Massive Multiplayer Online Games (MMOG) and systematic principles of Instructional Design (ID) Methodology into Mobile learning (m-learning), in order to counter m-learning's preceding problems of low motivational level towards learning and weak standards to deliver the learning environment. Experiments were conducted on the prototype system with volunteered students to produce notable results for further analysis. This paper reports on the comparison of academic test results obtained between an existing m-learning system and our developed proposed system, conducted in a real-life classroom scenario. Copyright © 2010 Inderscience Enterprises Ltd.

DOI

Scopus

1

Citation

(Scopus)
2009 ITE Annual Convention

KAMEYAMA Wataru

The Journal of the Institute of Image Information and Television Engineers 63 ( 12 ) 1790 - 1794 2009.12

DOI CiNii
A Proposal of Video Summarization Using Pupil Size and Heart Rate (瞳孔径と心拍を用いた映像要約の検討)

Kok-meng ONG, Yuya ONO, Wataru KAMEYAMA

電子情報通信学会 HCG (Human Communication Group) シンポジウム A1-2 2009.12
博物館におけるマルチメディア資料の活用方法に関する一考察

守屋豊, 亀山渉, 井出明

日本観光学会第99回全国大会 44 - 45 2009.10
Analysis of Human Gaze in Videos with Human Face - Comparison of Gaze Distance with Detected Face and Motion Center

Kok Meng Ong, 亀山渉

情報科学技術フォーラム FIT 2009 J-007 2009.09
複数の生体信号を利用した要約映像作成に関する一考察

大野雄也, 王国明, 亀山渉

情報科学技術フォーラム FIT 2009 J-025 2009.09
コンテンツの二次利用における改編制御及び権利処理システムの実装と評価

王元綱, 関亜紀子, 亀山渉

情報科学技術フォーラム FIT 2009 N-009 2009.09
Classifying High Quality Digital Photographs by Creative Exposure Themes

Supheakmungkol Sarin, Wataru Kameyama

Proc. of 3rd BCS-IRSG Symposium on Future Directions in Information Access 2009. BCS eWiC Series 128 - 130 2009.09
Joint Equal Contribution of Global and Local Features for Image Annotation

Supheakmungkol Sarin, Wataru Kameyama

Working Notes of CLEF Workshop 2009 2009.09
Shifting of Lecturer's Role into Mobile Learning

Firdaus Md Khalid, Wataru KAMEYAMA

Proc. of the Second International Conference on the Applications of Digital Information and Web Technologies (ICADIWT 2009) 2009.08
人間の感情を利用した映像要約手法 -視線と瞳孔を用いた手法-

Kok-Meng Ong, Wataru KAMEYAMA

2009年映像情報メディア学会年次大会 7-6 2009.08
Evaluation of Video Abstraction Based on Pupil Size and Gazing Point視線と瞳孔に基づく映像要約手法の評価 (視線と瞳孔に基づく映像要約手法の評価)

Kok-Meng Ong, Wataru KAMEYAMA

信学技報 HIP 2009-55 2009.06
『日本ニュース映画』デジタルアーカイブの構築とアーカイブマネジメントに関する考察

守屋豊, 亀山渉

情報処理学会, 電子化知的財産・社会基盤研究会 2008-EIP-44 (2) 2009.06
Evaluation on Email Classification System by Importance

Peilin Chiang, 亀山渉

電子情報通信学会2009総合大会 D-9-26 2009.03
Raw Relationships in Aesthetic Photos by Optical Features

Supheakmungkol SARIN, Wataru KAMEYAMA

電子情報通信学会2009総合大会 D-12-38 2009.03
『日本ニュース映画』を対象としたデジタルアーカイブ構築についての一考察

守屋豊, 亀山渉

情報処理学会, 電子化知的財産・社会基盤研究会 2008-EIP-43 (9) 2009.02
視線の動きと映像のモーションセンターの動きの類似度に基づく映像要約手法の検討

オンコックメン, 亀山渉

情報処理学会, オーディオビジュアル複合情報処理研究会 2009-AVM-064 (9) 2009.02
Classification and quality assessment of high quality digital photographs

Supheakmungkol Sarin, Wataru Kameyama

MM'09 - Proceedings of the 2009 ACM Multimedia Conference, with Co-located Workshops and Symposiums 1137 - 1138 2009 [Refereed]

　View Summary

We are interested in high quality photographs. This paper outlines our research proposal for the tasks of classification and quality assessment. We address these challenges by exploring the aesthetics from the combined perspectives of the artists and the photographers. We propose to use the aesthetic primitives of images for visualization as a guideline for high and low-level image feature extraction and to classify this high quality content into six creative exposure themes, which are commonly followed by the professional photographers. Then, we suggest to evaluate the quality of the photograph accordingly to these themes. We solve the problems using statistical modeling and learning approach.

DOI

Scopus

1

Citation

(Scopus)
Extended rights vocabulary for authoring tools interoperability

Yuan-Kang Wang, Akiko Seki, Wataru Kameyama

1st International Conference on Internet Multimedia Computing and Service, ICIMCS 2009 238 - 243 2009 [Refereed]

　View Summary

In the present content distribution environment, many types of digital content exist, and there are many ways in which the content can be consumed and reused. Since content consumers can easily distribute their content to other users, the demand for re-edited content or "secondary content" has increased. In the long term, for any rights management system to be accepted by the market place, the system must effectively manage how different rights are granted under different usage request scenarios, provide a mechanism to enable clear rights description, precise control usage, and handle the derived rights. This paper presents a set of extended rights vocabulary for authoring tools, which manages usage control of copyrighted content. We consider the common features of modern authoring tools, and design a comprehensive rights schema for interactive video-editing systems. With our proposed rights vocabulary and framework, we can derive works that respect the rights of the original content owners, and the corresponding license(s) can be automatically generated based on various content authoring scenarios. Copyright 2009 ACM.

DOI

Scopus
Joint Equal Contribution of Global and Local Features for Image Annotation.

Supheakmungkol Sarin, Wataru Kameyama

Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30 - October 2, 2009. 2009 [Refereed]
Information distribution analysis based on human's behavior state model and the small-world network

Pao Sriprasertsuk, Wataru Kameyama

IEICE Transactions on Information and Systems E92-D ( 4 ) 608 - 619 2009 [Refereed]

　View Summary

In this paper, an information distribution model based on human's behavior is proposed. We also propose dynamic parameters to make the model more practical for real life social network. Subsequently, the simulations are conducted based on the small-world network and its characteristics, and the parameters in the model are analyzed to increase e.ciently the power of information distribution. Our study and simulation results show that the proposed model can be used to analyze and predict the e.ectiveness of information distribution. Moreover, the study also shows how to use the model parameters to increase power of the distribution. Copyright © 2009 The Institute of Electronics, Information and Communication Engineers.

DOI

Scopus

4

Citation

(Scopus)
Classification of video shots based on human affect

Kok-Meng Ong, Wataru Kameyama

Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers 63 ( 6 ) 847 - 856 2009

　View Summary

This study addresses the challenge of analyzing affective video content. The affective content of a given video is defined as the intensity and the type of emotion that arise in a viewer while watching that video. In this study, human emotion was monitored by capturing viewers' pupil sizes and gazing points while they were watching the video. On the basis of the measurement values, four features were extracted (namely cumulative pupil response (CPR), frequency component (FC), modified bivariate contour ellipse area (mBVCEA) and Gini coefficient). Using principal component analysis, we have found that two key features, namely the CPR and FC, contribute to the majority of variance in the data. By utilizing the key features, the affective content was identified and could be used in classifying the video shots into their respective scenes. An average classification accuracy of 71.89% was achieved for three basic emotions, with the individual maximum classification accuracy at 89.06%. The development in this study serves as the first step in automating personalized video content analysis on the basis of human emotion.

DOI

Scopus

5

Citation

(Scopus)
Classification and quality assessment of high quality digital photographs

Supheakmungkol Sarin, Wataru Kameyama

MM'09 - Proceedings of the 2009 ACM Multimedia Conference, with Co-located Workshops and Symposiums 1137 - 1138 2009

　View Summary

We are interested in high quality photographs. This paper outlines our research proposal for the tasks of classification and quality assessment. We address these challenges by exploring the aesthetics from the combined perspectives of the artists and the photographers. We propose to use the aesthetic primitives of images for visualization as a guideline for high and low-level image feature extraction and to classify this high quality content into six creative exposure themes, which are commonly followed by the professional photographers. Then, we suggest to evaluate the quality of the photograph accordingly to these themes. We solve the problems using statistical modeling and learning approach.

DOI

Scopus

1

Citation

(Scopus)
Extended rights vocabulary for authoring tools interoperability

Yuan-Kang Wang, Akiko Seki, Wataru Kameyama

1st International Conference on Internet Multimedia Computing and Service, ICIMCS 2009 58 238 - 243 2009

　View Summary

In the present content distribution environment, many types of digital content exist, and there are many ways in which the content can be consumed and reused. Since content consumers can easily distribute their content to other users, the demand for re-edited content or "secondary content" has increased. In the long term, for any rights management system to be accepted by the market place, the system must effectively manage how different rights are granted under different usage request scenarios, provide a mechanism to enable clear rights description, precise control usage, and handle the derived rights. This paper presents a set of extended rights vocabulary for authoring tools, which manages usage control of copyrighted content. We consider the common features of modern authoring tools, and design a comprehensive rights schema for interactive video-editing systems. With our proposed rights vocabulary and framework, we can derive works that respect the rights of the original content owners, and the corresponding license(s) can be automatically generated based on various content authoring scenarios. Copyright 2009 ACM.

DOI

Scopus
Shifting of Lecturer's Instructional Role in M-learning

Mohd Firdaus Md Khalid, Wataru Kameyama

2009 SECOND INTERNATIONAL CONFERENCE ON THE APPLICATIONS OF DIGITAL INFORMATION AND WEB TECHNOLOGIES (ICADIWT 2009) 204 - 209 2009 [Refereed]

　View Summary

This paper discusses the role of lecturers in mobile learning plans in higher educational institutions and how that position be different from universities utilizing traditional classroom settings. This will be followed on consideration analysis on the impact of integrating instructional methodology; techniques to improve the universities approachability to and stance toward M-learning; as well as the duties of the faculty to adapt on accepting M-learning. Further on, the paper will also emphasis on a developed software to assist lecturers into adapting towards a better mobile learning future. This paper ends with a conclusion and future plans.

DOI

Scopus
コンテンツの改編機能を制御する権利記述方式の提案

王元綱, 関亜紀子, 亀山渉

情報処理学会, 電子化知的財産・社会基盤研究会 2008-EIP-42 (6) 2008.11
Webリソースからのオントロジ自動構築法の基礎的検討

村田智紘, 秋元良仁, 亀山渉

情報処理学会, ディジタルドキュメント研究会 2008-DD-069 (17) 2008.11
On Analysis of Illegal Content Distribution on the Small-World Network

Pao Sriprasertsuk, 亀山渉

情報処理学会, 電子化知的財産・社会基盤研究会 2008-EIP-42 (7) 2008.11
博物館用メタデータスキーマ間における類似性発見方式の基礎的検討

秋元良仁, 村田智紘, 亀山渉

情報科学技術フォーラム FIT 2008 B-021 2008.09
A Basic Consideration on E-mail Classification by Importance

江珮齢, 亀山渉

情報科学技術フォーラム FIT 2008 B-022 2008.09
Evaluation Analysis of a Game-based and Instructional Designed Mobile Learning System

Firdaus Khalid, 亀山渉

情報科学技術フォーラム FIT 2008 F-035 2008.09
Enabling Diversity in Image Retrieval Task using Clustering Approach with Commonsense Knowledge

Supheakmungkol SARIN, Wataru KAMEYAMA

情報科学技術フォーラム FIT 2008 H-015 2008.09
Video Content Analysis from Viewer's Perspective based on Pupil Size and Gazing Point

Kok Meng Ong, Wataru Kameyama

情報科学技術フォーラム FIT 2008 J-036 2008.09
A Proposal of Contents Distribution Model and Analysis of Illegal Contents Distribution on the Small-World Network

Pao Sriprasertsuk, 亀山渉

情報科学技術フォーラム FIT 2008 N-020 2008.09
コンテンツの時空間を考慮した権利記述方式の提案

王元綱, 関亜紀子, 亀山渉

情報科学技術フォーラム FIT 2008 N-021 2008.09
Targeting Diversity in Photographic Retrieval Task with Commonsense Knowledge

Supheakmungkol SARIN, Wataru KAMEYAMA

Proceedings of CLEF 2008 Workshop ISSN:1818-8044, ISBN:2-912335- 2008.09
瞳孔サイズと注視点に基づく視聴者興味の定量化

オンコックメン, 亀山渉

映像情報メディア学会, 2008年年次大会 22-4 2008.08
Experimental Results on the Integration of MMOG's Elements and Instructional Design Criteria into Mobile Learning

MD KHALID, MOHD FIRDAUS, Wataru Kameyama

情報処理学会, CE研究会 2008-CE-95 (1) 2008.07
テキストマイニングによる観光の言説比較分析

守屋豊, 井出明, 亀山渉

日本観光学会第97回全国大会予稿集 42 - 43 2008.06
放送通信融合システム最適化のためのQOEモデル

三代沢正, 亀山渉

信学技報 ICM 2008-17, pp.93-98 93 - 98 2008.05
視線情報に基づく映像要約手法の評価

応和大輔, 王国明, 亀山渉, 富永英義

情報処理学会, AVM研究会 2007-AVM-60 (8) 2008.03
人間の興味度に基づく映像要約手法の検討

応和大輔, 王国明, 亀山渉, 富永英義

電子情報通信学会2008総合大会 A-15-19 2008.03
On Consideration of Affective Understanding in Video - A Personalized Approach

Kok Meng Ong, Daisuke Owa, Wataru Kameyama

電子情報通信学会2008総合大会 A-15-20 2008.03
マルチメディア処理技術の展望

亀山渉

電子情報通信学会2008総合大会 BP-5-6 2008.03
Targeting Diversity in Photographic Retrieval Task with Commonsense Knowledge.

Supheakmungkol Sarin, Wataru Kameyama

Working Notes for CLEF 2008 Workshop co-located with the 12th European Conference on Digital Libraries (ECDL 2008) , Aarhus, Denmark, September 17-19, 2008. 2008 [Refereed]
On the design and exploitation of user's personal and public information for semantic personal digital photograph annotation

Supheakmungkol Sarin, Toshinori Nagahashi, Tadashi Miyosawa, Wataru Kameyama

Advances in Multimedia 2008 592690:1-592690:16 2008 [Refereed]

　View Summary

Automating the process of semantic annotation of digital personal photographs is a crucial step towards efficient and effective management of this increasingly high volume of content. However, this is still a highly challenging task for the research community. This paper proposes a novel solution. Our solution integrates all contextual information available to and from the users, such as their daily emails, schedules, chat archives, web browsing histories, documents, online news, Wikipedia data, and so forth. We then analyze this information and extract important semantic terms, using them as semantic keyword suggestions for their photos. Those keywords are in the form of named entities, such as names of people, organizations, locations, and date/time as well as high frequency terms. Experiments conducted with 10 subjects and a total of 313 photos proved that our proposed approach can significantly help users with the annotation process. We achieved a 33 gain in annotation time as compared to manual annotation. We also obtained very positive results in the accuracy rate of our suggested keywords.

DOI

Scopus

1

Citation

(Scopus)
A proposal on video editing system coping with rights inheritance management for secondary content

Yuan-Kang Wang, Akiko Seki, Wataru Kameyama

2008 DIGEST OF TECHNICAL PAPERS INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS 1.1-1 472 - + 2008 [Refereed]

　View Summary

This paper presents a video editing system based on the proposed rights inheritance framework for generating a secondary content. We propose Rights Inheritance Content Editor (RICE) module that provides the editing control with Digital Rights Management (DRM) according to the granted rights during the authoring process, and manages inherited rights generation for derived contents. With our proposed rights inheritance framework and RICE, a secondary content can be generated respecting the rights of original contents.

DOI

Scopus
データ放送を使った最適な放送番組連動印刷方式の開発とその評価

三代沢正, 宮坂浩一, 亀山渉

映像情報メディア学会誌 Vol.62 ( No.1 ) 61 - 68 2008.01

DOI

Scopus
Context Aware Navigation System for Hospital

Md. Humayun Kabir, Wataru Kameyama

信学技報 MoMuC 2007-67 2008.01
MVCコンテンツにおける権利記述方式の基礎的検討

王元綱, 亀山渉

情報処理学会, 電子化知的財産・社会基盤研究会 2008-EIP-39 (11) 2008.01
On the design and exploitation of user's personal and public information for semantic personal digital photograph annotation

Supheakmungkol Sarin, Toshinori Nagahashi, Tadashi Miyosawa, Wataru Kameyama

Advances in Multimedia 2008 ( Article ID 592690 ) 16 2008

　View Summary

Automating the process of semantic annotation of digital personal photographs is a crucial step towards efficient and effective management of this increasingly high volume of content. However, this is still a highly challenging task for the research community. This paper proposes a novel solution. Our solution integrates all contextual information available to and from the users, such as their daily emails, schedules, chat archives, web browsing histories, documents, online news, Wikipedia data, and so forth. We then analyze this information and extract important semantic terms, using them as semantic keyword suggestions for their photos. Those keywords are in the form of named entities, such as names of people, organizations, locations, and date/time as well as high frequency terms. Experiments conducted with 10 subjects and a total of 313 photos proved that our proposed approach can significantly help users with the annotation process. We achieved a 33 gain in annotation time as compared to manual annotation. We also obtained very positive results in the accuracy rate of our suggested keywords.

DOI

Scopus

1

Citation

(Scopus)
Instructional-Designed Strategy for Massive Multiplayer Online M-learning

Mohd Firdaus Md Khalid, Wataru Kameyama

2008 IEEE INTERNATIONAL SYMPOSIUM ON IT IN MEDICINE AND EDUCATION, VOLS 1 AND 2, PROCEEDINGS 781 - 785 2008 [Refereed]

　View Summary

We have developed a prototype system of integrating immersive elements from Massive Multiplayer Online Game (MMOG) and systematic principles of Instructional Design Methodology (ID) into Mobile learning (M-learning), in order to counter M-learning's preceding problems of low motivational level towards learning and weak standards to deliver the learning environment. Experiments were conducted on the prototype system with students of Waseda University and Malaysian volunteers to produce notable results for further analysis. This paper reports on the instructional-designed strategies for the M-learning based on the test results of the dual-integration and educational standard specifications.

DOI

Scopus

2

Citation

(Scopus)
視線情報に基づく映像要約手法の検討

応和大輔, 亀山渉, 富永英義

情報処理学会, AVM研究会 2007-AVM-59 (18) 2007.12
Upcoming MPEG Standard and Contents Management Technology in the Broadband Era : Foreword

亀山渉

情報処理 48 ( 10 ) 1111 - 1112 2007.10

CiNii
博物館情報におけるメタデータスキーマ間の類似性に関する一考察

秋元良仁, 亀山渉

情報科学技術フォーラム FIT 2007 B-035 2007.09
Using MMOG to Promote Effective Instructional Design in Mobile Learning

Mohd Firdaus, Md Khalid, 亀山渉

情報科学技術フォーラム FIT 2007 F-043 2007.09
Semi-automatic Annotation of Personal Digital Photographs with W6H2 Metadata

Supheakmungkol Sarin, 長橋敏則, 三代沢正, 亀山渉

情報科学技術フォーラム FIT 2007 I-044 2007.09
A Proposal on SIP Based Navigation System for Hospital

Md. Humayun Kabir, 亀山渉

情報科学技術フォーラム FIT 2007 M-041 2007.09
権利継承を実現するコンテンツ・エディタにおける権利管理方式の提案

王元綱, 関亜紀子, 亀山渉

情報科学技術フォーラム FIT 2007 N-030 2007.09
On Content Distribution Model and Analyzing Distribution Effectiveness

Pao Sriprasertsuk, Akiko Seki, Wataru Kameyama

情報処理学会論文誌 Vol.48 ( No.8 ) 2878 - 2891 2007.08
Rule-Based Khmer Part-of-Speech Tagging with Generalized Unknown Word Handling

Chenda Nou, Wataru Kameyama

Proc of 18th Irish Conference on Artificial Intelligence and Cognitive Science, AICS 07 260 - 269 2007.08
博物館情報を用いたメタデータスキーマ統合機構の実装と評価

秋元良仁, 亀山渉

情報処理学, ディジタルドキュメント研究会 2007-DD-62(1) 2007.07
Transformation-Based Khmer Part of Speech Tagger

Chenda Nou, Wataru Kameyama

Proc. of The 2007 International Conference on Artificial Intelligence, ICAI'07 Vol.2 ( 7-ICAI ) 581 - 587 2007.06
コンテンツ循環における権利継承の自動化

関亜紀子, 亀山渉

情報処理学会論文誌 Vol.48 ( No.5 ) 1952 - 1964 2007.05
Maximizing Context with Desktop Search Integration for Semi-automatic Metadata Generation of Digital Photographs

S. Sarin, T. Nagahashi, T. Miyosawa, W. Kameyama

情報処理学会第69回全国大会 1D-7 2007.03
二次コンテンツ制作における権利継承を実現するコンテンツ・エディタの提案

王元綱, 関亜紀子, 亀山渉

情報処理学会第69会全国大会 5D-4 2007.03
A Proposal on Massive Multiplayer Online M-Learning to Improve M-Learning via MMOG Technology and Instructional Design

Mohd Firdaus, Md Khalid, 亀山渉

情報処理学会第69会全国大会 3H-1 2007.03
A Rule-Based Proper Noun Recognition for Khmer Part of Speech Tagger

Chenda Nou, 亀山渉

情報処理学会第69会全国大会 3Q-5 2007.03
映像特徴と主観評価の関連付による映像要約手法

倪嬋斌, 野村敏男, 渡部秀一, 岡田浩行, 亀山渉

情報処理学会 AVM研究会 2007-AVM-56 (3) 2007.03
権利者の要求に基づくDRM技術の選択手法に関する一考察

関亜紀子, 亀山渉

情報処理学会, 電子化知的財産・社会基盤研究会 2007-EIP-35 (3) ( 30 ) 17 - 22 2007.03

　View Summary

The recent innovation of telecommunication and networking technologies has been making the distribution, creation and use of digital contents easy and flexible for everyone. Therefore, the Digital Rights Management is becoming an important issue, and effective rights management should be achieved by utilizing DRM technologies appropriately. However, there is no criteria ever used for selecting and evaluating DRM technologies and DRM systems. In this paper, DRM processing in digital content distribution are analyzed based on the rights holder's requirements, and the selection methodology of DRM technologies is proposed.

CiNii
博物館情報に基づくメタデータスキーマ統合機構の構築

秋元良仁, 亀山渉

情報処理学会ディジタルドキュメント研究会 2007-DD-60 (2) 2007.03
Efficient Interaction Tool for M-learning Using MMOG Technology

Mohd Firdaus Bin, Md Khalid, 亀山渉

情報処理学会ディジタルドキュメント研究会 2007-DD-60 (10) 2007.03
Realization and Evaluation on Datacasting of Printable Data Linked with Broadcast Program in Japan

Tadashi Miyosawa, Koichi Miyasaka, Wataru Kameyama

Proc. of IEEE International Symposium on Broadband Multimedia Systems and Broadcasting 2007.03
中継サーバを設けたセキュアな遠隔支援システムの開発と展開

三代沢正, 厚井裕司, 岡崎直宣, 中谷直司, 亀山渉

情報処理学会論文誌 Vol.48 ( No.2 ) 743 - 754 2007.02

　View Summary

Recently broadband Internet such as ADSL and FTTH is getting popular, Many PC and home appliance becomes always connected to Internet not only in office environment but also in home environment. Remote access attracts attention as a technique for supporting such connected equipment like PC. However, when remote PC is connected to the Internet via a router which has function of Network Address Translator, remote access to such PC from the outside is difficult. We have developed the method that PC can be assisted by the remote assistant without security issues even if that PC is connected via a router. It was jointly developed and evaluated by several Universities and local companies who want to provide this kind of services such as Help Desk. In this paper, we propose remote access system, which is using "Relay Server" to relay client and assistant connection and encrypting data with SSL. In University, after several prototype implementation and experiments, "Remote Access Platform" was developed, and several local companies built their services based on this "Platform". Collaboration between academia and industry enables the practical implementation of remote access system using relay server.

CiNii
Khmer POS tagger: A transformation-based approach with hybrid unknown word handling

Chenda Nou, Wataru Kameyama

ICSC 2007: INTERNATIONAL CONFERENCE ON SEMANTIC COMPUTING, PROCEEDINGS 482 - + 2007 [Refereed]

　View Summary

This paper presents an initiative research on Khmer part-of-speech tagger. We propose some modifications on applying rule algorithm of the transformation-based approach to adapt to Khmer language which is morphologically and syntactically different from the English language. Furthermore, to overcome the limited coverage of the rule-based approach in handling unknown words, we propose a hybrid approach to combine the rule-based and trigram models. Although training on a very small corpus, both proposed approaches achieve higher accuracy than the conventional methods. The tagger achieves 95.27% on training data and 91.96% on test data which includes 9% of unknown words.

DOI

Scopus

5

Citation

(Scopus)
A proposal of Ontology-based health care information extraction system: VnHIES

Tran Quoc Dung, Wataru Kameyama

2007 IEEE International Conference on Research, Innovation and Vision for the Future, RIVF 2007 1 - 7 2007 [Refereed]

　View Summary

This paper presents an Ontology-based health care information extraction system - VnHIES. In the system, we develop and use two effective algorithms called "Semantic Elements Extracting Algorithm" and "New Semantic Elements Learning Algorithm" for health care semantic words extraction and ontology enhancement. The former algorithm will extract Concepts (Cs), Descriptions of concepts (Ds), Pairs of Concept and Description(C-D) and Names of diseases (Ns) in health care information domain from web pages. Those extracted semantic elements are used by latter algorithm that will render suggestions in which might contain new semantic elements for later use by domain users to enrich ontology. After extracting semantic elements, a "Document Weighting Algorithm" is applied to get summary information of document with respect to all extracted semantic words and then to be stored in knowledge base which contains ontology and database to be used later in other applications. Our experiment results show that the approach is very optimistic with high accuracy in semantic extracting and efficiency in ontology upgrade. VnHIES can be used in many health care information management systems such as medical document classification, health care information retrieval system. VnHIES is implemented in Vietnamese language. © 2007 IEEE.

DOI

Scopus

19

Citation

(Scopus)
Hybrid approach for Khmer unknown word POS guessing

Chenda Nou, Wataru Kameyama

IRI 2007: PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL CONFERENCE ON INFORMATION REUSE AND INTEGRATION 215 - + 2007 [Refereed]

　View Summary

New words are being created everyday and the lexicon is not large enough to cover all the words, unknown words become a serious problem in part-of-speech tagging. This paper presents a hybrid approach to handle the unknown word problem in Khmer part-of-speech tagging. The hybrid approach combined of rule-based model and trigram model makes use of both internal structure of the word and surrounding contextual information to predict the part-of-speech of unknown words. The proposed approach achieves 88.9% and 78.2% of accuracy on training and test data respectively.

DOI

Scopus

2

Citation

(Scopus)
Transformation-Based Khmer Part-of-Speech Tagger.

Chenda Nou, Wataru Kameyama

Proceedings of the 2007 International Conference on Artificial Intelligence, ICAI 2007, Volume II, June 25-28, 2007, Las Vegas, Nevada, USA 581 - 587 2007 [Refereed]
Ontology-based information extraction and information retrieval in health care domain

Tran Quoc Dung, Wataru Kameyama

DATA WAREHOUSING AND KNOWLEDGE DISCOVERY, PROCEEDINGS 4654 ( #325 ) 323 - + 2007 [Refereed]

　View Summary

Ontology-based information extraction is considered as an effective method to improve the performance of information extraction (IE) systems. In order to build a better IE system using ontology-based technique, the two challenges should be most taken into account are semantic elements extraction, and ontology enhancement. Focusing on the two key points above, we propose an ontology-based information extraction system and its application information retrieval system in the health care domain. In ontology-based information extraction system, we propose a non part-of-speech based method for the semantic elements extraction and the ontology enhancement to overcome the above challenges. Experiments and Results show that all functions work well in the whole system. Many kinds of semantic elements can be extracted by the proposed extraction functions regardless parts-of-speech of words. High ratio of new semantic elements is detected for the ontology and database enrichment that yield very good results in information retrieval. The system is implemented in Vietnamese.

DOI

Scopus

8

Citation

(Scopus)
二次コンテンツ制作における権利継承を実現するコンテンツ・エディタの基礎的検討

王元綱, 関亜紀子, 亀山渉

映像情報メディア学会放送技術研究会 BCT2007-25 2007.01
On automatic contextual metadata generation for personal digital photographs

Supheakmungkol Sarin, Toshinori Nagahashi, Tadashi Miyosawa, Wataru Kameyama

9TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY: TOWARD NETWORK INNOVATION BEYOND EVOLUTION, VOLS 1-3 66 - + 2007 [Refereed]

　View Summary

The advancements of technology have been making digital cameras more and more affordable for everyone. Consequently, digital photographs have grown exponentially this last decade and have been making it beyond the abilities of people to easily manage their own photo collections. Annotation is one of the solutions to solve this burden. Therefore, we propose a semi-automatic annotation engine with contextual metadata generation. Photos with geo-referential information such as Global Positioning System (GPS) are the current tendency. Using the exact location information given by GPS, together with time-stamps, our novel engine semi-automatically generates contextual metadata for each photo from different sources of information namely the public news and users' personal information. We have designed, implemented and tested our system.

DOI

Scopus

6

Citation

(Scopus)
A proposal of Ontology-based health care information extraction system: VnHIES

Tran Quoc Dung, Wataru Kameyama

2007 IEEE International Conference on Research, Innovation and Vision for the Future, RIVF 2007 Proc. IEEE RIVF 2007 1 - 7 2007

　View Summary

This paper presents an Ontology-based health care information extraction system - VnHIES. In the system, we develop and use two effective algorithms called "Semantic Elements Extracting Algorithm" and "New Semantic Elements Learning Algorithm" for health care semantic words extraction and ontology enhancement. The former algorithm will extract Concepts (Cs), Descriptions of concepts (Ds), Pairs of Concept and Description(C-D) and Names of diseases (Ns) in health care information domain from web pages. Those extracted semantic elements are used by latter algorithm that will render suggestions in which might contain new semantic elements for later use by domain users to enrich ontology. After extracting semantic elements, a "Document Weighting Algorithm" is applied to get summary information of document with respect to all extracted semantic words and then to be stored in knowledge base which contains ontology and database to be used later in other applications. Our experiment results show that the approach is very optimistic with high accuracy in semantic extracting and efficiency in ontology upgrade. VnHIES can be used in many health care information management systems such as medical document classification, health care information retrieval system. VnHIES is implemented in Vietnamese language. © 2007 IEEE.

DOI

Scopus

19

Citation

(Scopus)
Exploiting users' personal and public information for personal photo annotation

Supheakmungkol Sarin, Toshinori Nagahashi, Tadashi Miyosawa, Wataru Kameyama

2007 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, VOLS 1-5 T-P8.5 564 - + 2007 [Refereed]

　View Summary

Annotation is the core item to enable efficient access to media. Thus, automatic annotation is a highly challenging problem. We present a novel solution to personal digital photograph annotation problem which annotates photo based on users' personal, and public information. We use timestamps of photo together with exact location name as pivots to search for more contextual metadata from users' emails, schedules, web browsing histories and public information repositories such as online encyclopedia and news websites. A notable contribution of our approach is that it can effectively leverage the background information of users' daily activities and their ambient environment to semi-automatically annotate their photographs. Experimental results conducted with 10 subjects and a total of 313 photos show that we can reduce 33% of annotation time over manual annotation and we also obtain very encouraging accuracy results.
電子写真のメタデータを半自動生成するフォトアルバムシステムとその評価

三代沢正, 長橋敏則, Supheakmungkol SARIN, 亀山渉

映像情報メディア学会 2006年冬期大会 39996 2006.12
Part-of-Speech Tagging for Khmer

Chenda Nou, Wataru Kameyama

Proceedings of the 9th Socio-Cultural Research Congress on Cambodia 2006.11
Language Design of Creating Compound Metadata Schema Method "Fuzzy Schema" Base on Museum Information

Ryoji Akimoto, Wataru Kameyama

The 5th WSEAS International Conference on E-ACTIVITIES, WSEAS Transactions on System Issue 3 ( Volume 6 ) 604 - 609 2006.11

CiNii
博物館情報を用いた複合的メタデータスキーマ構築手法「ファジー・スキーマ」の言語設計

秋元良仁, 亀山渉

情処学会ディジタルドキュメント研究会 2006-DD-58 25 - 27 2006.11
博物館情報に基づく複合的メタデータスキーマ構築のための言語設計に関する検討

秋元良仁, 亀山渉

じんもんこん2006 PA-7 2006.11
Special section on mobile multimedia communications

Wataru Kameyama

IEICE TRANSACTIONS ON COMMUNICATIONS E89B ( 10 ) 2669 - 2669 2006.10 [Refereed]

DOI

Scopus
博物館情報を用いた複合的メタデータスキーマの実現手法に関する検討

秋元良仁, 亀山渉

情報科学技術フォーラム FIT 2006 B-026 2006.09
SemiANNOTATE: A Semi-automatic Approach to Personal Photo Album Annotation Based on Public/Personal Information

Supheakmungkol SARIN, 長橋敏則, 三代沢正, 亀山渉

情報科学技術フォーラム FIT 2006 J-056 2006.09
コンテンツ循環における権利継承システムの実装と評価

関亜紀子, 亀山渉

情報科学技術フォーラム FIT 2006 N-015 2006.09
Model and Consideration on Advertisement Distribution

Pao Sriprasertsuk, Akiko Seki, Wataru Kameyama

情報科学技術フォーラム FIT 2006 N-016 2006.09
博物館情報を用いた複合的メタデータスキーマ作成に関する一考察

秋元良仁, 亀山渉

情処学会デジタル・ドキュメント研究会 2006-DD-56 59 - 66 2006.07
電子写真のメタデータを半自動生成するフォトアルバムシステム

三代沢正, 長橋敏則, Supheakmungkol SARIN, 亀山渉

映像情報メディア学会メディア工学研究会 2006.07
コンテンツ流通社会からコンテンツ循環社会に向けて

関亜紀子, 亀山渉

第2回デジタルコンテンツシンポジウム 39995 2006.06
コンテンツ循環における権利継承記述言語

関亜紀子, 亀山渉

情処学会電子化知的財産・社会基盤研究会 2006-EIP-32 7 - 14 2006.06
DHTを用いたモバイルアドホックネットワークにおける情報発見手法

金玲, 亀山渉

信学技報 MoMuC 2005-84 2006.03
映像の種類に依存しない映像要約手法に関する検討

倪嬋斌, 野村敏男, 渡部秀一, 亀山渉

情報処理学会第68会全国大会 3C-5 2006.03
コンテンツ循環における権利継承処理の実現手法に関する検討

関亜紀子, 亀山渉

情報処理学会第68会全国大会 6D-2 2006.03
柔軟な知識管理体系に基づくコンテンツ管理技術に関する基礎的検討

秋元良仁, 亀山渉

情報処理学会第68会全国大会 6D-3 2006.03
A Personal Photo Album with Semi-automatic Metadata Generation

Supheakmungkol SARIN, 長橋敏則, 三代沢正, 亀山渉

情報処理学会第68会全国大会 7D-6 2006.03
モバイルアドホックネットワークにおける情報検索のためのノードのトポロジを考慮したオーバーレイルーティング方式に関する検討

金玲, 亀山渉

信学総全大 B-15-15 2006.03
通信と放送融合を探る上

亀山渉

日本経済新聞, 経済教室欄記事, 2006年2月8日 2006.02
A Uniform Resource Name (URN) Namespace for the TV-Anytime Forum

Wataru Kameyama

RFC 4195 RFC 4195 2005.10
ディジタルコンテンツ流通に向けた批評メタデータの自動生成と流通システムの実装と評価

大勝琢巳, 亀山渉

情報科学技術フォーラム FIT 2005 J-021 2005.09
コンテンツ循環における権利継承管理方式の提案

関亜紀子, 亀山渉

情報科学技術フォーラム FIT 2005 N-031 2005.09
On Advertisement Distribution Model and Its Analysis Method

Pao Sriprasertsuk, Akiko Seki, Wataru Kameyama, Nobuyuki Kinoshita, Tatsuo Inoue, Nakanishi Yasuhiro

情報科学技術フォーラム FIT 2005 N-030 2005.09
コンテンツ循環における協調・共生・共存を考える

関亜紀子, 亀山渉

情処学会電子化知的財産・社会基盤研究会社会情報学フェア2005特別シンポジウム論文集 21 - 26 2005.09
On an Information Circulation Analysis

Pao Sriprasertsuk, Akiko Seki, Wataru Kameyama, Nobuyuki Kinoshita, Tatsuo Inoue, Yasuhiro Nakanishi

情処学会電子化知的財産・社会基盤研究会社会情報学フェア2005特別シンポジウム論文集 40 2005.09
ディジタルコンテンツ流通に向けたメタデータ自動生成と流通システムの検討

大勝琢巳, 亀山渉

情処学会 AVM 49-12 2005.07
コンテンツ循環における権利継承処理を実現する権利記述方式の基礎的検討

関亜紀子, 亀山渉

情処学会電子化知的財産・社会基盤研究会 2005-EIP-28 25 - 32 2005.06
コンテンツ循環におけるDRMの基礎的検討

関亜紀子, 亀山渉

第1回デジタルコンテンツシンポジウム 39814 2005.05
The TV-Anytime Content Reference Identifier (CRID)

N. Earnshaw, S. Aoki, A. Ashley, W. Kameyama

RFC 4078 RFC 4078 2005.05
コンテンツ市場の拡大に向けて放送のデジタル化とブロードバンドへの進展

亀山渉

iNTERNET magagine, インプレス 2005年5月号 ( No.124 ) 51 - 55 2005.04
番組視聴制御方式におけるプロトタイプの評価と語彙拡張の検討

細野一樹, 関亜紀子, 土居清之, 浦野丈治, 宮林聡, 亀山渉

情報処理学会第67回全国大会 0.01 2005.03
視聴者入力情報からの時系列キーワード抽出システムの試作

大黒泰平, 加藤友規, 土居清之, 亀山渉

情報処理学会第67回全国大会 0.001 2005.03
Blogを利用したメタデータ流通に関する考察

大勝琢巳, 亀山渉

情報処理学会第67回全国大会 2U-6 2005.03
コンテンツ循環における権利管理の基礎的検討

関亜紀子, 亀山渉

情報処理学会第67回全国大会 0.3 2005.03
A Proposal on an Advertisement Model and Next Generation of Advertisement Distribution

Pao Sriprasertsuk, 関亜紀子, 亀山渉, 木下信幸, 井上竜生, 中西康浩

情報処理学会第67回全国大会 6K-6 2005.03
番組視聴の自由度を提供する視聴制御方式の実装と評価

細野一樹, 関亜紀子, 土居清之, 浦野丈治, 宮林聡, 亀山渉

映像情報メディア学会, 放送技術研究会 2005.03

DOI

Scopus
インターネットチャットを利用した番組メタデータの自動抽出システムの実装と評価

大黒泰平, 石島健一郎, 加藤友規, 土居清之, 亀山渉

情報処理学会AVM研究会 48-13 2005.03
A Propasal on Advertisment Distribution Model and Discussion on Its Experiment

Pao Sriprasertsuk, Akiko Seki, Wataru Kameyama, Nobuyuki Kinoshita, Tatsuo Inoue, Yasuhiro Nakanishi

情処学会電子化知的財産・社会基盤研究会 2005-EIP-27 2005.03
無線アドホックネットワークにおけるリアクティブ・ルーティング・プロトコルの動的選択に関する検討

村山麻衣, 亀山渉

信学総全大 B-21-41 2005.03
1セグ放送/サーバ型放送

亀山渉

iNTERNET magagine, インプレス 2005年3月号 ( No.122 ) 50 - 51 2005.02
A Uniform Resource Name (URN) Namespace for the TV-Anytime Forum.

Wataru Kameyama

RFC 4195 1 - 6 2005 [Refereed]

DOI
The TV-Anytime Content Reference Identifier (CRID).

Nigel Earnshaw, Shigeru Aoki, Alex Ashley, Wataru Kameyama

RFC 4078 1 - 10 2005 [Refereed]

DOI
番組視聴の自由度を提供する視聴制御方式

関亜紀子, 細野一樹, 土居清之, 浦野丈治, 宮林聡, 亀山渉

映像情報メディア学会誌 Vol.59 ( No.1 ) 102 - 110 2005.01

DOI

Scopus
ユビキタスとコンテンツ/映像情報処理

亀山渉

映像情報メディア学会誌 Vol.59 ( No.1 ) 21 - 26 2005.01

DOI

Scopus

1

Citation

(Scopus)
Talk-back and talk-together TV -service concept and possibility of user acceptance

Amy Tzu Ya Huang, Sakae Okubo, Wataru Kameyama

Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers 59 ( 4 ) 629 - 637 2005

　View Summary

Rapidly emerging IP-based broadband technologies allow multimedia communications between viewers and TV broadcasting stations as well as among viewers. Talk-back and Talk-together TV systems provide new forms of interactive broadcasting services and enhance the current experiences of TV viewing. We first defined Talk-back and Talk-together TV systems and then analyzed their possible service scenarios for extracting required system functionalities. Furthermore, we carried out a Talk-together TV system experimental study that examined user reactions to the Talk-together TV sessions on quiz and soccer programs by connecting the subject viewers with different communication media
none, text-only, audio, audiovisual, physically together. The results indicate that there are future possibilities of user acceptance for the new TV services that utilize bidirectional multimedia links among viewers.

DOI

Scopus
コンテンツ循環におけるDRMと研究課題

関亜紀子, 亀山渉

情処学会電子化知的財産・社会基盤研究会 2004-EIP-26 2004.12
Some Considerations on Proposed Advertisement Model and Advertisement Distribution

Pao Sriprasertsuk, 関亜紀子, 亀山渉, 木下信幸, 井上竜生, 中西康浩

情処学会電子化知的財産・社会基盤研究会 2004-EIP-26 2004.12
視聴者入力情報からの時系列キーワード抽出の改善に関する検討

大黒泰平, 加藤友規, 土居清之, 亀山渉

情報科学技術フォーラム 2004 D-035 2004.09
番組視聴制御方式における番組代替方式の検討

関亜紀子, 細野一樹, 亀山渉, 宮林聡, 浦野丈治, 土居清之

情報科学技術フォーラム 2004 J-063 2004.09
番組視聴制御方式における制御語彙の検討とプロトタイプの評価

細野一樹, 関亜紀子, 土居清之, 浦野丈治, 宮林聡, 亀山渉

情報科学技術フォーラム 2004 J-064 2004.09
リアクティブ・ルーティング・プロトコルの動的選択による無線アドホックネットワークの通信効率化に関する検討

村山麻衣, 亀山渉

電子情報通信学会2004年ソサイエティ大会 B-19-5 2004.09
番組に対する視聴者入力情報からの時系列キーワード抽出の効率化に関する検討

大黒泰平, 加藤友規, 土居清之, 亀山渉

映像情報メディア学会2004年度年次大会 39866 2004.08
メタデータを利用したコンテンツ視聴制御方式に関する検討

細野一樹, 関亜紀子, 土居清之, 浦野丈治, 宮林聡, 亀山渉

映像情報メディア学会2004年度年次大会 39894 2004.08
コンテンツ流通ビジネスモデルのモデル化と評価に関する検討

関亜紀子, 亀山渉

情処学会電子化知的財産・社会基盤研究会 2004-EIP-23 23 - 30 2004.03
コンテンツ流通とライセンス管理体系に関する一考察

関亜紀子, 亀山渉

情報処理学会第66回全国大会 0.0001 2004.03
フラグメントメタデータ流通におけるフラグメント発見とフラグメント更新手法に関する研究

渡辺雅義, 亀山渉

情報処理学会第66回全国大会 1V-3 2004.03
番組コンテンツに対するユーザ入力情報からの時系列キーワード抽出に関する一考察

大黒泰平, 加藤友規, 土居清之, 亀山渉

情報処理学会第66回全国大会 4U-6 2004.03
権利情報メタデータを利用したコンテンツ視聴制御手法についての提案

細野一樹, 関亜紀子, 土居清之, 浦野丈治, 亀山渉

情報処理学会第66回全国大会 5U-9 2004.03
ブロードキャストを利用したモバイルアドホックネットワークにおける情報交換に関する検討

金玲, 亀山渉

信学総全大 B-15-23 2004.03
時系列の重みと相関関係を利用した効率的なコンテンツ検索手法の実装と評価

野々村高樹, 亀山渉

信学総全大 D-4-6 2004.03
映像特徴量に基づく同系映像の自動分類に関する研究

服部しのぶ, 亀山渉, 富永英義

信学総全大 D-12-6 2004.03
Subjective evaluation of experimental Talk-together TV systems

Amy Huang, Sakae Okubo, Wataru Kameyama

映像情報メディア学会放送方式研究会 2004.03
TV-Anytimeフォーラムの技術動向

亀山渉

映像情報メディア学会誌 Vol.58 ( No.3 ) 306 - 312 2004.03

DOI

Scopus
A Proposal on Open DRM System Coping with Both Benefits of Rights-Holders and Users

Akiko Seki, Wataru Kameyama

IEEE GLOBECOM 2003 GC20-8 2003.12
映像特徴空間に基づく同系映像の分類

服部しのぶ, 亀山渉, 富永英義

情報処理学会 AVM研究会 43-27 2003.12
権利条件の再編成と派生関係保存を可能にする分散型権利流通処理方式の検討

関亜紀子, 亀山渉

情処学会電子化知的財産・社会基盤研究会 2003-EIP-21, pp.33-38 2003.11
オーディオビジュアルコンテンツのためのメタデータ国際標準

亀山渉

情報知識学会誌 Vol.13, Nov.4, pp.24-31 2003.10
メタデータ流通を促進するフラグメントメタデータ交換システム

鈴木順一, 亀山渉

情報科学技術フォーラム 2003 D-029 2003.09
メタデータの相関関係と重み付けを利用した効率的なコンテンツ検索手法の提案

野々村高樹, 亀山渉

情報科学技術フォーラム 2003 D-030 2003.09
大規模コンテンツ配信のためのアプリケーションレベル・マルチキャストツリー構築に関する検討

清水直人, 亀山渉, 渡辺裕

情報科学技術フォーラム 2003 L-011 2003.09
モバイル環境におけるユーザの嗜好と位置を利用した情報推薦システムの検討

金田瑞規, 亀山渉, 渡辺裕

情報科学技術フォーラム 2003 M-092 2003.09
コンテンツ流通における認証機関を介さない権利譲渡方式の実現方法

諸井太郎, 亀山渉

情報科学技術フォーラム 2003 N-017 2003.09
円滑な権利運用と管理に向けた権利情報記述方式の提案

関亜紀子, 亀山渉

情報科学技術フォーラム 2003 N-018 2003.09
Webサービスを用いたオープンソース利用者支援環境の実装と評価

張珍良, 亀山渉

情報科学技術フォーラム 2003 O-032 2003.09
視聴者体験共有テレビ放送のサービスシナリオ例

黄資雅, 大久保榮, 亀山渉

2003年映像情報メディア学会年次大会 39980 2003.08
TV-Anytime Forumにおける国際標準化の最新動向

亀山渉

2003年映像情報メディア学会年次大会 S2-5 2003.08
A Novel Content Distribution Architecture Utilizing Network Distance Prediction

Naoto Shimizu, Wataru Kameyama, Hiroshi Watanabe

World Multiconference on Systemics, Cybernetics and Informatics (SCI) 2003 2003.07
ホストの相対的位置情報を利用したコンテンツ配信に関する検討

清水直人, 亀山渉, 渡辺裕

信学総全大 B-6-170 2003.03
IPネットワークにおけるメタデータ交換サービスの実装と評価

鈴木順一, 亀山渉

情報処理学会 AVM研究会 14916 2003.03
柔軟なコンテンツ流通のためのシステム要件と研究課題

関亜紀子, 亀山渉

情報処理学会第83回情報システムと社会環境研究会 2003.03
モバイルアドホックネットワークにおける情報発見・交換のための交換メタデータ構造と伝送方法に関する検討

金玲, 亀山渉

信学総全大 B-15-15 2003.03
モバイル環境における行動履歴を利用した情報配信システムの実装と評価

吉沢進, 亀山渉

信学総全大 B-15-19 2003.03
コンテンツ選択支援のためのユーザプリファレンスメタデータの自動生成と評価

喜田洋二, 亀山渉

信学総全大 D-4-4 2003.03
Webサービスを用いたオープンソース利用者支援環境の提案

張珍良, 亀山渉

信学総全大 D-9-19 2003.03
KL展開とニューラルネットを用いた顔印象の解析と評価

養老龍雄, 亀山渉

信学総全大 D-12-56 2003.03
フラグメントメタデータを利用したメタデータ交換モデルとメタデータ流通方式の提案

鈴木順一, 亀山渉

情報処理学会第65回全国大会 1R-3 2003.03
マスメディアにおけるコンテンツの個別化を実現するパーソナライズド・ブロードキャストの実現と評価

福田賢治, 亀山渉

情報処理学会第65回全国大会 1R-4 2003.03
コンテンツ流通システムにおける使用記録の保護と認証機関を介さない権利譲渡方式の提案

諸井太郎, 亀山渉

情報処理学会第65回全国大会 5X-6 2003.03
コンテンツ流通における開放型権利処理方式の実現手法

関亜紀子, 亀山渉

情報処理学会第65回全国大会 5X-7 2003.03
Some considerations on Talk-back TV and Talk-together TV systems

Amy Huang, Sakae Okubo, Wataru Kameyama

映像情報メディア学会放送方式研究会 2003.03
コンテンツ流通における開放型権利処理方式の実現と評価

関亜紀子, 亀山渉

情報処理学会第19回電子化知的財産・社会基盤研究会 2003.02
A proposal on open DRM system coping with both benefits of rights-holders and users

A Seki, W Kameyama

GLOBECOM'03: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-7 4111 - 4115 2003 [Refereed]

　View Summary

This paper proposes a rights management processing system which is independent from any usage environments and enables flexibility, re-using, and redistribution of contents with the rightful consent between right-holders and users. An implementation is also shown to evaluate both the secureness and flexibility of the proposed system, as well as the comparison with other existing systems.

DOI
A proposal on flexible metadata exchange model based on metadata fragmentation

J Suzuki, W Kameyama

7TH WORLD MULTICONFERENCE ON SYSTEMICS, CYBERNETICS AND INFORMATICS, VOL VI, PROCEEDINGS Proc. Vol. VI 260 - 265 2003

　View Summary

In this paper, we propose a flexible metadata exchange model based on metadata fragmentation. In this model, a complete set of metadata is divided into several fragments, and each fragment can be distributed and circulated. over networks individually. The reconstruction of the original metadata is easy using some link information included in them. This model provides much more flexible metadata circulation, and allows the word-of-mouth style metadata flow among users. This model is designed as an enhancement of the metadata delivery standard specified by TV-Anytime Forum, in order to promote much more metadata. flow which would yield much more contents flow eventually.
An Implementation of Metadata Exchange Services for Audio-visual Contents Using Web Services

Pao Sriprasertsuk, Wataru Kameyama, Masahito Kawamori

情報処理学会AVM研究会 39-20 2002.12
携帯端末における3次元地理情報提示に関する基礎検討

金田瑞規, 吉沢進, 亀山渉, 渡辺裕

PCSJ 2002 I-2.11 2002.11
A novel decoder downloadable system for content-oriented coding

N. Shimizu, T. Miyazawa, W. Kameyama, H. Watanabe, H. Tominaga

IEEE Globecom 2002 GEN-01-1 2002.11
メタデータを用いたモバイルアドホックネットワークにおける情報発見・交換手法に関する検討

金玲, 亀山渉

情報処理学会AVM研究会 38-17 2002.11
ノード利用可能度を用いたOne Hop on Demand Ad-hoc Routing

土橋健太郎, 亀山渉, 富永英義

情報処理学会AVM研究会 38-25 2002.11
オープンソースの利用者のための支援環境に関する研究

張珍良, 亀山渉

情報処理学会, 第41回プログラミング研究会 2002.10
散協調作業環境におけるWebDAVを用いた分散的バージョン管理手法の提案

竹山純平, 亀山渉

第63回情報処理学会全国大会 2X-05 2002.09
メタデータ流通を実現するメタデータ共有方式

森聡一郎, 亀山渉

情報科学技術フォーラム 2002 D-33 2002.09
マスメディアにおけるコンテンツの個別化 —パーソナライズド・ブロードキャストの提案と実現手法—

福田賢治, 亀山渉

情報科学技術フォーラム 2002 J-50 2002.09
KL展開とニューラルネットワークを用いた顔印象の解析に関する一検討

養老龍雄, 亀山渉

情報科学技術フォーラム 2002 K-13 2002.09
モバイル環境における行動履歴を利用した情報配信と情報フィルタリング手法

吉沢進, 亀山渉

情報科学技術フォーラム 2002 M-73 2002.09
コンテンツ流通における開放型著作権管理方式の提案

関亜紀子, 亀山渉

情報科学技術フォーラム 2002 N-20 2002.09
An Adaptive Metadata Filtering Method for Audio-visual Contents Search and Retrieval using User's Viewing History

Pao Sriprasertsuk, Wataru Kameyama

情報科学技術フォーラム 2002 D-21 2002.09
The Geographic Routing by Adaptive Packets Exchanging for Multi-Hop Wireless Ad-hoc Networks

K. Dobashi, W. Kameyama, H. Tominaga

Asian-Pacific Conference on Communications 2002 Proc. of APCC 2002 254 - 257 2002.09
番組メタデータとユーザプリファレンス情報を利用したパーソナルチャネルシステム

潮総一郎

映像情報メディア学会2002年年次大会 39819 2002.08
マルチメディア・コンテンツ流通における著作権情報管理方式の提案

関亜紀子, 亀山渉

2002画像電子学会年次大会一般セッション 1 2002.06

DOI
モバイルアドホックネットワークにおける情報発見・交換のためのメタデータ定義と交換方法に関する検討

金玲, 亀山渉

2002画像電子学会年次大会一般セッション 6 2002.06

DOI
マスメディアにおけるコンテンツ・プレゼンテーションの個別化に関する研究

福田賢治, 亀山渉

2002画像電子学会年次大会一般セッション 13 2002.06

DOI
コンテントオリエンティッド符号化実現の為のシステム提案

清水直人, 宮沢敏記, 亀山渉, 渡辺裕, 富永英義

2002画像電子学会年次大会一般セッション 14 2002.06

DOI
Dynamic Programmingによるセル画アニメーション内均等色領域輪郭線符号化の検討

宮沢敏記, 中神央二, 亀山渉, 渡辺裕, 富永英義

情報処理学会 AVM研究会 13485 71 - 76 2002.03
ディジタル放送における番組情報提示に関する一提案

柿原正見

情報処理学会第64回全国大会 6V-03 2002.03
効率的な情報検索を行うためのメタデータ交換及び共有方式の提案

森聡一郎, 亀山渉

情報処理学会第64回全国大会 4X-03 2002.03
ユーザ情報のフィードバックを利用したオーディオビジュアルコンテンツ検索方式の提案

Pao Sriprasertsuk, 亀山渉

情報処理学会第64回全国大会 5ZA-03 2002.03
WebDAVを拡張した分散的バージョン管理手法に基づく協調作業システム

竹山純平, 亀山渉

情報処理学会デジタル・ドキュメント研究会 11720 2002.03
RTP/RTCPを用いたネットワーク適応型リアルタイム映像伝送制御

渡辺亮裕, 亀山渉

電子情報通信学会総合全国大会 B-7-96 2002.03
番組メタデータ及びユーザープリファレンス情報を利用したパーソナルチャンネル実現に関する検討

潮総一郎, Loys Belleguie, 亀山渉

電子情報通信学会総合全国大会 B-8-20 2002.03
デコーダダウンローダブルシステムにおけるフレキシブルデコーダ構成

清水直人, 宮沢敏記, 亀山渉, 渡辺裕, 富永英義

電子情報通信学会総合全国大会 D-11-119 2002.03
デコーダダウンローダブルシステムにおけるスケジューリング方式の検討

宮沢敏記, 清水直人, 亀山渉, 渡辺裕, 富永英義

電子情報通信学会総合全国大会 D-11-120 2002.03
モバイル環境における利用者情報の自動収集と連動した地理情報システムに関する検討

吉沢進, 亀山渉

電子情報通信学会総合全国大会 D-4-3 2002.03
分散的バージョン管理手法に基づく協調作業システム

竹山純平, 亀山渉

電子情報通信学会総合全国大会 D-9-3 2002.03
An Innovative Solution for Achieving Media Convergence Using RTP Streaming in ARIB Framework

Loys Belleguie, Wataru Kameyama

映像情報メディア学会誌 Vol. 56 ( No.2 ) 218 - 225 2002.02

　View Summary

Recently, media convergence and interoperability over multiple networks are becoming a determining factor for the success of new digital broadcasting and telecommunication services. In this paper, we present an original architecture framework providing a mean for seamless transport of RTP based streaming over both Internet and ISDB (ARIB) networks. This goal is achieved by using the independence of the RTP protocol from the transport layer, and by remarking that MPEG-2 Systems based ISDB provides a high-quality packet delivery scheme with the DSM-CC protocol. We propose to carry RTP/RTCP packets in DSM-CC messages, whereas an RTSP messages subset is being mapped onto ARIB DSM-CC event messages. The complete architecture is evaluated using a PC based simulator including a BML browser and a transport stream demultiplexer card.

DOI CiNii

Scopus
A novel decoder-downloadable system for content-oriented coding

N Shimizu, T Miyazawa, W Kameyama, H Watanabe, H Tominaga

GLOBECOM'02: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-3, CONFERENCE RECORDS 1638 - 1642 2002 [Refereed]

　View Summary

In this paper, a new system architecture called decoder-downloadable system is described. The purpose of this system is to provide a uniform platform for the multimedia world based on image compressions using characteristics of the contents. This system enables dynamic decoder downloading by negotiation between servers and clients for seamless and minimum delay playback. This negotiation scheme is implemented by Java and CORBA (Common Object Request Broker). Thus, servers and clients in this system are independent from OSes and hardware specifications. This system is suitable for TV broadcasting as well as Internet streaming.
We improve a decoder architecture in order to make the system more flexible. A decoder has some functions such as bitstream parsing, image compression algorithms (DCT, Wavelet, Motion estimation and so on). However, conventional decoders are monolithic software. Thus, it is impossible to share parts of decoders. The proposed method enables a module-based decoder and sharing some modules among some decoders. Consequently, the flexible decoder can make downloading time shorter by avoidance to download redundant parts of decoders. It also achieves scalabillity enabling this system to be used in some multimedia applications, such as a multimedia content search system, as well as a multimedia player.

DOI
A study on content-oriented coding scheme and decoder downloadable system

O Nakagami, N Shimizu, T Miyazawa, W Kameyama, H Watanabe, H Tominaga

6TH WORLD MULTICONFERENCE ON SYSTEMICS, CYBERNETICS AND INFORMATICS, VOL III, PROCEEDINGS Proc. Vol. III 111 - 116 2002
削減符号量による歪み増加特性を考慮したMPEG-2ビデオトランスコーダ再量子化符号量制御方式に関する基礎検討

永吉功, 笠井裕之, 花村剛, 亀山渉, 富永英義

映像情報メディア学会誌 Vol. 55 ( No.12 ) 1669 - 1674 2001.12

DOI CiNii
Pull型サービスにおけるデコーダダウンローダブルシステムの構成及び評価

宮沢敏記, 清水直人, 亀山渉, 渡辺裕, 富永英義

PCSJ 2001 P-2.06 27 - 28 2001.11
MPEG-2マルチプログラムトランスポートストリームトランスコーダのための動画像符号量制御方式

笠井裕之, 杉浦麻貴, 花村剛, 亀山渉, 富永英義

電子情報通信学会論文誌 B Vol.J84-B ( No.10 ) 1877 - 1889 2001.10

CiNii
RTP/RTCPを用いたネットワーク適応型映像伝送方式の基礎検討

渡辺亮裕, 亀山渉

電子情報通信学会2001ソサイェティ大会 B-7-87 2001.09
ネットワークを用いた立体映像の教育利用

柴田隆, 河合隆史, 亀山渉, 浦野義頼, 尾藤峰夫, 小倉裕司, 佐々木信幸, 西塔隆二, 石田亨, 木寺秀洋

日本人間工学会誌第37巻特別号 422 - 423 2001.09

DOI
e-Learningを成功に導くKey Issues

亀山渉

教育システム情報学会第26回全国大会 P2-3 21 - 24 2001.08
Interactive DTV Framework Spread over Broadcast and Communication Networks

L. Belleguie, Wataru Kameyama

2001 IEEE International Conference on Multimedia and Expo Proceeding 984 - 987 2001.08

DOI

Scopus
Animation Image Coding

Toshinori Miyazawa, Wataru Kameyama, Hiroshi Watanabe, Toru Sakatani, Hideyoshi Tominaga

World Multiconference on Systemics, Cybernetics and Informatics 2001 Proc. Vol. XIII 404 - 409 2001.07
アニメーション画像符号化における輪郭線抽出と近似方式の検討

宮沢敏記, 亀山渉, 渡辺裕, 阪谷徹, 富永英義

情報処理学会 AVM研究会 2001.03
ギガビットネットワークを用いた地域連携のモデル実験

西塔隆二, 佐々木信幸, 佐藤正和, 亀山渉, 浦野義頼

電子情報通信学会総合全国大会 B-7-32 2001.03
アニメーション画像符号化の基礎検討

宮沢敏記, 亀山渉, 渡辺裕, 阪谷徹, 富永英義

電子情報通信学会総合全国大会 D-11-66 2001.03
構成ピクチャ符号化特性を考慮したMPEG-2マルチプログラムTSビデオレート制御方式の検討

杉浦麻貴, 花村剛, 永吉功, 亀山渉, 富永英義

電子情報通信学会総合全国大会 B-8-23 2001.03
Interactive DTV framework spread over broadcast and communication networks

L. Belleguie, W. Kameyama

Proceedings - IEEE International Conference on Multimedia and Expo 777 - 780 2001 [Refereed]

　View Summary

Interactive Digital Television (DTV) broadcasting is catching popularity while broadband Internet and wireless communication networks are being made available at lower prices. The former is characterised by a guaranteed quality of delivery but a limited and expensive overall bandwidth, whereas the latter offers, in principle, a much higher backbone bandwidth, but suffers from a bad Quality of Service (QoS). 3G mobile networks lie in between as far as QoS or speed is concerned. In order to be successful, new interactive multimedia programmes will have to target all delivery channels. There is then a need for transmitting these programmes alternatively on multiple media to ensure ubiquity and optimise the data delivery based on content requirement. This paper presents a framework for an interactive DTV system implemented on top of current DTV and Internet technologies, which allows an optimal use of the combined broadcast + Internet path bandwidth. We design a "smart" media server that relies on the content type (data or streaming), the service class and available bandwidth to determine the type of content to be sent over the broadcast or the Internet path. We address also the middleware architecture at the client side as well as the multimedia encoding language issue.

DOI

Scopus
MPEG-2マルチプログラムTSトランスコーダのためのビデオレート制御方式の検討

杉浦麻貴, 笠井裕之, 花村剛, 永吉功, 亀山渉, 富永英義

PCSJ 2000 P-P1.05 39 - 40 2000.11
ギガビットネットワークを用いた地域連携のモデル実験

西塔隆二, 佐々木信幸, 佐藤正和, 亀山渉, 浦野義頼

電子情報通信学会技術報告書 IN 2000-114, MVE 2000-84 2000.11
マルチメディア技術

亀山渉

画像電子学会誌 Vol.29 ( No.6 ) 689 - 693 2000.11
Stereoscopic 3-D Images and Open Learning

T. Kawai, T. Shibata, K. Noro, M. Bitoh, W. Kameyama, Y. Urano, Y. Ogura, N. Sasaki, A. Ishida, H. Kidera

The 6th International Conference on Virtual Systems and Multimedia (VSMM2000) Proceedings of the conference 2000.10
JavaによるBML Browserの実装に関する検討

亀山, 尾崎, 目々澤

映像情報メディア学会 2000年年次大会 39878 2000.08
Java版BMLブラウザ描画部高速化に関する検討

宮沢, 亀山, 富永

情報処理学会 AVM研究会 39900 2000.03
BML Browserの構成方法と実装に関する検討

亀山, 尾崎, 目々澤

電子情報通信学会総合全国大会 B-8-57 2000.03
Javaにおける高速描画手法に関する一検討

宮沢, 亀山, 富永

電子情報通信学会総合全国大会 D-11-109 2000.03
ドリフト誤差伝搬を考慮したMPEGビットストリームレートスケーリング符号量制御方式

笠井裕之, 永吉功, 亀山渉, 富永英義

電子情報通信学会論文誌 D-II Vol. J83-D-II ( No.2 ) 509 - 524 2000.02
低遅延MPEG-2ビデオトランスコーダ符号量制御方式

笠井裕之, 花村剛, 亀山渉, 富永英義

電子情報通信学会論文誌 B Vol. J83-B ( No.2 ) 151 - 164 2000.02
Rate control scheme for low-delay MPEG-2 video transcoder

H Kasai, M Sugiura, T Hanamura, W Kameyama, H Tominaga

VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2000, PTS 1-3 4067 473 - 484 2000 [Refereed]

　View Summary

In this paper, we focus on the video transcoder as a bit rate reducer in a network node and propose a rate control scheme for a low-delay MPEG-2(1) video transcoder. First, we summarize the requirements of a rate control algorithm for low-delay transcoding. Next, based on these requirements, we describe the proposed rate control scheme in detail. Then, we analyze the input and output buffer delay and calculate the total delay time of the proposed transcoder. Finally, we evaluate the proposed scheme from the simulation results of experiments on picture quality, transcoding delay time and GOP (Group Of Pictures) structure information (N/M value) of the input bit stream. Consequently, we showed that the proposed scheme can provide the same picture quality as a traditional scheme and is independent of the GOP structure.
Rate Control Scheme for Low-Delay MPEG-2 Video Transcoder.

Hiroyuki Kasai, Tsuyoshi Hanamura, Wataru Kameyama, Hideyoshi Tominaga

Proceedings of the 2000 International Conference on Image Processing, ICIP 2000, Vancouver, BC, Canada, September 10-13, 2000 964 - 967 2000 [Refereed]

DOI DOI2
Rate control scheme for low-delay MPEG-2 video transcoder

H Kasai, M Sugiura, T Hanamura, W Kameyama, H Tominaga

VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2000, PTS 1-3 4067 473 - 484 2000

　View Summary

In this paper, we focus on the video transcoder as a bit rate reducer in a network node and propose a rate control scheme for a low-delay MPEG-2(1) video transcoder. First, we summarize the requirements of a rate control algorithm for low-delay transcoding. Next, based on these requirements, we describe the proposed rate control scheme in detail. Then, we analyze the input and output buffer delay and calculate the total delay time of the proposed transcoder. Finally, we evaluate the proposed scheme from the simulation results of experiments on picture quality, transcoding delay time and GOP (Group Of Pictures) structure information (N/M value) of the input bit stream. Consequently, we showed that the proposed scheme can provide the same picture quality as a traditional scheme and is independent of the GOP structure.
再量子化特性を考慮したMPEG-2トランスコーダ量子化制御方式の検討

永吉功, 笠井裕之, 花村剛, 亀山渉, 富永英義

電子情報通信学会技術報告書 IE99-75 9 - 16 1999.11
低遅延MPEG-2ビデオトランスコーダレート制御方式の検討

笠井裕之, 花村剛, 西村敏, 亀山渉, 富永英義

情報処理学会 AVM研究会 40051 45 - 50 1999.10
DAVICに基づく医療Archive System

亀山渉

画像電子学会メディカルマルチメディア研究会 1999.09
低遅延MPEG-2トランスコーダ符号量制御方式の検討

笠井裕之, 花村剛, 永吉功, 亀山渉, 富永英義

電子情報通信学会技術報告書 IE99-12,OFS99-35,IE99-44 47 - 54 1999.09
低遅延MPEG-2トランスコーダレート制御方式の検討

笠井裕之, 花村剛, 西村敏, 亀山渉, 富永英義

電子情報通信学会秋季ソサエティ大会 D-11-20 106 1999.09
低遅延MPEG-2リアルタイムビデオトランスコーダ符号量制御方式の検討

笠井裕之, 花村剛, 西村敏, 亀山渉, 富永英義

ピクチャーコーディングシンポジウム 99 P-1.07 15 - 16 1999.09
リアルタイムMPEG-2ビデオトランスコーダソフトウェアの開発

西村敏, 笠井裕之, 高屋和幸, 亀山渉, 榊直昭, 花村剛, 富永英義

情報処理学会 AVM研究会 39958 25 - 30 1999.06
ソフトウェアダウンロード環境を実現する高能率伝送方式提案

吉井, 榊, 亀山, 片山, 花村, 尾崎

映像情報メディア学会年次大会 40001 1998.07
ソフトウェアダウンロードによる次世代放送方式

吉井, 榊, 亀山, 片山, 花村

電子情報通信学会総合大会 B-3-26 1998.03
VODとDAVIC

亀山渉

bit, 共立出版 Vol.29 ( No.12 ) 114 - 122 1997.12
DAVIC仕様HDTV-VoDシステムの開発

久保田, 大槻, 鈴木, 亀山, 花村, 佐々木

情報処理学会 AVM研究会 1997.09
DAVIC仕様HD-VoDシステムの開発

大槻, 鈴木, 久保田, 亀山, 花村, 佐々木

電子情報通信学会ソサイエティ大会 1997.09
Virtual MachineとMHEG

亀山渉

情報処理学会次世代ボーダレスメディア '97 シンポジウム 1997.07
MHEG: 国際標準化の動向とJAVAとの関連

滝川啓, 亀山渉

画像電子学会第8回メディア統合技術研究会 1997.03
Design of Motion Compensation Filters for Frequency Scalable Coding - Drift Reduction.

Masahiro Iwahashi, Koichi Ohyama, Wataru Kameyama, Noriyoshi Kambayashi

1994 IEEE International Symposium on Circuits and Systems, ISCAS 1994, London, England, UK, May 30 - June 2, 1994 277 - 280 1994 [Refereed]

DOI
Hierarchical coding scheme of video signal with scalability and compatibility

Tsuyoshi Hanamura, Wataru Kameyama, Hideyoshi Tominaga

Signal Processing: Image Communication 5 ( 1-2 ) 159 - 184 1993 [Refereed]

　View Summary

A video coding scheme that enables hierarchical video signal processing in MPEG II is proposed in this paper. Dividing each input picture into hierarchical layers, a proposed prediction is applied into each layer. The proposed coding scheme is to be characterized on the following points: (1) Non-interlaced pictures for each layer picture, even for the highest resolution layer. (2) Hierarchical motion estimation to provide precise motion vectors in less process time, to each layer of pictures. (3) Hierarchical prediction and layer pictures to provide various size of video signal for display, and to be compatible with MPEG I. (4) Up-sampling and down-sampling processes without phase distortion between neighbor layers. Other functions are almost the same as MPEG I. As the experimental result, the quality of decoded pictures highly depends on the quality of non-interlaced pictures that are provided from the pre-process. © 1993.

DOI

Scopus

15

Citation

(Scopus)
Separation and storage method for the elements of map image and the experimental system

Wataru Kameyama, Hideyuki Oka, Hideyoshi Tominaga

Systems and Computers in Japan 19 ( 9 ) 77 - 91 1988 [Refereed]

　View Summary

This paper aims at a system which receives the image information of a commercially available map, separates the information according to their categories, and stores the information so that re‐editing is possible. Algorithms are proposed by which the map information given as the input image is separated with the least intervention of human operation, and only the incomplete points are indicated by the human observation. An evaluation of the algorithms is presented. In the past, various algorithms have been proposed for the image separation. In this work, an experimental system was constructed to demonstrate the feasibility of constructing the actual system. By the proposed algorithm, most of the characters, roads, coastlines, railways and boundary lines were separated from the black‐and‐white map. The information compression for storage and indexing for retrieval are also performed. The data storage method is discussed. Finally, the map output of the system is described, and several examples of output maps are presented. Copyright © 1988 Wiley Periodicals, Inc., A Wiley Company

DOI

Scopus
Displaying Navigation Information Utilizing the Gazing-Point to Reduce Mental and Visual Workload for Drivers

Mohammad Abdullah A Almogbel, Wataru Kameyama, Mutsumi Suganuma

電子情報通信学会, 2014年総合大会 A-15-13
基礎律動に基づくユーザの驚き・戸惑いの推定に関する基礎的検討

菅沼睦, 石黒真人, 亀山渉

電子情報通信学会, 2014年総合大会 A-15-22

▼display all

Books and Other Publications

IPTV時代のデジタル放送教科書 (インプレス標準教科書シリーズ)

亀山渉, 早稲田大学理工学術院, 花村剛, 株)エモヴィス〕

インプレス 2010.03 ISBN: 4844328530

ASIN
IPTV時代のデジタル放送教科書

亀山渉, 他

インプレスR&D 2010.03 ISBN: 9784844328537
画像電子情報ハンドブック

亀山, 他

画像電子学会編, 東京電機大学出版局 2008.02
2007朝日ジュニア百科年鑑

亀山, 他

朝日新聞社 2007.03
そこが知りたい最新技術オーディオ・ビデオ圧縮入門

亀山渉, 金子格, 渡辺裕( Part： Joint author)

インプレスR&D 2007.03 ISBN: 4844323911

ASIN
そこが知りたい最新技術オーディオ・ビデオ圧縮入門 : MPEG-AACとH.264/AVC時代の

亀山渉, 金子格, 渡辺裕

インプレスR&D, インプレスコミュニケーションズ (発売) 2007 ISBN: 9784844323914
デジタル・コンテンツ流通教科書 (インプレス標準教科書シリーズ)

亀山渉( Part： Sole author)

インプレスR&D(インプレス) 2006.12 ISBN: 4844395084

ASIN
デジタル・コンテンツ流通教科書

亀山, 他( Part： Joint author)

インプレスR&D 2006.12 ISBN: 4844323423

ASIN
先端メディアと人間の科学

亀山, 他

早稲田大学eヒューマン研究所 2006.03
改定版ディジタル放送教科書下

亀山, 他

インプレス 2005.03
モバイル向け放送/サーバー型〜MPEG-7/21

亀山渉, 花村剛

インプレスネットビジネスカンパニー, インプレスコミュニケーションズ (発売) 2005 ISBN: 9784844320692
改定版ディジタル放送教科書上

亀山, 他

インプレス 2004.10
改訂版デジタル放送教科書(上) (インプレス標準教科書シリーズ)

亀山渉, 花村剛( Part： Supervisor (editorial))

インプレスR&D(インプレス) 2004.09 ISBN: 4844395033

ASIN
MPEG-1/2/4〜H.264/AVC

亀山渉, 花村剛

インプレスネットビジネスカンパニー, インプレスコミュニケーションズ (発売) 2004 ISBN: 9784844320272
新ブロードバンド教科書上

亀山, 他

IDGジャパン 2003.10
情報圧縮技術

亀山渉, 金子格, 渡辺裕

IDGジャパン 2003.04
IDG基礎から学ぶ情報圧縮技術―圧縮の秘密はどこにあるのか!

亀山渉, 渡辺裕, 金子格( Part： Joint author)

IDGジャパン 2003.03 ISBN: 4872804864

ASIN
ディジタル放送教科書上・下

亀山, 他

IDGジャパン 2003.02
ブロードバンド+モバイルMPEG教科書

亀山, 他

アスキー 2003.02
ディジタル放送教科書（下） MPEG-7/MPEG-21/TV-Anytime

亀山渉, 花村剛( Part： Joint author)

IDGジャパン 2003.01 ISBN: 4872804783

ASIN
ディジタル放送教科書（上）MPEG-1/MPEG-2/MPEG-4

亀山渉, 花村剛( Part： Joint author)

IDGジャパン 2003.01 ISBN: 4872804775

ASIN
コンパクト版インターネット辞典

亀山, 他

IEインスティテュート 2000.12
インターネット教科書

亀山, 他

I&E神蔵研究所 2000.06
インターネットRFC事典

亀山, 他

アスキー 1998.11
コンピュータ/通信/放送標準事典

亀山, 他

アスキー 1998.05
ディジタル放送・インターネットのための情報圧縮技術

亀山, 他

bit別冊/共立出版 1998.02
ポイント図解式通信プロトコル事典

亀山, 他

アスキー 1996.11
実践MPEG教科書

亀山, 他

アスキー 1995.11
メディア統合―マルチメディア標準化から感性情報処理の最新技術まで

森島繁生, 渡辺裕, 亀山渉, 前原文雄, 藤本真, 中川雅通, 西田正吾, 岸野文郎, 岩谷徹, 森島繁生( Part： Joint author)

リアライズ理工センター 1994.12 ISBN: 4947655747

ASIN
メディア統合

亀山, 他

リアライズ社 1994.12
最新MPEG教科書

亀山, 他

アスキー 1994.08

▼display all

Presentations

B-6-133 Push-type Content Delivery over 5G Mobile Communication System in NDN

Maeda Yasuaki, Yan Zhiwei, Park Yong-Jin, Kameyama Wataru, Nisar Kashif, Ibrahim Ag, Asri Ag, Hijiazi Moh, Hanafi Ahmad, Kim Heedon

Proceedings of the IEICE General Conference

Presentation date： 2016.03
B-6-90 Content Offloading System over CCN Architecture Utilizing Transportation Systems

Kisara Hiroto, Kurokawa Sayo, Kanai Kenji, Katto Jiro, Tsuda Toshitaka, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2015.02
On Applying Sparse Coding to Classification of Users' Desired Images with Eye Movements

西口侑希, 菅沼睦, 亀山渉

IPSJ SIG Notes

Presentation date： 2015.02

　View Summary

Digital image consumption has grown so rapidly, and image retrieval is expected to be more improved. To bridge the semantic gap which is an underlying problem of image retrieval, relevance feedback can be one of the solutions. Relevance feedback with eye-movements allows users to give their feedback just by watching the images and, moreover may make it possible to select the images even though they don't recognize what they want. Feedback with eye-movements demands the reasonable classification of users' desired images with eye-movements. We have already reported the result of a SVM trained with the features extracted from eye-movements and pupil size toward each image. In this report, it is shown that we improve the classification performance with sparse coding.
Packet Aggregation and Segregation Mechanism over Named Data Networking

HARADA Sho, YAN Zhiwei, PARK Yong-Jin, KAMEYAMA Wataru

IEICE technical report

Presentation date： 2014.10

　View Summary

Named Data Networking (NDN) is a clean slate future Internet architecture optimized for today's demand, which is to retrieve contents efficiently. The Internet is mainly used to retrieve contents in terms of traffics. In NDN, communications can be done based on the names of contents instead of IP addresses. The name-based routing and in-network caching functions of NDN optimize communications. Users can retrieve content only by sending a request packet, which includes the requested content name. However, when a user retrieves many contents or many users request large content at the same time, the user needs to send many number of request packets. It may cause network congestions. In this paper, we propose a mechanism that enables users to request contents only by sending one aggregated request packet and that the contents can be aggregated in networks, which can reduce the network loads.
Proactive Content Caching and Delivery Scheme utilizing Transportation Systems

Sato Takuro, Park Yong Jin, Tsuda Toshitaka, Goto Shigeki, Tanaka Yoshiaki, Kameyama Wataru, Shimamoto Shigeru, Katto Jiro, Ichino Masatsugu

IEICE technical report

Presentation date： 2014.10

　View Summary

In the future, network traffic will be increasing according to demand of big traffic of moving picture on the mobile communication environment. For processing large traffic, virtualized network based on SDN (Software defined Network) has been provided for purpose of cloud networking as CDN (Contents Delivery Network). On the other hand, the ICN (Information Centric Network) has been proposing as IP independent network which isn't based on IP address. And it has been discussing about advantages compared to the IP network. This paper shows the experimental results of Proactive Content Caching and Delivery Scheme utilizing Transportation Systems. This research has been supported by SCOPE organized by Ministry of Internal Affairs and Communications.
H-035 Classification of User's Desired Images Using Dispersion of Fixation Occurrence

Nishiguchi Yuki, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2014.08
J-026 A Consideration on Pupillary Light Reflex Model using Pupil Size Averaging.

Kuroda Masafumi, Nishiguchi Yuki, Nagashima Motoki, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2014.08
A Consideration on Music Classification Using Background Activity of Brain

Miki Ryosuke, Kameyama Wataru, Suganuma Mutsumi

Technical report of IEICE. HIP

Presentation date： 2014.05

　View Summary

"Genre" is one of the music metadata. Generally, music genre is used to classify similar music tracks reflecting their melodies and impressions. However, genre doesn't always match user's impression of music. In order to make the genre more effective as one of the metadata, a classification method, which reflects user's impression, is needed. In this paper, we discuss a method of music classification by using background activity of brain.
A Consideration on Music Classification Using Background Activity of Brain

Miki Ryosuke, Kameyama Wataru, Suganuma Mutsumi

Technical report of IEICE. HCS

Presentation date： 2014.05

　View Summary

"Genre" is one of the music metadata. Generally, music genre is used to classify similar music tracks reflecting their melodies and impressions. However, genre doesn't always match user's impression of music. In order to make the genre more effective as one of the metadata, a classification method, which reflects user's impression, is needed. In this paper, we discuss a method of music classification by using background activity of brain.
Performance Validation of Proactive Content Caching utilizing Transportation Systems by Field Experiment

KANAI Kenji, MUTO Takeshi, KISARA Hiroto, KATTO Jiro, TSUDA Toshitaka, KAMEYAMA Wataru, Park Yong-Jin, SATO Takuro

IEICE technical report. MoNA, Mobile network and applications

Presentation date： 2014.05

　View Summary

We propose proactive content caching scheme utilizing transportation systems for robust video streaming with efficient wireless resources usage. In this paper, we develop a prototype system and evaluate its performances by using actual train vehicles and computer simulations. Evaluations conclude that our system can achieve higher-speed and highly-reliable video streaming rather than traditional CDN scenarios using cellular networks.
Performance Validation of Proactive Content Caching utilizing Transportation Systems by Field Experiment

Kenji Kanai, Takeshi Muto, Hiroto Kisara, Jiro Katto, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

IPSJ SIG technical reports

Presentation date： 2014.05

　View Summary

We propose proactive content caching scheme utilizing transportation systems for robust video streaming with efficient wireless resources usage. In this paper, we develop a prototype system and evaluate its performances by using actual train vehicles and computer simulations. Evaluations conclude that our system can achieve higher-speed and highly-reliable video streaming rather than traditional CDN scenarios using cellular networks.
Performance Validation of Proactive Content Caching utilizing Transportation Systems by Field Experiment

Kenji Kanai, Takeshi Muto, Hiroto Kisara, Jiro Katto, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

IPSJ SIG Notes

Presentation date： 2014.05

　View Summary

We propose proactive content caching scheme utilizing transportation systems for robust video streaming with efficient wireless resources usage. In this paper, we develop a prototype system and evaluate its performances by using actual train vehicles and computer simulations. Evaluations conclude that our system can achieve higher-speed and highly-reliable video streaming rather than traditional CDN scenarios using cellular networks.
B-6-94 Proactive Delivery Scheduling in the Content Delivery System utilizing Transportation Systems

Katto Jiro, Kanai Kenji, Tsuda Toshitaka, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2014.03
B-6-39 Performance Evaluation of Proactive Delivery Scheduling and its Multi-channel Extension

Kanai Kenii, Katto Jiro, Tsuda Tositaka, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2014.03
A-15-22 Preliminary Analysis on Estimating Users' Surprise or Confusion Based on Background Activity

Suganuma Mutsumi, Ishiguro Makoto, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2014.03
A-15-12 Relationship between Comic Reader's Eye-blink and Pupil Size Variation

Matsui Ken, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2014.03
A-15-11 A Consideration on Pupillary Light Reflex Model and Personal Fluctuation of Pupil Size

Ri Haku, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2014.03
D-12-15 Pupil Size Based Features for Image Classification Using Eye Movements

Nishiguchi Yuki, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2014.03
D-4-10 Comparison of Word-Similarity Evaluation Methods using Japanese WordNet in Image Retrieval System

Chen Feng, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2014.03
A Consideration on Music Classification Using Background Activity of Brain

三木亮祐, 亀山渉, 菅沼睦

ヒューマンインタフェース学会研究報告集

Presentation date： 2014
Development and Evaluation of Regional Information Platform and Information Distribution System : For Tourism Promotion and Disaster Prevention

MIYOSAWA Tadashi, HIROSE Hiroo, TSUCHIYA Takeshi, KAMEYAMA Wataru, KOYANAGI Keiichi, YAMAMOTO Hisashi, KARASAWA Hideyasu, KARASAWA Hidenaga, MASUZAWA Kenichi

IEICE technical report. Image engineering

Presentation date： 2013.12

　View Summary

As the main focus of this research, we constructed an experimental website for the communication broadcasting cooperative transmission system and developed a regional information platform. In addition, we carried out a small-scale demonstration experiment at the Chino station.
Development and Evaluation of Regional Information Platform and Information Distribution System - For Tourism Promotion and Disaster Prevention -

三代沢正, 広瀬啓雄, 土屋健, 亀山渉, 小柳惠一, 山本永, 唐澤英安, 唐澤英長, 増沢健一

研究報告オーディオビジュアル複合情報処理（AVM）

Presentation date： 2013.11

　View Summary

地域観光振興と防災に向け放送と通信を連携させた情報配信システムの開発と実証実験を行った。地域情報プラットフォームの開発と放送通信連携配信システムの実験サイトを構築し、茅野駅周辺における実証実験を行うことができたので、その報告を行う。As the main focus of this research, we constructed an experimental website for the communication broadcasting cooperative transmission system and developed a regional information platform. In addition, we carried out a small-scale demonstration experiment at the Chino station.
J-006 Comparison of In-Vehicle Navigation Guidance by Fixed-Spot, Voice and Gazing-Point

Almogbel Mohammad Abdullah, Sriprasertsuk Pao, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2013.08
D-026 A Study on Audiovisual Content Retrieval System using WordNet and HBase Mapping

Chen Feng, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2013.08
J-024 A Preliminary Study on Discriminating Like and Dislike of Taste using EEG

Tai Bin, Sriprasertsuk Pao, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2013.08
J-023 A Preliminary Study on Interest Level Estimation of Reading Comic using Reading Time of Each Page and Eyeblink

Matsui Ken, Suganuma Mutsumi, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2013.08
D-5-5 A Study on Audiovisual Content Retrieval System using WordNet

Chen Feng, Sriprasertsuk Pao, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2013.03
K-007 Efficient Scale Database Construction for Scale Filtering in SURF-based AR Application

Dang Hoang Anh, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2012.09
I-036 Personalized TV-program Recommendation using Users' Viewing Histories and Time-Frames

DINH Quoc Hung, SRIPRASERTSUK Pao, KAMEYAMA Wataru, FUKUDA Kenji

情報科学技術フォーラム講演論文集

Presentation date： 2012.09
次世代コンテンツ流通〜コンテンツ流通の新潮流を目指して〜

Presentation date： 2012.03
K-054 Task Level SURF Keypoint Extraction Parallelization in AR Application

Dang Hoang Anh, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2011.09
Beyond Next Generation Audiovisual System

Presentation date： 2011.03
B-7-5 A Presentation Control Method for Fusion of Broadcasting and Communications

Ohmata Hisayuki, Otsuki Kazuhiro, Fujii Arisa, Majima Keigo, Inoue Tomoyuki, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2011
7-4 Preliminary Study on Estimating Degree of Interest for Audiovisual Information Using User's Bio Signals

SUGANUMA Mutsumi, KAWAMURA Eri, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION

Presentation date： 2011

　View Summary

In this study, we would report the result of preliminary study on measuring the attitude against video content by user's bio-signals. In present study, we have measured the eye information and the background brain activity of viewers during watching video content. We would discuss the possibility of user's bio-signals for user's attitude estimation.
7-3 On Consideration of Information Recommendation Based on Content Attributes and User Attributes

SEKI Akiko, SRIPRASERTSUK Pao, SUGANUMA Mutsumi, KAMEYAMA WSataru

PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION

Presentation date： 2011

　View Summary

In this paper, we propose a method of evaluating the personalized value of contents for content recommendation systems. In the proposed system, the user's interest from user's vital reaction and viewing history is dynamically detected and analyzed to define the value of contents based on both user-metadata and content-metadata.
2009 ITE Winter Annual Convention

Wataru Kameyama

ITEJ

Presentation date： 2010.04
A-15-1 Evaluation of Video Summarization Based On Bio-Signals

Ono Yuya, Ong Kok-Meng, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2010.03
A-15-2 Consideration of Human Gaze Prediction in Video Shot Using Saliency Map and Face Detection

Ong Kok-Meng, Kameyama Wataru

Proceedings of the IEICE General Conference

Presentation date： 2010.03
4-8 Personalization of Video Content Features and its Application

ONG Kok-Meng, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE ANNUAL CONVENTION

Presentation date： 2010

　View Summary

In this paper, we propose to extract personalized video features based on the viewer's interest. The viewer's interest toward the video content is modeled in real time by monitoring their pupil size, gazing point and heart rate. The experimental results show that the video summary generated using weighted video features achieves higher precision and recall ratios for video with high narration nature if compared to video summary generated by video features without personalized weight prediction.
On Consideration of Khmer Character Recognition Based on Character's Semantic

Presentation date： 2009.12
On Consideration of Khmer Text Retrieval System based on the Specific Characteristics of Khmer

Presentation date： 2009.12
J-007 Analaysis of Human Gaze in Videos with Human Face : Comparison of Gaze Distance with Detected Face and Motion Center

Ong Kok-Meng, Kameyama Wataru

情報科学技術フォーラム講演論文集

Presentation date： 2009.08
Construction of a digital archive for "Nippon News" and considerations for archive management

守屋豊, 亀山渉

IEICE technical report

Presentation date： 2009.06
A Study on Language Design of Creating Compound Metadata Schema Method Based on Museum Information

秋元良仁, 亀山渉

じんもんこん2006論文集

Presentation date： 2006.12
On Contents Distribution Business Modeling and its Evaluation

関亜紀子, 亀山渉

情報処理学会研究報告電子化知的財産・社会基盤（EIP）

Presentation date： 2004.03

　View Summary

コンテンツの流通形態や利用形態の広がりにより、Digital Rights Management の必要性が高まる中、さまざまなコンテンツ流通ビジネスにおいて、DRM System やDRM 技術が導入されている。これらの適切な活用は、効果的な権利の運用や管理に繋がると考えられるが、今日、これらの明確な選択基準や評価基準は存在しない。本稿では、このDRM 技術とDRM モデルの選択手法、DRMSystem の評価手法に関して、コンテンツ流通における各種DRM 処理の分析とコンテンツ流通ビジネスのモデル化を図ることにより検討する。Digital Contents have came to be used in various places,and Digital Rights Management is becoming an important technology.So,many contents distribution business has implemented DRM System and DRM technology. Effective rights management can be attained by utilizing such DRM technology appropriately.However,selection or evaluation criteria of such technology do not exist today.Therefore,this paper analyzes each DRM processing in digital contents distribution and considers modeling of contents distribution business.And,it proposes the selection technique of DRM technologies,and the evaluation technique of DRM system.
Educational application of stereoscopic images over broadbanded networks

Kazama Mizuho, Kawai Takashi, Kameyama Wataru, Urano Yoshiyori, Murata Keisi

Proceedings of the Annual Meeting of Japan Ergonomics Society

Presentation date： 2002
Personalized TV System Using Program and User Preference Metadata

Ushio Soichiro, Belleguie Loys, Kameyama Wataru

PROCEEDINGS OF THE ITE CONVENTION

Presentation date： 2002
A Study on Re-quantization Parameter Control Scheme for MPEG-2 Video Transcoder

KASAI Hiroyuki, NAGAYOSHI Isao, NAKAHIRA Kouta, HANAMURA Tsuyoshi, KAMEYAMA Wataru, TOMINAGA Hideyoshi

IEICE technical report. Image engineering

Presentation date： 2001.03

　View Summary

In this paper, we propose a quantization control method for MPEG-2 video transcoder. At first, we investigate the requantization characteristics in MPEG-2, and show the reduced bits in requantization are limited to some particular values. Next, we propose the quantization control scheme based on the requantization characteristics mentioned above. In simulation experiments, we apply the proposed control scheme to some convetional rate control schemes. At, we show the effivtiveness of the proposed control scheme.
Adaptive Video Rate Control Scheme for MPEG-2 Multi-Program TS Transcoder

KASAI Hiroyuki, SUGIURA Maki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

IEICE technical report. Image engineering

Presentation date： 2001.01

　View Summary

In this paper, we propose a video rate control scheme for MPEG-2 multi-program transport stream (TS) transcoder. At first, we explain its algorithm that considers the composition, rate distortion characteristics, and start-end points of pictures in current transport stream to be transcoded. Next, we show the transcoder with the proposed video control scheme, and explain the process flow. Finally, from simulation experiments, we compare the proposed rate control scheme to the conventional rate control scheme in terms of changes of a ratio between input bits and output bits, coding bits and picture quality.
Design of Motion Compensation Filters of Frequency Scalable Coding

Iwahashi Masahiro, Kameyama Wataru, Ohyama Koichi, Kanbayashi Noriyoshi

IEICE technical report. Circuits and systems

Presentation date： 1993.11

　View Summary

This report preposes a new MC(motion compensation)scheme in layered coding system to reduce blurring called ″drift″.The syste m compresses digital video data with NxN point DCT(discrete cosine transform)and MC.Furthermore it reconstructs down scaled pictures for the use of layered coding. The problem we are concerning with is the ″drift″ which is obse rved in reconstructed,down scaled and predicted pictures.First of all,the problem is investigated from multirate digital signal processing point of view.After that,a new MC in decoder is preposed which uses half band filteips.Finally,effectiveness of the method is confirmed by applying it to video data coding.

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Research Projects

Automatic Rights Inheritance with Rights Permanency and Consistency in Content Circulation

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research

Project Year :

2007

-

2008

KAMEYAMA Wataru, SEKI Akiko
Open Digital Write Management and Processing System for Content Distribution

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research

Project Year :

2003

-

2005

KAMEYAMA Wataru, SEKI Akiko

　View Summary

The tree year research can be summarized as following five points.
1.We propose a method to transfer and/or combine various rights information by the reliable info-transmission guaranteeing the correctness of the log as recorded at terminal.
2.We propose a method of flexible rights information distribution of rights holders, and also propose and evaluate a method of re-composition and re-editing rights information in a distributed processing way.
3.We propose a scalable method for rights information processing that enables to describe content-viewing rights and corresponding control without any contradictions. By the method, allowed.action(s) against any segment of content and viewing rights relationship among contents can be described. Moreover, "targeting" satisfying users' preferences and new functionality called "content substitution" are enabled. We also evaluate the prototype system.
4.We clarify functions of rights information processing entities and relationship among them. Three entities (license control function, right inheritance control function, and license/right management log function) are essential and enable not only the primary content distribution but also the secondary.
5.We name the future multimedia environment "Content Circulation" where content consumers may act as content creators, circulatedly or repeatedly, and also clarify the issues of secondary content distribution and related rights processing. At generating derived rights information, the proposed language automatically processes and generates it while respecting the original rights and guaranteeing the consistency of rights of the originals and the newly generated ones.
The open issue still remaining is to build up a prototype system in order to validate and evaluate the proposed method of 5.
Research of practical use of wireless ATM technology for the high level medical information network support system in Honjyo area

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research

Project Year :

1999

-

2001

TOMINAGA Hideyoshi, SATO Takuro, KAMEYAMA Wataru, URANO Yoshiyori, SAITO Ryuji, KASAHARA Takao

　View Summary

1 Objective of the research
In collaboraticn with "Research and development of district-oriented high level information and communication service applications" Project which is underway in Honjyo area of Saitama prefecture, this research studies practical use of wireless ATM technology through application to the access network in the high level medical information network support system infrastructure in the area.
2 Summary of the research result so far and the prospect for further study
The collaborative project mentioned above has been implementing the regional wireless LAN and the high level medical information network support system in Honjyo city and adjacent townships of Saitama prefecture. In FY1999 we conducted the basic research activities as study and design of the wireless ATM network using optical wireless communication system, basic experiment, and investigation of the system environment together with the research committee of the collaborative project. In FY2000 we implemented the optical wireless ATM network, designed the architecture to interconnect with the network of the collaborative project followed by the functional confirmation through high definition video delivery and MPEG4 audio-visual communication, and verification test through multi-points distance learning. In FY2001 we continued further verification of the integrated network including the optical wireless ATM network by contents delivery through the digital CATV network in neighboring Kamiizumi village as well as MPEG-4 audio-visual contents delivery, which confirmed the practical use of wireless ATM technology. Also we studied the network support system and the service system for the high level medical information as well as the current situation of the medical organizations in Honjyo area in order to look into the possibility of the application of the research system throughout the area. We are going to continue to work together with the collaborative project in social welfare and medical fields to reflect well the results of this research work.
In this year, we modified the image retrieval scheme by using "GAMON" or Videoprint and investigated its application from the viewpoint of building conventional TV broadcasted content retrieval system connected via network

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research

Project Year :

1999

-

2000

TOMINAGA Hideyoshi, HANAMURA Tsuyoshi, KAMEYAMA Wataru, KASAHARA Takao, SUGIURA Maki, TAKAHASHI Kstsunao

　View Summary

1. Modification of a feature extraction method to improve its performance : Firstly, in the retrieval method by using "GAMON", we proposed a hierarchical retrieval method, targeted to retrieve the requested video quickly and accurately from the archived video contents in large storage. In the proposed method, one-dimensional DCT operation to a temporal sequence of average color value per frame is executed with quantization of coefficients and moving picture's feature is finally extracted as its lower frequency components. Using this feature as "GAMON", quick and accurate image retrieval becomes possible. As one of experimental results, image retrieval of 34 sequences(TV ads film : each 15 seconds) out of 24-hours-TV content archive, are executed within 3 minutes. Additionally, we evaluated our modified system's performance through previous simulation experiments of image retrieval. As a result, modified system achieved remarkable performance, namely 13 times faster compared to our previous system and 20,000 times faster compared to sequence's time length.
2. Application study on conventional TV broadcasted content retrieval system : We assumed a video content distribution system via network with large video content archive. Conventional TV(analog) contents' quality is easily influenced by their receiving environment and even from the same source, different features can be extracted from contents with ghost, for example. Therefore we have intentionally prepared an archive with some contents including ghosts, designed an image retrieval system by using "GAMON" for MPEG-2 images and implemented it. Through simulation experiments, very high accurate image retrieval are done with results of 0 surplus detection and 0 failure detection.
生体信号を利用したアトモスフェア・メタデータの抽出・記述・利用に関する多角的研究

科学研究費助成事業(早稲田大学) 科学研究費助成事業(基盤研究(C))
Advanced Information System Based on XML Representation
Multimedia Contents Description Interfaces
Collaborative Contents-Creation Environment using High-Resolution Image Transmission
通信・放送融合システムに関する研究
メタデータの放送における応用に関する研究
映像ダイジェスト再生に関する研究
メタデータの自動生成に関する研究
柔軟な情報表現スキーマに関する研究
オーディオビジュアルコンテンツに対する人間の感情理解に関する研究
日本ニュースのナレーション等に関するデータベース化に伴うシステム構築に関する研究
我が国の情報通信技術のASEAN諸国への展開に向けたコンテンツ流通および公的分野における利活用の調査研究
Content Recommendation System
地域観光振興と防災に向けデータマイニングを活用した地域情報プラットフォームとエリアワンセグ配信システムの研究開発

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Misc

生体信号と顔特徴点分析による複数の映像視聴者情動分類に関する考察

田上結衣, 菅沼睦, 亀山渉, CLIPPINGDALE Simon

情報科学技術フォーラム講演論文集 17th 261‐262 2018.09

J-GLOBAL
キネクトを用いた映像視聴時の弱表情の検出について

CLIPPINGDALE Simon, 望月貴裕, 佐野雅規, 菅沼睦, 亀山渉

情報科学技術フォーラム講演論文集 17th 251‐252 2018.09

J-GLOBAL
転移学習を用いた瞳孔径の対光反射補正方式に関する検討

加藤敦士, 菅沼睦, 亀山渉

情報科学技術フォーラム講演論文集 17th 295‐296 2018.09

J-GLOBAL
EEG-signals based cognitive workload detection of vehicle driver using deep learning

Mohammad A. Almogbel, Anh H. Dang, Wataru Kameyama

International Conference on Advanced Communication Technology, ICACT 2018- 256 - 259 2018.03

　View Summary

Vehicle driver's ability to maintain optimal performance and attention is essential to ensure the safety of the traffic. Electroencephalography (EEG) signals have been proven to be effective in evaluating human's cognitive state under specific tasks. In this paper, we propose the use of deep learning on EEG signals to detect the driver's cognitive workload under high and low workload tasks. Data used in this research are collected throughout multiple driving sessions conducted on a high fidelity driving simulator. Preliminary experimental results conducted on only 4 channels of EEG show that the proposed system is capable of accurately detecting the cognitive workload of the driver with an enormous potential for improvement.

DOI
SvgAI - Training artificial intelligent agent to use SVG editor

Anh H. Dang, Wataru Kameyama

International Conference on Advanced Communication Technology, ICACT 2018- 132 - 138 2018.03

　View Summary

Deep reinforcement learning has been successfully used to train artificial intelligent (AI) agents to outperform humans in many tasks as well as to enhance the capability in robotic automation. In this paper, we propose a framework to train an AI agent to use scalable vector graphic (SVG) editor to draw SVG images. Hence, the objective of this AI agent is to draw SVG images that are similar as much as possible to their target raster images. We find that it is crucial to distinguish the action space into two sets and apply a different exploration policy on each set during the training process. Evaluations show that our proposed dual-exploration policy greatly stabilizes the training process and increases the accuracy of the AI agent. SVG images produced by the proposed AI agent also have superior quality compared to popular raster-to-SVG conversion software.

DOI
A Consideration on QoE Estimation while Watching Video with Delay by using Random Forest Classifier to Multimodal Bio-signals

河内瞭彦, 菅沼睦, 亀山渉

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117 ( 486 ) 121 - 126 2018.03

CiNii
A Consideration on Video Viewer's Emotion Estimation based on the Correlation between Nasal Skin Temperature and Heart Rate Variability

橋本稜平, 菅沼睦, 亀山渉, クリピングデルサイモン

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117 ( 486 ) 127 - 132 2018.03

CiNii
CNNによる視野を共有しないカメラ間での人物照合

渡邊滉大, 亀山渉, 澁谷直大

電子情報通信学会大会講演論文集(CD-ROM) 2018 ROMBUNNO.D‐12‐69 2018.03

J-GLOBAL
交通系ICカード大規模データにおける非負値行列因子分解を用いた利用者行動分析の一検討

八巻櫻, 菅沼睦, 亀山渉, 西野理恵子, 柴田和義

電子情報通信学会大会講演論文集(CD-ROM) 2018 ROMBUNNO.D‐4‐5 2018.03

J-GLOBAL
アンケート回答と生体信号の対応関係を用いたk‐NNによる映像視聴者の情動推定に関する検討

FU Ying, 橋本稜平, 田上結衣, 菅沼睦, 亀山渉, CLIPPINGDALE Simon

電子情報通信学会大会講演論文集(CD-ROM) 2018 ROMBUNNO.H‐2‐1 2018.03

J-GLOBAL
ながら視聴を想定した映像品質に対する瞳孔径変動の一考察

坂本貴幸, 菅沼睦, 亀山渉

電子情報通信学会大会講演論文集(CD-ROM) 2018 ROMBUNNO.B‐11‐3 2018.03

J-GLOBAL
拡張SRCを用いた視野を共有しないカメラ間の人物同定

西口ひかり, 亀山渉, 澁谷直大

電子情報通信学会大会講演論文集(CD-ROM) 2018 ROMBUNNO.D‐12‐68 2018.03

J-GLOBAL
A Consideration on Video Viewer's Emotion Estimation based on the Correlation between Nasal Skin Temperature and Heart Rate Variability

橋本稜平, 菅沼睦, 亀山渉, CLIPPINGDALE Simon

電子情報通信学会技術研究報告 117 ( 486(CQ2017 103-129) ) 127‐132 2018.03

J-GLOBAL
A Consideration on QoE Estimation while Watching Video with Delay by using Random Forest Classifier to Multimodal Bio-signals

河内瞭彦, 菅沼睦, 亀山渉

電子情報通信学会技術研究報告 117 ( 486(CQ2017 103-129) ) 121‐126 2018.03

J-GLOBAL
キネクトセンサによる映像視聴時の弱表情検出についての一検討

CLIPPINGDALE Simon, 望月貴裕, 佐野雅規, 菅沼睦, 亀山渉

映像情報メディア学会冬季大会講演予稿集(CD-ROM) 2017 ROMBUNNO.11C‐1 2017.11

J-GLOBAL
Efficient producer mobility support in named data networking

Siran Zhang, Zhiwei Yan, Yong-Jin Park, Hidenori Nakazato, Wataru Kameyama, Kashif Nisar, Ag Asri Ag Ibrahim

IEICE Transactions on Communications E100B ( 10 ) 1856 - 1864 2017.10

　View Summary

Named Data Networking (NDN) is a promising architecture for the future Internet and it is mainly designed for efficient content delivery and retrieval. However, producer mobility support is one of the challenging problems of NDN. This paper proposes a scheme which aims to optimize the tunneling-based producer mobility solution inNDN. It does not require NDN routers to change their routing tables (Forwarding Information Base) after a producer moves. Instead, the Interest packet can be sent from a consumer to the moved producer using the tunnel. The piggybacked Data packet which is sent back to the consumer will trigger the consumer to send the following Interest packets through the optimized path to the producer. Moreover, a naming scheme is proposed so that the NDN caching function can be fully utilized. An analysis is carried out to evaluate the performance of the proposal. The results indicate that the proposed scheme reduces the network cost compared to related works and supports route optimization for enhanced producer mobility support in NDN.

DOI
スパースコーディングによる画像特徴記述と複数人物追跡への応用

澁谷直大, LI Yankun, 諸井康平, 亀山渉, 井須芳美, 杉本和夫, 関口俊一, 関口俊一

電子情報通信学会大会講演論文集(CD-ROM) 2017 ROMBUNNO.D‐11‐32 2017.03

J-GLOBAL
ディープラーニングによる瞳孔径の対光反射補正方式に関する検討

加藤敦士, 菅沼睦, 亀山渉

電子情報通信学会大会講演論文集(CD-ROM) 2017 ROMBUNNO.H‐2‐12 2017.03

J-GLOBAL
Proactive Content Caching for Mobile Video Utilizing Transportation Systems and Evaluation Through Field Experiments

Kenji Kanai, Takeshi Muto, Jiro Katto, Shinya Yamamura, Tomoyuki Furutono, Takafumi Saito, Hirohide Mikami, Kaoru Kusachi, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 34 ( 8 ) 2102 - 2114 2016.08

　View Summary

In order to provide high-quality and highly reliable video delivery services for mobile users, especially train passengers, we propose a proactive content caching scheme that uses transportation systems. In our system, we place content servers with cache capability [e.g., content centric networking/named data networking (CCN/NDN)] in every train and station. Video segments encapsulated by MPEG-Dynamic Adaptive Streaming over HTTP (MPEG-DASH) are distributed and pre-cached by the station servers before the trains arrive at the stations. The trains receive content via high-speed wireless transport, such as wireless LANs or millimeter waves, when they stop at the stations. We developed prototype systems based on hypertext transfer protocol and CCN/NDN protocol, evaluate their performance through two field experiments that uses actual trains, and compare with traditional video streaming over cellular networks. Such evaluations indicate that our system can achieve high-quality video delivery without interruption for up to 50 users simultaneously.

DOI
B-6-133 Push-type Content Delivery over 5G Mobile Communication System in NDN

Maeda Yasuaki, Yan Zhiwei, Park Yong-Jin, Kameyama Wataru, Nisar Kashif, Ibrahim Ag, Asri Ag, Hijiazi Moh, Hanafi Ahmad, Kim Heedon

Proceedings of the IEICE General Conference 2016 ( 2 ) 133 - 133 2016.03

CiNii
H-2-4 Measuring Time Optimization on Pupillary Light Reflex Compensation

Nagai Ryoka, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 2016 266 - 266 2016.03

CiNii
H-2-12 Music Classification based on Emotion Similarity using Background Activity

Miki Ryosuke, Kameyama Wataru, Suganuma Mutsumi

Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 2016 274 - 274 2016.03

CiNii
H-2-13 A Consideration on Usage of Nasal Skin Temperature for Video Viewer's Emotion Estimation

Hashimoto Ryohei, Fu In, Suganuma Mutsumi, Kameyama Wataru, Clippingdale Simon

Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 2016 275 - 275 2016.03

CiNii
H-2-14 A Consideration on the Classification of Video Viewer's Emotion Using Multimodal Biosignals

Fu In, Hashimoto Ryohei, Suganuma Mutsumi, Kameyama Wataru, Clippingdale Simon

Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 2016 276 - 276 2016.03

CiNii
H-2-15 A Consideration on Estimation of Listeners' Impressions on Music using Background Activity

Yoshida Masataka, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 2016 277 - 277 2016.03

CiNii
D-11-48 Comparison Analysis between Different-block-sized Sparse Coding Bases of Still Images

Kanda Akihiro, Kameyama Wataru, Sekiguti Shunichi

Proceedings of the IEICE General Conference 2016 ( 2 ) 48 - 48 2016.03

CiNii
D-4-10 A Proposal of Abnormality Detection Method in Plant using Sparse Coding

Nagashima Motoki, Suganuma Mutsumi, Kameyama Wataru, Tezuka Tomoyuki, Imanari Hiroyuki, Shinonaga Hiroyuki, Nitta Isoko

Proceedings of the IEICE General Conference 2016 ( 1 ) 29 - 29 2016.03

CiNii
B-11-27 Evaluation of Pupil Size against Video Quality

Nishida Chie, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2016 ( 2 ) 407 - 407 2016.03

CiNii
B-11-28 Evaluation of Pupil Size and Background Activity against Initial Video-playing Delay

Kawauchi Akihiko, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2016 ( 2 ) 408 - 408 2016.03

CiNii
Content oriented surveillance system based on information-centric network

Xin Qi, Zheng Wen, Toshitaka Tsuda, Wataru Kameyama, Jiro Katto, Takuro Sato, Kouichi Shibata

2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings 2016.01

　View Summary

© 2016 IEEE. Urban surveillance systems are being applied in a rapid pace with mature but inefficient solutions. The inefficiency is revealed with two aspects, too concentrated bandwidth and processing requirement. To solve this problem, we proposed a content oriented surveillance system based on Information-Centric Network. However, we can't simply replace TCP/IP streaming structure with named contents streaming structure because it can't improve the surveillance system's efficiency enough. In this paper, we took the ICN network's profits even further with the named contents. Instead of streaming live video to the central data center and processing multiple data stream in the same time, we have designed the nodes to process the captured raw data and produce objective contents for the central data center. With the extremely size difference in raw data and actual valued contents from it, we could apply the method in investigating area people traffic conditions and even in disaster and anti-terrorism scenarios. There was a field experiment performed to evaluate tourists' densities and dressing habits during winter season of March. The experiment expressed the benefits of our system and compared our method with traditional surveillance systems in saving network bandwidth and functionalities.

DOI
A Consideration on Content Naming Scheme in ICN

亀山渉, 朴容震

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 115 ( 368 ) 107 - 112 2015.12

CiNii
A-15-11 Visualization of Image Similarity Based on Eye Movement and Pupil Size

Nishiguchi Yuki, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2015 201 - 201 2015.02

CiNii
BS-8-5 Relationship Analysis between User Response and Category of Audiovisual Sequences using Pupil Size and Background Activity

Inutsuka Misaki, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2015 ( 2 ) "S - 162"-"S-163" 2015.02

CiNii
BS-8-4 Pupillary Light Reflex Compensation using a Variety of Brightness Patterns

Egawa Mae, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2015 ( 2 ) "S - 160"-"S-161" 2015.02

CiNii
BS-8-3 Characteristic Analysis of Pupil Size, Gaze and Blink for "Boringness" Detection while Watching Video

Kameda Takayuki, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2015 ( 2 ) "S - 158"-"S-159" 2015.02

CiNii
B-6-90 Content Offloading System over CCN Architecture Utilizing Transportation Systems

Kisara Hiroto, Kurokawa Sayo, Kanai Kenji, Katto Jiro, Tsuda Toshitaka, Kameyama Wataru

Proceedings of the IEICE General Conference 2015 ( 2 ) 90 - 90 2015.02

CiNii
On Applying Sparse Coding to Classification of Users' Desired Images with Eye Movements

西口侑希, 菅沼睦, 亀山渉

IPSJ SIG Notes 2015 ( 1 ) 1 - 6 2015.02

　View Summary

Digital image consumption has grown so rapidly, and image retrieval is expected to be more improved. To bridge the semantic gap which is an underlying problem of image retrieval, relevance feedback can be one of the solutions. Relevance feedback with eye-movements allows users to give their feedback just by watching the images and, moreover may make it possible to select the images even though they don't recognize what they want. Feedback with eye-movements demands the reasonable classification of users' desired images with eye-movements. We have already reported the result of a SVM trained with the features extracted from eye-movements and pupil size toward each image. In this report, it is shown that we improve the classification performance with sparse coding.

CiNii
Performance evaluation of proactive content caching for mobile video through 50-user field experiment

Kenji Kanai, Takeshi Muto, Jiro Katto, Wataru Kameyama, Yong Jin Park, Takuro Sato, Takafumi Saito, Hirohide Mikami, Kaoru Kusachi, Toshitaka Tsuda, Shinya Yamamura, Tomoyuki Furutono

2015 IEEE Globecom Workshops, GC Wkshps 2015 - Proceedings 2015.01

　View Summary

© 2015 IEEE. Providing robust content delivery service, such as Video on Demand, with efficient wireless resource usage is important for mobile users. To achieve this, we have proposed a proactive content caching scheme utilizing transportation systems (e.g., train.) Because our previous prototype is immature and has a scalability issue, in this paper, we introduce efficient transmission mechanism of Interest messages in order to improve throughput efficiency in mobile NDN. We develop two prototypes based on HTTP and NDN and then evaluate prototype performance by performing larger-scale field experiments on actual commercial railroad line. Evaluations conclude that our system can achieve high efficient content transfer and fully utilize wireless network bandwidth. Therefore, our system can provide high-quality video streaming for up to 50 users simultaneously.

DOI
Two phases outlier detection in different subspaces

Zhana Bao, Wataru Kameyama

International Conference on Information and Knowledge Management, Proceedings 2014- ( November ) 57 - 62 2014.11

　View Summary

Mining high dimensional outliers is not fully resolved for its dimensional particularity. The existing full space based methods can find distinct outliers and neglect those hidden in some subspaces. Subspace based approaches can detect most outliers that are apparent in low dimensional spaces, while missing the invisible outliers in subspaces. This paper proposes a novel two-phase inspection model. The first phase measures neighbor's density in subspaces to find low dimensional outliers. The second phase evaluates deviation degree of neighbors in connected subspaces. The undiscovered outliers appear a fast dispersion and scatter more than its neighbors. We analysis two-phase results statistically, and merge into one score for each object. The outliers are expressed with top score objects. The evaluation on synthetic and real data sets shows that our proposal outperform state of the art algorithms in high dimensional outlier issue.

DOI
Proactive Content Caching and Delivery Scheme utilizing Transportation Systems

Sato Takuro, Park Yong Jin, Tsuda Toshitaka, Goto Shigeki, Tanaka Yoshiaki, Kameyama Wataru, Shimamoto Shigeru, Katto Jiro, Ichino Masatsugu

IEICE technical report 114 ( 252 ) 93 - 97 2014.10

　View Summary

In the future, network traffic will be increasing according to demand of big traffic of moving picture on the mobile communication environment. For processing large traffic, virtualized network based on SDN (Software defined Network) has been provided for purpose of cloud networking as CDN (Contents Delivery Network). On the other hand, the ICN (Information Centric Network) has been proposing as IP independent network which isn't based on IP address. And it has been discussing about advantages compared to the IP network. This paper shows the experimental results of Proactive Content Caching and Delivery Scheme utilizing Transportation Systems. This research has been supported by SCOPE organized by Ministry of Internal Affairs and Communications.

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Packet Aggregation and Segregation Mechanism over Named Data Networking

HARADA Sho, YAN Zhiwei, PARK Yong-Jin, KAMEYAMA Wataru

IEICE technical report 114 ( 252 ) 99 - 103 2014.10

　View Summary

Named Data Networking (NDN) is a clean slate future Internet architecture optimized for today's demand, which is to retrieve contents efficiently. The Internet is mainly used to retrieve contents in terms of traffics. In NDN, communications can be done based on the names of contents instead of IP addresses. The name-based routing and in-network caching functions of NDN optimize communications. Users can retrieve content only by sending a request packet, which includes the requested content name. However, when a user retrieves many contents or many users request large content at the same time, the user needs to send many number of request packets. It may cause network congestions. In this paper, we propose a mechanism that enables users to request contents only by sending one aggregated request packet and that the contents can be aggregated in networks, which can reduce the network loads.

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J-026 A Consideration on Pupillary Light Reflex Model using Pupil Size Averaging.

Kuroda Masafumi, Nishiguchi Yuki, Nagashima Motoki, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集 13 ( 3 ) 319 - 320 2014.08

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H-035 Classification of User's Desired Images Using Dispersion of Fixation Occurrence

Nishiguchi Yuki, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集 13 ( 3 ) 145 - 146 2014.08

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A Consideration on Music Classification Using Background Activity of Brain

Miki Ryosuke, Kameyama Wataru, Suganuma Mutsumi

Technical report of IEICE. HCS 114 ( 67 ) 211 - 216 2014.05

　View Summary

"Genre" is one of the music metadata. Generally, music genre is used to classify similar music tracks reflecting their melodies and impressions. However, genre doesn't always match user's impression of music. In order to make the genre more effective as one of the metadata, a classification method, which reflects user's impression, is needed. In this paper, we discuss a method of music classification by using background activity of brain.

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A Consideration on Music Classification Using Background Activity of Brain

Miki Ryosuke, Kameyama Wataru, Suganuma Mutsumi

Technical report of IEICE. HIP 114 ( 68 ) 211 - 216 2014.05

　View Summary

"Genre" is one of the music metadata. Generally, music genre is used to classify similar music tracks reflecting their melodies and impressions. However, genre doesn't always match user's impression of music. In order to make the genre more effective as one of the metadata, a classification method, which reflects user's impression, is needed. In this paper, we discuss a method of music classification by using background activity of brain.

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Performance Validation of Proactive Content Caching utilizing Transportation Systems by Field Experiment

KANAI Kenji, MUTO Takeshi, KISARA Hiroto, KATTO Jiro, TSUDA Toshitaka, KAMEYAMA Wataru, Park Yong-Jin, SATO Takuro

IEICE technical report. MoNA, Mobile network and applications 114 ( 31 ) 191 - 196 2014.05

　View Summary

We propose proactive content caching scheme utilizing transportation systems for robust video streaming with efficient wireless resources usage. In this paper, we develop a prototype system and evaluate its performances by using actual train vehicles and computer simulations. Evaluations conclude that our system can achieve higher-speed and highly-reliable video streaming rather than traditional CDN scenarios using cellular networks.

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Performance Validation of Proactive Content Caching utilizing Transportation Systems by Field Experiment

Kenji Kanai, Takeshi Muto, Hiroto Kisara, Jiro Katto, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

IPSJ SIG Notes 2014 ( 30 ) 1 - 6 2014.05

　View Summary

We propose proactive content caching scheme utilizing transportation systems for robust video streaming with efficient wireless resources usage. In this paper, we develop a prototype system and evaluate its performances by using actual train vehicles and computer simulations. Evaluations conclude that our system can achieve higher-speed and highly-reliable video streaming rather than traditional CDN scenarios using cellular networks.

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Performance Validation of Proactive Content Caching utilizing Transportation Systems by Field Experiment

Kenji Kanai, Takeshi Muto, Hiroto Kisara, Jiro Katto, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

IPSJ SIG technical reports 2014 ( 30 ) 1 - 6 2014.05

　View Summary

We propose proactive content caching scheme utilizing transportation systems for robust video streaming with efficient wireless resources usage. In this paper, we develop a prototype system and evaluate its performances by using actual train vehicles and computer simulations. Evaluations conclude that our system can achieve higher-speed and highly-reliable video streaming rather than traditional CDN scenarios using cellular networks.

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D-4-10 Comparison of Word-Similarity Evaluation Methods using Japanese WordNet in Image Retrieval System

Chen Feng, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 ( 1 ) 33 - 33 2014.03

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D-12-15 Pupil Size Based Features for Image Classification Using Eye Movements

Nishiguchi Yuki, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 ( 2 ) 90 - 90 2014.03

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A-15-11 A Consideration on Pupillary Light Reflex Model and Personal Fluctuation of Pupil Size

Ri Haku, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 182 - 182 2014.03

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A-15-12 Relationship between Comic Reader's Eye-blink and Pupil Size Variation

Matsui Ken, Suganuma Mutsumi, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 183 - 183 2014.03

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A-15-22 Preliminary Analysis on Estimating Users' Surprise or Confusion Based on Background Activity

Suganuma Mutsumi, Ishiguro Makoto, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 193 - 193 2014.03

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B-6-39 Performance Evaluation of Proactive Delivery Scheduling and its Multi-channel Extension

Kanai Kenii, Katto Jiro, Tsuda Tositaka, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 ( 2 ) 39 - 39 2014.03

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B-6-94 Proactive Delivery Scheduling in the Content Delivery System utilizing Transportation Systems

Katto Jiro, Kanai Kenji, Tsuda Toshitaka, Kameyama Wataru

Proceedings of the IEICE General Conference 2014 ( 2 ) 94 - 94 2014.03

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Proactive Content Caching utilizing Transportation Systems and its Evaluation by Field Experiment

Kenji Kanai, Takeshi Muto, Hiroto Kisara, Jiro Katto, Toshitaka Tsuda, Wataru Kameyama, Yong-Jin Park, Takuro Sato

2014 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM 2014) 1382 - 1387 2014

　View Summary

Providing robust content delivery along with efficient wireless resource usage is important for next generation wireless networks. To achieve this, we propose a proactive content caching scheme utilizing transportation systems, especially trains. In our system, we place content servers with CCN capability to every train and station. Segments of video contents are pre-cached by the station servers before trains arrive at stations. Trains receive the contents via high-speed wireless transport while they stop at the stations. We develop a prototype system based on IP and CCN Hybrid protocols. We evaluate its performance by field experiment and compare with traditional CDN scenarios using cellular networks. Evaluations conclude that our system can achieve high-speed and high-reliable video delivery without freezing.

DOI
A Consideration on Music Classification Using Background Activity of Brain

三木亮祐, 亀山渉, 菅沼睦

ヒューマンインタフェース学会研究報告集 16 211 - 216 2014

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Development and Evaluation of Regional Information Platform and Information Distribution System : For Tourism Promotion and Disaster Prevention

MIYOSAWA Tadashi, HIROSE Hiroo, TSUCHIYA Takeshi, KAMEYAMA Wataru, KOYANAGI Keiichi, YAMAMOTO Hisashi, KARASAWA Hideyasu, KARASAWA Hidenaga, MASUZAWA Kenichi

IEICE technical report. Image engineering 113 ( 340 ) 135 - 140 2013.12

　View Summary

As the main focus of this research, we constructed an experimental website for the communication broadcasting cooperative transmission system and developed a regional information platform. In addition, we carried out a small-scale demonstration experiment at the Chino station.

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Development and Evaluation of Regional Information Platform and Information Distribution System - For Tourism Promotion and Disaster Prevention -

三代沢正, 広瀬啓雄, 土屋健, 亀山渉, 小柳惠一, 山本永, 唐澤英安, 唐澤英長, 増沢健一

研究報告オーディオビジュアル複合情報処理（AVM） 2013 ( 25 ) 1 - 6 2013.11

　View Summary

地域観光振興と防災に向け放送と通信を連携させた情報配信システムの開発と実証実験を行った。地域情報プラットフォームの開発と放送通信連携配信システムの実験サイトを構築し、茅野駅周辺における実証実験を行うことができたので、その報告を行う。As the main focus of this research, we constructed an experimental website for the communication broadcasting cooperative transmission system and developed a regional information platform. In addition, we carried out a small-scale demonstration experiment at the Chino station.

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J-006 Comparison of In-Vehicle Navigation Guidance by Fixed-Spot, Voice and Gazing-Point

Almogbel Mohammad Abdullah, Sriprasertsuk Pao, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集 12 ( 3 ) 379 - 380 2013.08

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J-023 A Preliminary Study on Interest Level Estimation of Reading Comic using Reading Time of Each Page and Eyeblink

Matsui Ken, Suganuma Mutsumi, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集 12 ( 3 ) 429 - 430 2013.08

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J-024 A Preliminary Study on Discriminating Like and Dislike of Taste using EEG

Tai Bin, Sriprasertsuk Pao, Suganuma Mutsumi, Kameyama Wataru

情報科学技術フォーラム講演論文集 12 ( 3 ) 431 - 432 2013.08

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D-026 A Study on Audiovisual Content Retrieval System using WordNet and HBase Mapping

Chen Feng, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集 12 ( 2 ) 147 - 148 2013.08

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D-5-5 A Study on Audiovisual Content Retrieval System using WordNet

Chen Feng, Sriprasertsuk Pao, Kameyama Wataru

Proceedings of the IEICE General Conference 2013 ( 1 ) 45 - 45 2013.03

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A novel proposal for outlier detection in high dimensional space

Zhana Bao, Wataru Kameyama

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 7867 307 - 318 2013

　View Summary

Finding rare information behind big data is important and meaningful for outlier detection. However, to find such rare information is extremely difficult when the notorious curse of dimensionality exists in high dimensional space. Most of existing methods fail to obtain good result since the Euclidean distance cannot work well in high dimensional space. In this paper, we first perform a grid division of data for each attribute, and compare the density ratio for every point in each dimension. We then project the points of the same area to other dimensions, and then we calculate the disperse extent with defined cluster density value. At last, we sum up all weight values for each point in two-step calculations. After the process, outliers are those points scoring the largest weight. The experimental results show that the proposed algorithm can achieve high precision and recall on the synthetic datasets with the dimension varying from 100 to 10000. © Springer-Verlag 2013.

DOI
I-036 Personalized TV-program Recommendation using Users' Viewing Histories and Time-Frames

DINH Quoc Hung, SRIPRASERTSUK Pao, KAMEYAMA Wataru, FUKUDA Kenji

情報科学技術フォーラム講演論文集 11 ( 3 ) 331 - 332 2012.09

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K-007 Efficient Scale Database Construction for Scale Filtering in SURF-based AR Application

Dang Hoang Anh, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集 11 ( 3 ) 547 - 548 2012.09

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K-054 Task Level SURF Keypoint Extraction Parallelization in AR Application

Dang Hoang Anh, Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集 10 ( 3 ) 839 - 840 2011.09

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B-7-5 A Presentation Control Method for Fusion of Broadcasting and Communications

Ohmata Hisayuki, Otsuki Kazuhiro, Fujii Arisa, Majima Keigo, Inoue Tomoyuki, Kameyama Wataru

Proceedings of the IEICE General Conference 169 169 - 169 2011

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7-3 On Consideration of Information Recommendation Based on Content Attributes and User Attributes

SEKI Akiko, SRIPRASERTSUK Pao, SUGANUMA Mutsumi, KAMEYAMA WSataru

PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION 2011 ( 0 ) 7 - 3-1 2011

　View Summary

In this paper, we propose a method of evaluating the personalized value of contents for content recommendation systems. In the proposed system, the user's interest from user's vital reaction and viewing history is dynamically detected and analyzed to define the value of contents based on both user-metadata and content-metadata.

DOI CiNii
7-4 Preliminary Study on Estimating Degree of Interest for Audiovisual Information Using User's Bio Signals

SUGANUMA Mutsumi, KAWAMURA Eri, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION 2011 ( 0 ) 7 - 4-1 2011

　View Summary

In this study, we would report the result of preliminary study on measuring the attitude against video content by user's bio-signals. In present study, we have measured the eye information and the background brain activity of viewers during watching video content. We would discuss the possibility of user's bio-signals for user's attitude estimation.

DOI CiNii
2009 ITE Winter Annual Convention

Wataru Kameyama

ITEJ 64 ( 4 ) 538 - 540 2010.04

DOI CiNii
A-15-1 Evaluation of Video Summarization Based On Bio-Signals

Ono Yuya, Ong Kok-Meng, Kameyama Wataru

Proceedings of the IEICE General Conference 2010 183 - 183 2010.03

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A-15-2 Consideration of Human Gaze Prediction in Video Shot Using Saliency Map and Face Detection

Ong Kok-Meng, Kameyama Wataru

Proceedings of the IEICE General Conference 2010 184 - 184 2010.03

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4-8 Personalization of Video Content Features and its Application

ONG Kok-Meng, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE ANNUAL CONVENTION 2010 ( 0 ) 4 - 8-1-_4-8-2_ 2010

　View Summary

In this paper, we propose to extract personalized video features based on the viewer's interest. The viewer's interest toward the video content is modeled in real time by monitoring their pupil size, gazing point and heart rate. The experimental results show that the video summary generated using weighted video features achieves higher precision and recall ratios for video with high narration nature if compared to video summary generated by video features without personalized weight prediction.

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J-007 Analaysis of Human Gaze in Videos with Human Face : Comparison of Gaze Distance with Detected Face and Motion Center

Ong Kok-Meng, Kameyama Wataru

情報科学技術フォーラム講演論文集 8 ( 3 ) 399 - 400 2009.08

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N-009 Implementation and Evaluation of Authoring and Rights Processing System for Secondary Use of Digital Contents

WANG Yuan-Kang, SEKI Akiko, KAMEYAMA Wataru

情報科学技術フォーラム講演論文集 8 ( 4 ) 501 - 502 2009.08

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Evaluation of Video Abstraction Based on Pupil Size and Gazing Point

ONG Kok-Meng, KAMEYAMA Wataru

IEICE technical report 109 ( 83 ) 39 - 44 2009.06

　View Summary

With the exponential increase of digital video volume, it is crucial to have a system to automatically generate video abstract that would enable viewers to skim the video archives efficiently. In this paper, we propose to generate video abstract based on viewers' perception. The viewers' perception is obtained by modeling their pupil sizes and gazing points while watching the video. An Attention Fusion Function is applied to the models to obtain the final attention curve, and video abstracts are created. Based on subjective evaluation, the generated video skims are rated 67.38 efficiently representing the original video, and an average score of 56.10 for the automatically generated key-frames.

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Construction of a digital archive for "Nippon News" and considerations for archive management

守屋豊, 亀山渉

IEICE technical report 109 ( 74 ) 9 - 15 2009.06

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Construction of a Digital Archive for "Nippon News" and Considerations for Archive Management

MORIYA Yutaka, KAMEYAMA Wataru

研究報告電子化知的財産・社会基盤（EIP） 2009 ( 2 ) 1 - 7 2009.05

　View Summary

国立歴史民俗博物館では現在、共同研究『ニュース映画の研究資源化ならびに活用方法の確立に関する研究』において、川崎市市民ミュージアムの協力の下、同ミュージアムが所蔵する「日本ニュース映画」（ 1946 年～1951 年:第 1 号～第 312 号）のナレーションのテキスト化を行い、ニュース映画の歴史資料化の方法を模索している。筆者らは、その一環として全文のテキストデータについて、歴史研究に資するデータベースを構築するためのシステム開発を行っている。今回は構築したシステムのアーキテクチャついて、他の先駆的なアーカイブシステムとの比較を試みた。また、完成したプロトタイプシステムを実際に歴史学者に利用してもらい、彼らから寄せられた要求事項をもとに評価と今後の設計方針について検討を行う。We have been conducting a joint research project about "Using News Movies for Historical Study" with National Museum of Japanese History (NMJH) in cooperation with Kawasaki City Museum. In this research, NMJH is presently transcribing the narration from "Nippon News" (from 1946 to 1951 and numbered 1 through 312) and particularly exploring ways to transform the films into a database. To evaluate structure of our proposed system, we have examined it in comparison with other prominent archive systems. Additionally, we have historians using the completed prototype system in order to take into consideration their actual needs for future improvements.

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D-9-26 Evaluation on Email Classification System by Importance

Chiang Peilin, Kameyama Wataru

Proceedings of the IEICE General Conference 2009 ( 1 ) 140 - 140 2009.03

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7-6 Video Summarization Utilizing Human Affect : Technique based on Pupil and Gaze

ONG Kok-Meng, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE ANNUAL CONVENTION 2009 ( 0 ) _7 - 6-1_-_7-6-2_ 2009

　View Summary

Video Summarization technique that could automatically generate abstract based on human perception is becoming important in order to facilitate the human perception based skimming of the rapid-growing digital video archives. In this paper, an attention model is proposed from the viewers' pupil and gaze. A fusion function that satisfies the 'attention property' of human is applied to produce the final attention model, which forms the basis for the generation of key-frames and video skims.

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2009 ITE Annual Convention

Kameyama Wataru

ITEJ 63 ( 12 ) 1790 - 1794 2009

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B-021 A Basic Consideration on Similarity Discovery Between Metadata Schema of Museum Information

Murata Tomohiro, Akimoto Ryoji, Kameyama Wataru

情報科学技術フォーラム講演論文集 7 ( 1 ) 157 - 158 2008.08

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F-035 Evaluation Analysis of a Game-based and Instructional Designed Mobile Learning System

Khalid Mohd, Firdaus Md, Kameyama Wataru

情報科学技術フォーラム講演論文集 7 ( 2 ) 395 - 396 2008.08

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N-020 A Proposal of Contents Distribution Model and Analysis of Illegal Contents Distribution on the Small-World Network

Sriprasertsuk Pao, Kameyama Wataru

情報科学技術フォーラム講演論文集 7 ( 4 ) 343 - 344 2008.08

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N-021 A Proposal on Right Expression Method with Consideration of Content's Spatiotemporal information

WANG Yuan-Kang, SEKI Akiko, KAMEYAMA Wataru

情報科学技術フォーラム講演論文集 7 ( 4 ) 345 - 346 2008.08

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A-15-19 Video Digesting Method based on User's Interest

OWA Daisuke, Ong Kok Meng, KAMEYAMA Wataru, TOMINAGA Hideyoshi

Proceedings of the IEICE General Conference 2008 270 - 270 2008.03

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BP-5-1 Vision for Future Mobile Multimedia : 10th Anniversary of the Technical Committee on MoMuC

富永英義, 赤岩芳彦, 服部武, 小牧省三, 薮崎正実, 亀山渉, 大矢智之

Proceedings of the IEICE General Conference 2008 ( 1 ) "SS - 21"-"SS-22" 2008.03

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BP-5-6 Perspective on Multimedia Information Processing Technologies

Kameyama Wataru

Proceedings of the IEICE General Conference 2008 ( 1 ) "SS - 27"-"SS-28" 2008.03

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22-4 Quantifying Human Emotion during Video Watching based on Pupil Size and Gazing Point

ONG Kok-Meng, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE ANNUAL CONVENTION 2008 ( 0 ) _22 - 4-1_-_22-4-2_ 2008

　View Summary

In this paper, we propose to quantify human emotion response by analyzing the viewers' pupil size and gazing point during video watching. Our experiment results show that it is a feasible quantitative-objective representation of viewer's feeling along the video content.

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Video summarization based on user's view information

応和大輔, 亀山渉, 富永英義

ITE technical report 31 ( 64 ) 105 - 110 2007.12

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Foreword

KAMEYAMA Wataru

IPSJ Magazine 48 ( 10 ) 2007.10

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Development and the evaluation of the education contents search system which uses the multilingual ontology

CHIBA Eiichi, NODONO Kouichi, UEDA Yukihiro, KAWAMORI Masahito, KAMEYAMA Wataru, FURUYA Kazuyuki, HARAYAMA Shouichi

IPSJ SIG Notes 2007 ( 101 ) 31 - 36 2007.10

　View Summary

As means to minimize gaps of educational information/contents among the Asian regions, a demand for long-distance education is rising. However, language and culture differences cause serious problems to apply the education style widely in Asian countries. Therefore we developed the platform for searching education contents without being conscious of language and culture differences and evaluated its effectiveness.

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B-035 A Study On Similarity Between Metadata Schema Based on Museum

Akimoto Ryoji, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 6 ( 1 ) 161 - 162 2007.08

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F-043 USING MMOG TO PROMOTE EFFECTIVE INSTRUCTIONAL DESIGN IN MOBILE LEARNING

Khalid Mohd, Firdaus Md, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 6 ( 2 ) 443 - 444 2007.08

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I-044 Semi-automatic Annotation of Personal Digital Photographs with W6H2 Metadata

SARIN Supheakmungkol, NAGAHASHI Toshinori, MIYOSAWA Tadashi, KAMEYAMA Wataru

情報科学技術フォーラム一般講演論文集 6 ( 3 ) 297 - 298 2007.08

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M-041 A Proposal on SIP Based Navigation System for Hospital

Kabir Md. Humayun, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 6 ( 4 ) 227 - 228 2007.08

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N-030 A Proposal on Rights Management for Content Editor Achieving Right Inheritance of Derived Contents

WANG Yuan-Kang, Seki Akiko, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 6 ( 4 ) 415 - 416 2007.08

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A Video Summarization Method Based on the Film Grammar and Subjective Rating

NI Chanbin, NOMURA Toshio, WATANABE Shuichi, OKADA Hiroyuki, KAMEYAMA Wataru

IPSJ SIG Notes 2007 ( 22 ) 13 - 18 2007.03

　View Summary

Behind the fact that we understand not only the concept of objects appearing in a movie, but also the semantics that film makers intent to present, there is a certain relation between "the Film Grammar" and Audience's media literacy. In this paper, we propose a video summarization method based on the film grammar and subjective rating, by mapping visual characteristic parameters extracted from compressed video to subjective rating. Additionally, in our prototype system, a proper play-rate is automatically generated, without any knowledge of the content.

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A basic consideration on rights inheritance of processing derived work by content editor

王元綱, 関亜紀子, 亀山渉

ITE technical report 31 ( 1 ) 99 - 102 2007.01

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B_026 On Compound Metadata Schema Processing for Museum

AKIMOTO Ryoji, KAMEYAMA Wataru

情報科学技術フォーラム一般講演論文集 5 ( 1 ) 127 - 128 2006.08

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N_015 Implementation and Evaluation of Rights-inheritance Processing System for Content Circulation

Seki Akiko, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 5 ( 4 ) 353 - 354 2006.08

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J_056 SemiANNOTATE : A Semi-automatic Approach to Personal Photo Album Annotation Based on Public and Personal Information

SARIN Supheakmungkol, NAGAHASHI Toshinori, MIYOSAWA Tadashi, KAMEYAMA Wataru

情報科学技術フォーラム一般講演論文集 5 ( 3 ) 315 - 316 2006.08

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Semi-automatic Metadata generation for Electric Photo Album

MIYOSAWA Tadashi, NAGAHSHI Toshinori, SARIN Supheakmungkol, KAMEYAMA Wataru

IEICE technical report 106 ( 144 ) 19 - 24 2006.07

　View Summary

The advancement of technology have been making digital cameras more and more affordable for everyone. Digital photographs have grown exponentially this last decade and have been making it beyond the ability of people to manage their own photo collections. We propose a personal photo library system with built-in semi-automatic annotation engine. Photos with geo-referential (GPS) information are the current tendency. Using the exact location information given by GPS together with timestamp ,our novel engine semi-automatically generate contextual meta-data for each photo from different sources of information namely the public news and user's personal information. We have designed, implemented and tested our system and the result show that our system significantly helps users to annotate, search, browse their digital photo album.

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Semi-automatic Metadata generation for Electric Photo Album

MIYOSAWA Tadashi, NAGAHSHI Toshinori, SARIN Supheakmungkol, KAMEYAMA Wataru

電子情報通信学会技術研究報告. WIT, 福祉情報工学 106 ( 144 ) 19 - 24 2006.06

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Copyright and lnformation Processing－Mini-Panel Discussion－

KAMEYAMA Wataru

IPSJ SIG Notes 2006 ( 65 ) 17 - 18 2006.06

　View Summary

For processing various rights information like copyright, the support of information processing technologies is essential. However, the recent digital revolution has being bringing the remarkable tense between rights and information processing technologies. Therefore, focusing on the conflict between technologies and laws in particular, we conduct a panel discussion in order to reconsider the relationship between rights and information processing. In addition, we also reconsider and reconfirm the role of EIP as it is to be.

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B-15-15 Topology-aware Overlay Routing for Service Discovery in Mobile Ad-hoc Networks

JIN Ling, KAMEYAMA Wataru

Proceedings of the IEICE General Conference 2006 ( 1 ) 577 - 577 2006.03

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7-2 A Semi-automatic Metadata Generation for Electric Photo Album and Evaluation

MIYOSAWA Tadashi, NAGAHASHI Toshinori, SARIN Supheakmungkol, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION 2006 ( 0 ) _7 - 2-1_ 2006

　View Summary

We propose a personal photo library system with built-in semi-automatic annotation engine. Photos with geo-referential (GPS) information are the current tendency. Using the exact location information given by GPS together with timestamp, our novel engine semi-automatically generate contextual meta-data for each photo from different sources of information namely the public news and user's personal information.

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N-031 A proposal on Rights Inheritance Processing and Management Model for Content Circulation

Seki Akiko, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 4 ( 4 ) 369 - 370 2005.08

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J-021 Implementation and Evaluation of the Automatic Criticism-Metadata Generation and the Distribution System for Digital Contents

Ookatsu Takumi, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 4 ( 3 ) 225 - 226 2005.08

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On the Metadata Automatic Generation and the Distribution System for Digital Contents Distribution

OOKATSU Takumi, KAMEYAMA Wataru

IEICE technical report 105 ( 164 ) 65 - 70 2005.06

　View Summary

Because of the starting of terrestrial digital broadcast in December 2003 and the rapid wide-spread of broadband infrastructures, digital contents have been distributed and re-distributed among us again and again. Various kinds of researches in this field have being done actively by many academic and industrial researchers. However, until now consumers are still suffering from the lack of efficient methods to acquire their desired contents. In order to solve such a problem, we have proposed a novel information distribution system focused on word-of-mouth communication. Word-of-mouth information can be considered as evaluated information by other users. In this paper, the proposed system utilizing weblog to distribute word-of-mouth information as well as its implementation are introduced.

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Implementation and Experimental Results of Automatic Metadata-Generating System for TV-Programs Using Internet Chat System

DAIKOKU Taihei, ISHIZIMA Kenitiro, KATO Tomonori, DOI Kiyoyuki, KAMEYAMA Wataru

IPSJ SIG Notes 2005 ( 23 ) 73 - 78 2005.03

　View Summary

Nowadays, the convergence of broadcasting and telecommunication worlds is progressing, as well as the amount of digital contents is increasing. In this circumstance, it is required to utilize the metadata to search a program among a great amount of digital contents. In this paper, we propose a metadata-generation method of TV programs from TV viewers' inputs using the Internet chat system. Furthermore its implementation and experimental results are also discussed, and its evaluation is also shown.

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B-21-41 On Dynamic Selection of Reactive Routing Protocols for Wireless Ad-hoc Networks

Murayama Mai, Kameyama Wataru

Proceedings of the IEICE General Conference 2005 ( 2 ) 630 - 630 2005.03

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D-035 On an Improved Method Extracting Time-based keywords from Viewers' Input Information of TV Program

DAIKOKU Taihei, KATO Tomonori, DOI Kiyoyuki, KAMEYAMA Wataru

情報科学技術フォーラム一般講演論文集 3 ( 2 ) 81 - 82 2004.08

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J-063 Consideration on Program Substitution for Program-Viewing Control System

Seki Akiko, Hosono Kazuki, Doi Kiyoyuki, Urano Joji, Miyabayashi Satoshi, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 3 ( 3 ) 345 - 346 2004.08

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J-064 Consideration on Vocabulary and Prototype Evaluation for Program Viewing Control

Hosono Kazuki, Seki Akiko, Doi Kiyoyuki, Urano Joji, Miyabayashi Satoshi, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 3 ( 3 ) 347 - 348 2004.08

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On Contents Distribution Business Modeling and its Evaluation

SEKI AKIKO, KAMEYAMA WATARU

IPSJ SIG Notes 23 23 - 30 2004.03

　View Summary

Digital Contents have came to be used in various places, and Digital Rights Management is becoming an important technology. So, many contents distribution business has implemented DRM System and DRM technology. Effective rights management can be attained by utilizing such DRM technology appropriately. However, selection or evaluation criteria of such technology do not exist today. Therefore, this paper analyzes each DRM processing in digital contents distribution and considers modeling of contents distribution business. And, it proposes the selection technique of DRM technologies, and the evaluation technique of DRM system.

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D-4-6 Efficient Content Retrieval Method Using Relation and Weighting.

Nonomura Takaki, Kameyama Wataru

Proceedings of the IEICE General Conference 2004 ( 1 ) 38 - 38 2004.03

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D-12-6 Video Classification Based on Video Descriptions

HATTORI Shinobu, KAMEYAMA Wataru, TOMINAGA Hideyoshi

Proceedings of the IEICE General Conference 2004 ( 2 ) 172 - 172 2004.03

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B-15-23 A Study on Resource Exchanging in Mobile Ad-hoc Networks using Broadcasting

Jin Ling, Kameyama Wataru

Proceedings of the IEICE General Conference 2004 ( 1 ) 816 - 816 2004.03

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Digital Broadcasting and Ubiquitous Communications

KANO Sadahiko, ENAMI Kazumasa, KAMISE Chiharu, KAMEYAMA Wataru, TAMURA Kazuto, TSUJIMURA Kiyoyuki, TOMINAGA Hideyoshi, MITSUHASHI Takamichi, ENDO Kaoru, ONIKI Hajime

情報通信学会誌 21 ( 2 ) 11 - 13 2004.01

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22-2 On an Efficient Keywords Extraction Method from Viewers' Inputs to a TV Program

DAIKOKU Taihei, KATO Tomonori, DOI Kiyoyuki, KAMEYAMA Wataru

PROCEEDINGS OF THE ITE ANNUAL CONVENTION 2004 ( 0 ) _22 - 2-1_-_22-2-2_ 2004

　View Summary

Nowadays, digital contents around us are increasing. So it is required to develop the method to extract the keywords from the viewers' inputs information to be used as metadata for further content retrieving by others. In this paper, a keyword extraction method from the TV program viewers is proposed.

DOI CiNii
22-3 On a Content-Viewing Control System Using Metadata

Hosono Kazuki, Seki Akiko, Doi Kiyoyuki, Urano Joji, Miyabayashi Satoshi, Kameyama Wataru

PROCEEDINGS OF THE ITE ANNUAL CONVENTION 2004 ( 0 ) _22 - 3-1_-_22-3-2_ 2004

　View Summary

We propose a content viewing control system with metadata, which provides benefit both for TV content viewers and content creators. This system makes new content viewing methods under the digital broadcasting environment. We introduce some of our detailed studies of this system that are SCI structure, SCI vocabulary, and substitutive pattern.

DOI CiNii
A Proposal on Support Environment for Open Source Users

CHANG Jin Yang, KAMEYAMA Wataru

情報処理学会論文誌プログラミング（PRO） 44 ( 4 ) 79 - 79 2003.03

　View Summary

The development cnviroment of Open Source has been improving by spread of the Internet. And then usable Open Source is increasing by it recently. However, the support environment with high accessibility for Open Source users (General user who is not a hacker) is very poor. It is dfficult to use developed Open Source in this situation, Here, we propose a new support environment for Open Source users by offering of potal web site which has high accessibility. The portal web site constructs it with three phases and user's evaluation. We set up physical environment and provide basic services such as User's registration, BBS (Bulletin Board System), File-Download-System, Mailing list and etc. at phase1. And then, we provide some original services such as Collection and distribution system of Open Source's information. Compatibility check function with other sources, Automatic delivery system of updated informations, Making and offering of operation manuals, The place of cooperation of developer and user and etc. at phase2 and phase3. We collect user's opinions and reflect it on site in each phase. As a result, we derive an ultimate support environment that user is requesting through this web site. We also report on the result in phase1 and the implementation plan of phase2.

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Automatic Tuning of User Preference Meta-Data for Fine Content Selection and its Evaluation

Kita Youji, Kameyama Wataru

Proceedings of the IEICE General Conference 2003 ( 1 ) 45 - 45 2003.03

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A Proposal on Supporting Environment Using Web Services for Open Source Users

Chang Jinyang, Kameyama Wataru

Proceedings of the IEICE General Conference 2003 ( 1 ) 143 - 143 2003.03

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ANALYSIS OF FACE IMPRESSION USING K-L EXPANSION AND NEURAL NETWORK AND ITS ESTIMATION

Yoro Tatsuo, Kameyama Wataru

Proceedings of the IEICE General Conference 2003 ( 2 ) 217 - 217 2003.03

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Efficient Metadata Exchange and its Structure for Mobile Ad-hoc Networks

Jin Ling, Kameyama Wataru

Proceedings of the IEICE General Conference 2003 ( 1 ) 826 - 826 2003.03

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Information Distribution System Using Moving History in Mobile Computing Environments and its Evaluation

Yoshizawa Susumu, Kameyama Wataru

Proceedings of the IEICE General Conference 2003 ( 1 ) 830 - 830 2003.03

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A Study on Content Distribution Using Relative Position Information of Each Host

SHIMIZU Naoto, KAMEYAMA Wataru, WATANABE Hiroshi

Proceedings of the IEICE General Conference 2003 ( 2 ) 170 - 170 2003.03

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D-9 Automatic Building and Tuning of User Preference Information for Fine Content Selection

Kita Youji, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 2002 ( 2 ) 17 - 18 2002.09

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D-33 Metadata Sharing Method for Metadata Circulation

Mori Soichiro, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 2002 ( 2 ) 65 - 66 2002.09

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J-50 Personalization of Contents on Mass Media : A Proposal of Personalized Broadcasting and its Architecture

Fukuda Kenji, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 2002 ( 3 ) 301 - 302 2002.09

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K-13 Analysis of Face Impressions Using K-L Expansion and Neural Network

Yoro Tatsuo, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 2002 ( 3 ) 393 - 394 2002.09

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M-73 Information Distribution and Filtering Using Moving History in Mobile Computing Environments

Yoshizawa Susumu, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 2002 ( 4 ) 179 - 180 2002.09

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N-20 A Proposal on an Open Copyright Management System for Contents Distribution

Seki Akiko, Kameyama Wataru

情報科学技術フォーラム一般講演論文集 2002 ( 4 ) 277 - 278 2002.09

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Educational application of stereoscopic images over broadbanded networks

KAZAMA Mizuho, SHIBATA Takashi, KAWAI Takashi, KAMEYAMA Wataru, URANO Yoshiyori, MURATA Keisi

人間工学 = The Japanese journal of ergonomics 38 380 - 381 2002.06

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A Study on Geographic Information System Interworked with Automatically Collected User Information in Mobile Computing Environments

Yoshizawa Susumu, Kameyama Wataru

Proceedings of the IEICE General Conference 2002 ( 1 ) 39 - 39 2002.03

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Cooperative Working Environment Based on Dispersive Versioning System

Takeyama Jumpei, Kameyama Wataru

Proceedings of the IEICE General Conference 2002 ( 1 ) 128 - 128 2002.03

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Quantization Parameter Control Scheme for MPEG-2 Video Transcoder

KASAI Hiroyuki, NAGAYOSHI Isao, HANAMURA Tsuyoshi, KAMEYAMA Wataru, TOMINAGA Hideyoshi

The Transactions of the Institute of Electronics,Information and Communication Engineers B 85 ( 2 ) 278 - 287 2002.02

　View Summary

本論文では,DCT係数領域内再量子化処理によるMPEG-2ビデオトランスコーダに着目し,再量子化処理時のレートひずみ特性に基づく再量子化パラメータ禁止領域制御方式を提案する.まず最初に,DCT係数領域内でのMPEG-2トランスコーダ再量子化処理における再量子化結合処理方式を導出し,再量子化処理におけるレートひずみ特性を明らかにする.そして,再量子化特性に基づき,再量子化パラメータの算出に際して禁止領域を設け適応的に選択することで,再量子化誤差の発生を抑制することが可能なMPEG-2トランスコーダ再量子化制御方式を提案する.最後に,従来方式であるTM符号量制御適用方式,低遅延符号量制御方式,ドリフト誤差伝搬を考慮した符号量制御方式に適用することで,前段までの符号量制御方式に依存することなく画質向上を実現可能であることを示し,本提案方式の有効性を明らかにする.

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Educational application of stereoscopic images over broadbanded networks

Kazama Mizuho, Kawai Takashi, Kameyama Wataru, Urano Yoshiyori, Murawa Keisi

JES Ergonomics 38 ( 0 ) 380 - 381 2002

DOI CiNii
ディジタル放送におけるRTPストリーミングを用いたメディア融合を実現するための革新的方法

Belleguie L, 亀山渉

電子情報通信学会技術研究報告. IE, 画像工学 101 ( 456 ) 45 - 49 2001.11

　View Summary

最近、デジタル放送とインターネット間のメディア融合及び整合性が注目されています。これらを実現するための、RTPプロトコルを用いた新しいストリーミング方法を紹介します。MPEG-2のDSM-CCプロトコルを利用することにより、インターネットストリーミング内容を、同時にデジタル放送に高QoSでデリバリー出来、また、日本におけるデジタル放送に実装可能です。

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A Study on Network-Adaptive Video Transmission using RTP/RTCP

Watanabe Akihiro, Kameyama Wataru

Proceedings of the Society Conference of IEICE 2001 ( 2 ) 276 - 276 2001.08

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A District Go-operative Experiment of Multimedia Network Services using Gigabit Network

SAITO Ryuji, SASAKI Nobuyuki, SATO Masakazu, KAMEYAMA Wataru, URANO Yoshiyori

Proceedings of the IEICE General Conference 2001 ( 2 ) 165 - 165 2001.03

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Adaptive Video Rate Control Scheme for MPEG-2 Multi-Program TS Transcoder

SUGIURA Maki, KASAI Hiroyuki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

Proceedings of the IEICE General Conference 2001 ( 2 ) 388 - 388 2001.03

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Adaptive Video Rate Control Scheme for MPEG-2 Multi-Program TS Transcoder

KASAI Hiroyuki, SUGIURA Maki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

IEICE technical report. Electronic information displays 100 ( 604 ) 41 - 46 2001.01

　View Summary

In this paper, we propose a video rate control scheme for MPEG-2 multi-program transport stream (TS) transcoder. At first, we explain its algorithm that considers the composition, rate distortion characteristics, and start-end points of pictures in current transport stream to be transcoded. Next, we show the transcoder with the proposed video control scheme, and explain the process flow. Finally, from simulation experiments, we compare the proposed rate control scheme to the conventional rate control scheme in terms of changes of a ratio between input bits and output bits, coding bits and picture quality.

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Adaptive Video Rate Control Scheme for MPEG-2 Multi-Program TS Transcoder

KASAI Hiroyuki, SUGIURA Maki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

ITE Technical Report 25 ( 0 ) 41 - 46 2001

　View Summary

In this paper, we propose a video rate control scheme for MPEG-2 multi-program transport stream(TS)transcoder. At first, we explain its algorithm that considers the composition, rate distortion characteristics, and start-end points of pictures in current transport stream to be transcoded. Next, we show the transcoder with the proposed video control scheme, and explain the process flow. Finally, from simulation experiments, we compare the proposed rate control scheme to the conventional rate control scheme in terms of changes of a ratio between input bits and output bits, coding bits and picture quality.

DOI CiNii
ディジタル放送におけるRTPストリーミングを用いたメディア融合を実現するための革新的方法

Belleguie L, 亀山渉

映情学技報 25 ( 0 ) 45 - 49 2001

　View Summary

最近, デジタル放送とインターネット間のメディア融合及び整合性が注目されています。これらを実現するための、RTPプロトコルを用いた新しいストリーミング方法を紹介します。MPEG-2のDSM-CCプロトコルを利用することにより、インターネットストリーミング内容を、同時にデジタル放送に高 QoS でデリバリー出来、また、日本におけるデジタル放送に実装可能です。

CiNii
超高速ネットワークを用いたオープンラーニング

浦野義頼, 亀山渉, 河合隆史

ソフトピアジャパン共同研究報告書 6 10 - 1～18 2001

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2. メディア・システム技術 : 2-1 マルチメディア技術

亀山渉

画像電子学会誌 29 ( 6 ) 689 - 693 2000.11

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Rate Control Method in MPEG Bitstream Bitrate Scaling Considering Drift Propagation

KASAI Hiroyuki, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

The Transactions of the Institute of Electronics,Information and Communication Engineers. 83 ( 2 ) 509 - 524 2000.02

　View Summary

本論文では, DCT係数領域上での再量子化方法によるビットストリームレートスケーリング方式に着目し, ドリフト誤差伝搬を考慮したレートスケーリング符号量制御方式を提案する.まずDCT係数領域上でのレートスケーリング方式の誤差発生メカニズムを明らかにし, ドリフト誤差について理論的解析及びシミュレーション実験から考察を行い, 動きベクトル追跡に基づくドリフト誤差伝搬率の算出方法を示す.そして, 算出されたドリフト誤差伝搬率に基づいて, 再量子化誤差とドリフト誤差の和が最小となるような符合量制御方式を提案し, その詳細について説明する.最後に, 処理量, 要求バッファ量, 画質変動の各観点についてシミュレーション実験を行い, 従来方式と比較して, 処理量, 要求バッファ量のわずかな増加量のもとでドリフト誤差低減が可能であることを明らかにし, 提案方式の有効性を示す.

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高精細映像規格(MP@HL)を用いたリアルタイムVODシステムの開発

坂下惠治, 相良健司, 西池成章, 藤村一郎, 亀山渉, 花岡剛, 吉井一彦, 榊直昭

日本医学放射線学会雑誌 60 ( 2 ) S298 - S298 2000.02
A Study on Quant Control Scheme considering Re-Quantization Characterristics for MPEG-2 Transcoder (2)

NAGAYOSI Isao, KASAI Hiroyuki, HANAMURA Tsuyoshi, KAMEYAMA Wataru, TOMINAGA Hideyoshi

Proceedings of the IEICE General Conference 61 - 61 2000

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3-6 A Study on BML Browser Inplementation Using Java

KAMEYAMA Wataru, OZAKI Seiji, MEMEZAWA Kenji

PROCEEDINGS OF THE ITE ANNUAL CONVENTION 2000 ( 0 ) 43 - 44 2000

　View Summary

BML standing for Broadcast Markup Language is the new digital data broadcasting scheme,adopted by the Japanese government and developed by ARIB, based on W3C technology. In this paper, an implementation study of the BML browser using Java is discussed and some evaluation results on that are slso shown.

DOI CiNii
超高速ネットワークを用いたオープンラーニング

浦野義頼, 亀山渉, 河合隆史

ソフトピアジャパン共同研究報告書 5 17 - 1～24,別1枚 2000

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A Study on the Rate Control Scheme for the MPEG-2 Video Transcoder considering Re-Quantization Error

NAGAYOSHI Isao, KASAI Hiroyuki, HANAMURA Tsuyoshi, KAMEYAMA Wataru, TOMINAGA Hideyoshi

IEICE technical report. Image engineering 99 ( 444 ) 9 - 16 1999.11

　View Summary

In this paper, we focus on the MPEG video transcoder for the bitrate reducer, and propose the rate control scheme considering re-quantization error. First, we state re-quantization process in the transcoder and mention that the transcoder has a different property from the encoder. Next, we investigate the re-quantization property in terms of step size, distortion and rate, and derive the rate-distortion property of re-quantization. Next, we propose the rate control scheme considering the rate-distotion of re-quantization with minimization of distortion generated by re-quantization in the transcoder. Last, we evaluate the proposed rate control scheme from the image quality, and show the effectiveness of proposed scheme.

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Franceで暮らす

亀山渉

画像電子学会誌 28 ( 5 ) 636 - 638 1999.10

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Rate Control Scheme for Low Delay MPEG-2 Video Transcoder

KASAI Hiroyuki, HANAMURA Tsuyoshi, NISHIMURA Satoshi, KAMEYAMA Wataru, TOMINAGA Hideyoshi

IPSJ SIG Notes 1999 ( 82 ) 45 - 50 1999.10

　View Summary

In this paper, we propose the rate control scheme for low delay MPEG-2 video transcoder which reduce the bitrate of MPEG-2 bitstream in network node. At first, we state the requirement of the rate control for low delay transcoder. Next the rate control scheme for low delay transcoder is proposed. And, we analize the required delay time for the proposed scheme. At last, we evaluate the proposed scheme from the image quality, delay time and GOP-structure independency. As a result, we show the effectiveness of proposed scheme.

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Rate Control Scheme for Low Delay MPEG-2 Video Transcoder

KASAI Hiroyuki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

電気学会研究会資料. CMN, 通信研究会 1999 ( 20 ) 47 - 54 1999.09

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Rate Control Scheme for Low Delay MPEG-2 Video Transcoder

KASAI Hiroyuki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

IEICE technical report. Image engineering 99 ( 303 ) 47 - 54 1999.09

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Rate Control Scheme for Low Delay MPEG-2 Video Transcoder

KASAI Hiroyuki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

Technical report of IEICE. OFC 99 ( 301 ) 47 - 54 1999.09

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PHS端末を用いた院内画像転送システムの開発

相良健司, 西池成章, 藤村一郎, 坂下惠治, 亀山渉, 榊直昭, 金田裕之

日本放射線技術学会雑誌 55 ( 9 ) 903 - 903 1999.09

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MPEG2(MP@HL)を用いた医用画像のリアルタイムVODシステム

坂下恵治, 相良健司, 西池成章, 藤村一郎, 横田順一朗, 堀信一, 祐延良治, 榊直昭, 亀山渉, 安藤克彦

日本医学放射線学会雑誌 59 ( 2 ) S271 - S271 1999.02
208 PHS端末を用いた院内画像転送システムの開発

相良健司, 西池成章, 藤村一郎, 坂下惠治, 亀山渉, 榊直昭, 金田裕之

日放技学誌 55 ( 9 ) 1999

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Rate Control Scheme for Low Delay MPEG-2 Video Transcoder

KASAI Hiroyuki, HANAMURA Tsuyoshi, NAGAYOSHI Isao, KAMEYAMA Wataru, TOMINAGA Hideyoshi

ITE Technical Report 23 ( 0 ) 47 - 54 1999

　View Summary

In this paper, we propose the rate control scheme for low delay MPEG-2 video transcoder which reduce the bitrate of MPEG-2 bitstream in network node. At first, we state the requirement of the rate control for low delay transcoder. Next the rate control scheme for low delay transcoder is proposed. And, we analize the required delay time for the proposed scheme. At last, we evaluate the proposed scheme from the image quality, delay time and GOP-structure independency. As a result, we show the effectiveness of proposed scheme.

DOI CiNii
A Study on the Rate Control Scheme for the MPEG-2 Video Transcoder considering Re-Quantization Error

NAGAYOSHI Isao, KASAI Hiroyuki, HANAMURA Tsuyoshi, KAMEYAMA Wataru, TOMINAGA Hideyoshi

ITE Technical Report 23 ( 0 ) 9 - 16 1999

　View Summary

In this paper, we focus on the MPEG video transcoder for the bitrate reducer, and propose the rate control scheme considering re-quantization error. First, we state re-quantization process in the transcoder and mention that the transcoder has a different property from the encoder. Next, we investigate the re-quantization property in terms of step size, distortion and rate, and derive the rate-distortion property of re-quantization. Next, we propose the rate control scheme considring the rate-distortion of re-quantization with minimization of distortion generated by re-quantization in the transcoder. Last, we evaluate the proposed rate control scheme from the image quality, and show the effectiveness of proposed scheme.

DOI CiNii
超高速ネットワークを用いたオープンラーニング実現のための教育ミドルウェア環境

浦野義頼, 亀山渉, 河合隆史

ソフトピアジャパン共同研究報告書 4 311 - 326 1999

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A Proposal for a Next-Generation TV Transmission System Enabling Software Download

Yoshii Kazuhiko, Sakaki Naoaki, Kameyama Wataru, Katayama Yasuo, Hanamura Tsuyoshi, Ozaki Seiji

PROCEEDINGS OF THE ITE ANNUAL CONVENTION 1998 ( 0 ) 99 - 100 1998

　View Summary

As the current TV set architecture tightly coupled with its hardware components, it is only able to decode NTSC based services, and it is impossible to adapt to new coming broadcasting services using new coded representations in future, such as MPEG2,3D-TV, etc. Therefore, we propose a concept, "next-generation TV system", where a TV set is essentially a kind of computer, each processing within it is performed by software and the decoder program is downloaded through transmission channels. In this paper, an efficient transmission scheme enabling such a system is described.

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マルチメディアの基礎技術(完)VODとDAVIC

亀山渉

Bit 29 ( 12 ) 114 - 122 1997.12

CiNii
Development of DAVIC Compliant HD-VoD System

OTSUKI Hideki, SUZUKI Ryutaro, KUBOTA Fumito, KAMEYAMA Wataru, HANAMURA Tsuyoshi, SASAKI Nobuyuki

Proceedings of the Society Conference of IEICE 1997 ( 2 ) 1997.08

　View Summary

ATMネットワークにおけるアプリケーションとして映像・音声をユーザが容易に扱うことのできるサービスとしてVoD(Video on Demand)が注目されている。また、ATMの広帯域性を利用したHD品質の映像伝送も期待されている。本稿では、MPEG-2でコーディングしたHDの映像(MP@HL)を伝送するVoDシステムを開発したことを報告する。本システムはDAVIC1.0に準拠し、制御系にDSM-CCを用い、クライアントアプリケーションにMHEG-5を用いる。

CiNii
動画像符号化(MPEG-4)の標準化動向 (テレマティクスおよびマルチメディア通信の動向技術解説<特集>)

亀山渉

画像電子学会誌 23 ( 4 ) p250 - 254 1994.08

CiNii
Design of Motion Compensation Filters of Frequency Scalable Coding

Iwahashi Masahiro, Kameyama Wataru, Ohyama Koichi, Kanbayashi Noriyoshi

IEICE technical report. Circuits and systems 93 ( 333 ) 59 - 65 1993.11

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This report preposes a new MC(motion compensation)scheme in layered coding system to reduce blurring called ″drift″.The syste m compresses digital video data with NxN point DCT(discrete cosine transform)and MC.Furthermore it reconstructs down scaled pictures for the use of layered coding. The problem we are concerning with is the ″drift″ which is obse rved in reconstructed,down scaled and predicted pictures.First of all,the problem is investigated from multirate digital signal processing point of view.After that,a new MC in decoder is preposed which uses half band filteips.Finally,effectiveness of the method is confirmed by applying it to video data coding.

CiNii
Hierachical Video Coding Scheme with Scalability Compatibility

HANAMURA Tsuyoshi, SEKIGUCHI Shun-ichi, KAMEYAME Wataru, TOMINAGA Hideyoshi

The Transactions of the Institute of Electronics,Information and Communication Engineers B-(0xF9C1) 76 ( 3 ) 299 - 310 1993.03

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本論文では,MPEG 2符号化方式に対する機能要求条件を示し,それに対する一つの実現手段として階層的動画像符号化方式を提案する.本方式では,MPEG 1符号化方式において用いられている時間方向の予測のほかに,空間方向の予測も導入して予測効率を高めている.また次の特徴がある.(1)出力デバイスに依存しないノンインタレースフォーマット画像を入力とする,(2)ユーザの解像度選択を可能にする階層構造をもつ,(3)少ない演算量と広い補償範囲をカバーし,各階層の動きべクトルを検出する階層的動き検出法と動きべクトルの符号化方式,(4)位相ひずみを生じない画像縮退・拡大法の導入.また,符号化データの記述法はMPEG 1の拡張として実現しており互換性を保っている.更に,シミュレーション実験により,符号化効率の著しい低下なしに要求機能を実現する符号化方式であることを確認した.

CiNii
4)マルチメディア標準化のためのビデオ・ドキュメント・アーキテクチャの構想(画像通信システム研究会)

花村剛, 亀山渉, 富永英義

テレビジョン学会誌 44 ( 11 ) 1990.11

CiNii
6)構造化漢字フォントデータベース自動作成システムの研究(画像通信システム研究会)

姚偉明, 亀山渉, 富永英義

テレビジョン学会誌 44 ( 11 ) 1635 - 1636 1990.11

CiNii
DTPにおける文書処理技術 (デスクトップパブリッシング(DTP)特集号)

佐藤正和, 亀山渉, 李裕子

画像電子学会誌 18 ( 3 ) p108 - 118 1989.06

CiNii
地図情報のドキュメント・ア-キテクチャとその自動入力--行政区分地図情報の例 (文書画像処理技術論文特集)

中村さおり, 亀山渉, 富永英義

画像電子学会誌 17 ( 5 ) p320 - 327 1988.10

CiNii
白地図情報の分離および蓄積手法と実験システム

亀山渉, 岡秀幸, 富永英義

電子情報通信学会論文誌 D 情報・システム 70 ( 10 ) p1941 - 1952 1987.10

CiNii
18)地図情報の蓄積手法の研究(画像通信システム研究会(第72回))

岡秀幸, 亀山渉, 富永英義

テレビジョン学会誌 39 ( 8 ) 1985.08

CiNii
On a Data Base Input Technique for Maps in Image Processing

OKA Hideyuki, KAMEYAMA Wataru, TOMINAGA Hideyoshi

ITE Technical Report 8 ( 47 ) 31 - 36 1985

DOI CiNii
A Study on Quant Control Scheme considering Re-Quantization Characteristics for MPEG-2 Transconder (1)

KASAI Hiroyuki, NAGAYOSHI Isao, HANAMURA Tsuyoshi, KAMEYAMA Wataru, TOMINAGA Hideyoshi

Proceedings of the IEICE General Conference

CiNii

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Industrial Property Rights

製造設備の異常診断装置

手塚知幸, 篠永裕之, 亀山渉, 菅沼睦, 永島元貴

Patent

J-GLOBAL
コンテンツ配信システム及び方法

朴容震, 佐藤拓朗, 津田通隆, 甲藤二郎, 金子大希, 亀山渉

Patent

J-GLOBAL
ノード装置、処理システム、通信処理方法及び通信処理プログラム

山田一久, 南勇貴, 津田俊隆, 佐藤拓朗, 亀山渉, 甲藤二郎

Patent

J-GLOBAL
ネットワーク装置、ネットワークシステム、及びその作動方法

佐藤拓朗, 津田俊隆, 亀山渉, 甲藤二郎, フェンテス, ナカリノ, ハイロ, エドアルドロペス

Patent

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データ送信システム及び方法

甲藤二郎, 佐藤拓朗, 津田俊隆, 亀山渉, 金井謙治

Patent

J-GLOBAL
コンテンツ配信システム、ネットワーク装置、及びその作動方法

津田俊隆, 佐藤拓朗, 亀山渉, 甲藤二郎

Patent

J-GLOBAL
コンテンツ配信システム及び方法

甲藤二郎, 佐藤拓朗, 津田俊隆, 亀山渉, 金井謙治

Patent

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ネットワーク中継装置並びに情報提供システム及び方法

佐藤拓朗, 津田俊隆, 亀山渉, 甲藤二郎

Patent

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コンテンツ配信システム及び方法

津田俊隆, 佐藤拓朗, 亀山渉, 甲藤二郎

Patent

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視聴制御システム、放送局、受信機及び視聴制御方法

宮林聡, 浦野丈治, 土居清之, 加藤友規, 亀山渉, 大黒泰平, 細野一樹, 関亜紀子

Patent

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著作権管理システム

土方正夫, 深澤良彰, 亀山渉, 関亜紀子, 蘆田良貴

Patent

J-GLOBAL
映像蓄積再生装置

渡部秀一, 野村敏男, 亀山渉, 倪嬋斌

Patent

J-GLOBAL
映像蓄積再生装置

特許第4519074号

渡部秀一, 野村敏男, 亀山渉, 倪嬋斌

Patent

J-GLOBAL
広告流通分析システム、広告流通分析方法、広告流通分析プログラムおよび広告流通分析装置

亀山渉, 関亜紀子, スィープラスートスックパオ, 中西康浩, 木下信幸, 井上竜生

Patent

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視聴制御システム及び視聴制御方法

宮林聡, 浦野丈治, 土居清之, 加藤友規, 亀山渉, 大黒泰平, 細野一樹, 関亜紀子

Patent

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視聴制御システム及び視聴制御方法

特許第4428665号

宮林聡, 浦野丈治, 土居清之, 加藤友規, 亀山渉, 大黒泰平, 細野一樹, 関亜紀子

Patent

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アドホックネットワークのルーティング方法

亀山渉, 土橋健太郎

Patent

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動画像圧縮符号化制御方法および動画像圧縮符号化装置

花村剛, 高屋和幸, 笠井裕之, 西村敏, 亀山渉, 富永英義

Patent

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データ放送システムおよびデータ放送方法

尾崎誠司, 亀山渉, 花村剛, 吉井一彦

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スケーラビリティを有する画像符号伝送装置および方法並びに再量子化方法

花村剛, 西村敏, 笠井裕之, 高屋和幸, 亀山渉, 富永英義

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スキップマクロブロック禁止制御方法、スキップマクロブロック禁止制御装置およびスキップマクロブロック禁止制御プログラムを記録した媒体

花村剛, 高屋和幸, 笠井裕之, 西村敏, 亀山渉, 富永英義

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画像情報処理装置、画像情報の符号化および復号化方法

亀山渉

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動画像符号量制御方法と装置

亀山渉, 大山公一

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動画像符号量制御方法と装置

特許第2873781号

亀山渉, 大山公一

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スケーラビリティを有する画像符号化方法と装置

大山公一, 亀山渉

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スケーラビリティを有する画像符号化方法と装置

特許第2847467号

大山公一, 亀山渉

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ディジタル動画像の無断複製の際における画質劣化の方法とその装置

亀山渉, 片山康男, 藤原洋

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インターレース画像符号化方法と装置

片山泰男, 大山公一, 亀山渉

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多重化した動画像符号化方法と装置

亀山渉, 大山公一

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Syllabus

Bachelor Thesis B

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis A [S Grade]

School of Fundamental Science and Engineering

2024 spring semester
Multimedia Systems A

School of Fundamental Science and Engineering

2024 fall semester
Project Research B

School of Fundamental Science and Engineering

2024 fall semester
Project Research A

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis A（Fall Semester）

School of Fundamental Science and Engineering

2024 fall semester
Network Service and Business Model

School of Fundamental Science and Engineering

2024 spring semester
Info-Telecommunication and the Standardization

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis A（Fall Semester）

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis A

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis B

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis B [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis B（Spring Semester）

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis B（Spring Semester）

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis A

School of Fundamental Science and Engineering

2024 spring semester
Computer Science and Engineering Laboratory B [S Grade]

School of Fundamental Science and Engineering

2024 spring semester
Computer Science and Engineering Laboratory A [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Computer Science and Engineering Laboratory A (2)

School of Fundamental Science and Engineering

2024 fall semester
Computer Science and Engineering Laboratory B

School of Fundamental Science and Engineering

2024 spring semester
Info-Telecommunication and the Standardization

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis B (Spring Semester)

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis B [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Computer Science and Communications Engineering Laboratory

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis A (Fall Semester)

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis B

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis A [S Grade]

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis A (Fall Semester)

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis A

School of Fundamental Science and Engineering

2024 spring semester
Computer Science and Communications Engineering Laboratory [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Multimedia Systems A [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Communications and Computer Engineering Laboratory B [S Grade]

School of Fundamental Science and Engineering

2024 spring semester
Multimedia Systems A

School of Fundamental Science and Engineering

2024 fall semester
Communications and Computer Engineering Laboratory B

School of Fundamental Science and Engineering

2024 spring semester
Communications and Computer Engineering Laboratory A [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Communications and Computer Engineering Laboratory A

School of Fundamental Science and Engineering

2024 fall semester
Info-Telecommunication and the Standardization

School of Fundamental Science and Engineering

2024 spring semester
Graduation Thesis B (Fall)

School of Fundamental Science and Engineering

2024 fall semester
Graduation Thesis A (Fall)

School of Fundamental Science and Engineering

2024 fall semester
Graduation Thesis B (Spring)

School of Fundamental Science and Engineering

2024 spring semester
Computer Science and Communications Engineering Laboratory A [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Computer Science and Communications Engineering Laboratory A

School of Fundamental Science and Engineering

2024 fall semester
Info-Telecommunication and the Standardization

School of Fundamental Science and Engineering

2024 spring semester
Network Service and Business Model

School of Fundamental Science and Engineering

2024 spring semester
Info-Telecommunication and the Standardization

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis B

School of Fundamental Science and Engineering

2024 fall semester
Bachelor Thesis B (Spring Semester)

School of Fundamental Science and Engineering

2024 spring semester
Project Research B

School of Fundamental Science and Engineering

2024 fall semester
Project Research A

School of Fundamental Science and Engineering

2024 spring semester
Bachelor Thesis A

School of Fundamental Science and Engineering

2024 spring semester
Project Research Spring

School of Fundamental Science and Engineering

2024 spring semester
Project Research Fall

School of Fundamental Science and Engineering

2024 fall semester
Multimedia Systems A

School of Fundamental Science and Engineering

2024 fall semester
Graduation Thesis A (Spring) [S Grade]

School of Fundamental Science and Engineering

2024 spring semester
Info-Telecommunication and the Standardization

School of Fundamental Science and Engineering

2024 spring semester
Computer Science and Communications Engineering Laboratory B

School of Fundamental Science and Engineering

2024 spring semester
Introduction to Computers and Networks

School of Fundamental Science and Engineering

2024 spring semester
Graduation Thesis B (Spring) [S Grade]

School of Fundamental Science and Engineering

2024 spring semester
Graduation Thesis A (Spring)

School of Fundamental Science and Engineering

2024 spring semester
Graduation Thesis B (Fall) [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Graduation Thesis A (Fall) [S Grade]

School of Fundamental Science and Engineering

2024 fall semester
Seminar on Multimedia Information Distribution Systems B

Graduate School of Fundamental Science and Engineering

2024 fall semester
Seminar on Multimedia Information Distribution Systems A

Graduate School of Fundamental Science and Engineering

2024 spring semester
Info-Telecommunication and the Standardization

Graduate School of Fundamental Science and Engineering

2024 spring semester
Special Laboratory B in Computer Science and Communications Engineering

Graduate School of Fundamental Science and Engineering

2024 fall semester
Research on Multimedia Information Distribution Systems

Graduate School of Fundamental Science and Engineering

2024 full year
Special Laboratory B in Computer Science and Communications Engineering

Graduate School of Fundamental Science and Engineering

2024 fall semester
Seminar on Multimedia Information Distribution Systems D

Graduate School of Fundamental Science and Engineering

2024 fall semester
Seminar on Multimedia Information Distribution Systems C

Graduate School of Fundamental Science and Engineering

2024 spring semester
Seminar on Multimedia Information Distribution Systems B

Graduate School of Fundamental Science and Engineering

2024 fall semester
Seminar on Multimedia Information Distribution Systems A

Graduate School of Fundamental Science and Engineering

2024 spring semester
Research on Multimedia Information Distribution Systems

Graduate School of Fundamental Science and Engineering

2024 full year
Network Service and Business Model

Graduate School of Fundamental Science and Engineering

2024 spring semester
Info-Telecommunication and the Standardization

Graduate School of Fundamental Science and Engineering

2024 spring semester
Special Laboratory A in Computer Science and Communications Engineering

Graduate School of Fundamental Science and Engineering

2024 spring semester
Multimedia Representation and Content Distribution Systems

Graduate School of Fundamental Science and Engineering

2024 spring semester
Seminar on Multimedia Information Distribution Systems C

Graduate School of Fundamental Science and Engineering

2024 spring semester
Special Seminar B in Computer Science and Communications Engineering

Graduate School of Fundamental Science and Engineering

2024 fall semester
Special Seminar A in Computer Science and Communications Engineering

Graduate School of Fundamental Science and Engineering

2024 spring semester
Research on Multimedia Information Distribution Systems

Graduate School of Fundamental Science and Engineering

2024 full year
Special Laboratory A in Computer Science and Communications Engineering

Graduate School of Fundamental Science and Engineering

2024 spring semester
Multimedia Representation and Content Distribution Systems

Graduate School of Fundamental Science and Engineering

2024 spring semester
Seminar on Multimedia Information Distribution Systems D

Graduate School of Fundamental Science and Engineering

2024 fall semester

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Sub-affiliation

Faculty of Science and Engineering Graduate School of Fundamental Science and Engineering
Affiliated organization Global Education Center

Research Institute

2023

-

2024

Center for Data Science Concurrent Researcher
2022

-

2024

Waseda Research Institute for Science and Engineering Concurrent Researcher
2022

-

2024

Global Information and Telecommunication Institute Concurrent Researcher

Internal Special Research Projects

映像符号化方式における動き補償ディープツールの実現手法に関する研究

2022

　View Summary

従来の映像符号化方式を超える情報圧縮性能の達成を目指し、映像圧縮性能に大きく寄与する動き補償をDNN（Deep Neural Network）で置き換える手法について検討した。具体的な手法として脳の予測符号化理論を証明するために提案されたPredNetに着目し、PredNetの改良方式として、(1)PredNetに複数の畳込みカーネルを導入する方式、(2)GANとPredNetを組み合わせた方式、(3)PredNet中で擬似的な未来フレーム特徴量を考慮した方式を新たに考案した。実験の結果、どの提案方式もPredNetを上回る予測性能が得らることを確認した。
情報通信サービスにおけるユーザの期待や文脈を考慮する生体情報利用QoE評価手法

2017 菅沼　睦

　View Summary

様々な通信品質のコンテンツを視聴する際の評価者の生体情報等を取得し、より柔軟で個別化可能なQoE評価手法の検討を行った。具体的には、再生中に一時停止する遅延を含んだ動画像視聴時の生体信号等から主観評価値をランダムフォレストで予測したところ、興味度を説明変数に含んだ場合に高い予測精度が得られ、ユーザの期待や文脈がQoEに影響することが示唆された。また、近年視聴スタイルとして増加傾向にあるスマートフォンを見ながら動画像視聴する、いわゆる「ながら視聴時」の生体情報分析を行ったところ、高品質動画のながら視聴時に有意な瞳孔径散大を確認した。同様に、ユーザの動画像品質に対する評価がQoEに影響していることが示唆された。
生体情報を利用した通信サービスのユーザの期待や文脈を考慮するQoE評価手法

2016 菅沼　睦

　View Summary

MOS法(Mean Opinion Score)によるユーザ体感品質(QoE, Quality of Experience)評価の問題点を解決するため、ヒトの生体情報を利用したQoE評価手法の確立を目標とし、通信サービス品質と生体情報の関係性の分析を行った。本研究では、特に、視線情報(瞳孔径変動及び注視点)に着目し、映像品質に対する瞳孔径変動と注視点の分析と、ディープラーニングによる対光反射補正方式の検討を行った。検討の結果、画面X軸方向の注視点位置の標準偏差がビットレートに伴い低下する統計的に有意な結果を得ると共に、7階層ディープラーニングによって対光反射補正精度の向上が得られた。
映像コミュニケーション基盤としてのパーソナライズドＩＰＴＶ機能に関する基礎的研究

2011

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NGN（Next Generation Network）の実用化に伴い、NGN上の主要アプリケーションとして、従来のテレビの進化形態であるIPTVが注目されている。IPTVはIPネットワーク上でのオープンなサービスであるため、ネットワークに繋がる各視聴者は、IPTV基盤を用いた自由な情報発信や情報交換が技術的には可能である。このことから、IPTVは、従来のマスメディアとしての放送サービス、及び、パーソナライズドメディアとしてのVoD（Video On Demand）サービスを享受できるメディアとしてだけではなく、近い将来に、映像コミュニケーションメディアとして発展することが予想される。具体的には、同じ興味を持っている視聴者間で映像コンテンツを共有して視聴し、そのことによって視聴者間で感想や感情の共有が可能となる。加えて、視聴者からの映像配信も可能であるため、視聴者自身がコンテンツプロバイダあるいはサービスプロバイダとなることも可能となる。このことによって、IPTV視聴者は、世界中の放送局等のビジネスサービスプロバイダだけからではなく、一般視聴者と高品質な情報交換が可能になり、豊かな人間間のコミュニケーションを実現できる可能性がある。このようなサービスをIPTV上に実現するためには、SNS（Social Networking Service）に見られるような情報共有機能、視聴者が持っているコンテンツを配信・共有する著作権を考慮したコンテンツ配信機能及びコンテンツ管理機能、視聴者の嗜好の発見、嗜好の分析、嗜好情報の更新機能が必要であり、それに基づいた映像コンテンツや番組編成のパーソナライズ化が必須となる。以上から、本研究では、映像コミュニケーション基盤の観点からIPTVに着目し、豊かな映像コミュニケーションを実現するために必須の機能について、その具体化に関する基礎的な研究を行った。本研究では、特に、視聴者の嗜好の発見と嗜好の分析に焦点を当て、生体信号を利用した、非拘束で自然なユーザ嗜好情報の効率的な取得手法について研究を行った。具体的には、映像コンテンツ視聴中の視聴者の瞳孔径情報と、背景脳波観測による視聴者の情動情報を利用して、映像コンテンツのどの部分に視聴者がどのような興味を持ったのかについて分析する手法について研究した。実験の結果、単位時間における視聴者の平均瞳孔径及び瞳孔径変化の周波数成分と、背景脳波の特定の周波数成分電力間に強い相関関係があることが分った。即ち、これらの情報を利用することにより、視聴者の映像コンテンツに対する興味内容を具体的に分析できる可能性が高いことが示唆された。今後は、本手法を更に推し進め、視聴者の具体的な嗜好の分析技術を確立すると共に、映像コンテンツの有用性をユーザ毎に多角的に評価・分析し、時々刻々と変化するユーザ要求を満たす映像コンテンツ推薦方式の研究につなげていく予定である。
インターネットにおけるコンテンツ許諾状態の推定・判別手法に関する研究

2010

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本研究は、ディジタルコンテンツの適正な権利許諾環境を構築するための手法として、任意のWebサイト上のコンテンツを対象に、それらの違法流通の可能性を、誰でも推定・判別できる許諾検査手法、あるいは違法流通性検査手法を確立することを目的とする。インターネット等の公衆ネットワーク上では、必ずしも許諾条件が明示されているコンテンツばかりではない。ディジタルコンテンツの流通環境では、権利者が明確で権利許諾情報が付与されているコンテンツの許諾情報の開示だけでなく、権利者が不明で権利許諾に関する情報を持たないコンテンツについても、システムが許諾の有無や違法流通の可能性を推定し、利用者がそれを確認できる手段を提供することが、利用者に安心で安全なコンテンツの利活用環境の構築に繋がる。つまり、安心してコンテンツを利活用したいと考える誰もが、任意のWebサイト上で流通するコンテンツに対して汎用的に適用できる許諾状態推定・判別手法を明らかにすることが求められている。以上から、一年間の本特定課題研究においては、この課題に取り組むための基礎的研究として、Web上のコンテンツに対し、汎用的に適用できる検査手法を明かにすることに取り組んだ。具体的には、システムの基本設計を行うとともに、許諾状態の推定・判別に用いる情報を登録管理する権利情報データベースの基本構造について検討を行った。その結果、判別に利用できる情報は多岐に渡ることから、一般的には、高次元情報における孤立値あるいは異常値の判別手法を用いる必要があることが分かった。そのため、汎用アルゴリズムとしての高次元情報における孤立値あるいは異常値の検出アルゴリズムについて検討し、一定の精度で検出できるアルゴリズムを開発した。一方、このアルゴリズムを適用するに当たり、コンテンツ情報をどのように数値化するかについては課題を残している。
コンテンツ構造を考慮した多様な権利管理のための権利記述と制御方式に関する研究

2009

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今日のディジタルコンテンツ流通環境では、一般利用者を含む誰もが、コンテンツの制作・発信・共有・二次利用等を行えるようになってきた。これに伴い、安心安全にコンテンツを利活用して流通させるため、権利許諾処理条件を明確にして、円滑なコンテンツ流通を促す検討が進められている。しかしながら、コンテンツの二次利用に焦点を当てると、映像コンテンツや3Dコンテンツ等では様々な視聴効果等の制御が可能であることから、コンテンツ構造を考慮しなければ矛盾した権利記述や無効な権利記述になる可能性がある。例えば、ディジタルコンテンツの視聴及び改編・改変操作は、コンテンツのデータそのものに対する行為とコンテンツの構造に対する行為とに分けられることから、それぞれに対する権利記述が必要となる。また、このような権利許諾管理を実現することで、DRMにおいて曖昧であった原著作者の権利の所在と二次著作者の権利の所在を明確にした権利継承も実現できる可能性がある。例えば、上映された映画をDVD販売する際にはチャプタ情報が付けられているが、これは元の映画には付随していなかったコンテンツの構造情報であり、これを付加したことでスキップなどの視聴操作が可能となる。その権利が映画の著作権者によって当初から意図されていたものであるかは一般的には明らかではないが、コンテンツ構造情報に対する新しい権利として分離記述して許諾管理をすれば、権利の所在を明確化することが可能となる。以上から、本研究では、コンテンツ構造に着目し、多種多様な視聴及び改編・改変行為に対して、明確でかつ無矛盾な権利許諾管理手法及び二次コンテンツ作成に伴う権利継承処理手法を明らかにすることを主眼として、必要な技術の確立とその検証を行うことを目的とした。具体的には、(1) 「データ」「構造」「制御」「表示」の4機能からなるコンテンツモデルの確立、(2) 多種多様な利用行為と上記コンテンツモデルの4機能の関係を利用した許諾管理とコンテンツ制作のための編集履歴管理を実現する権利管理方式の明確化、(3) 上記コンテンツモデルの4機能に対する許諾条件を矛盾なく記述するための必要語彙と記述表現形式の明確化、について検討を行った。そして、これらに関する2009年度の研究成果は、下記の2つの学会発表によって公表した。今後の課題としては、プロトタイプシステムの作成を通して、機能面と実用性の観点から評価を行うことが残されている。
マルチメディアシナリオ情報交換のための汎用マルチメディア表現方式に関する研究

2001

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マルチメディアシナリオを交換するための汎用記述表現方式としては、開放的で相互運用性を保証し、且つ、国際的に認知された方式が望ましい。この条件に合致するものは、1998年2月にW3C (World Wide Web Consortium) によって勧告されたXML (Extensible Markup Language) が最もふさわしいと考えられる。XMLを利用して、マルチメディアシナリオの汎用記述を行う際には、基本となるフレームワークをDTD (Document Type Definition) あるいはXMLSchemaで定義を行い、様々なマルチメディアに関連する表現記述をXML語彙として、XML Namespaceを利用して表現する方式が一般的である。このようなフレームワークとXML語彙として、W3CではSMIL (Synchronized Multimedia Integration Language) を2001年8月に勧告化した。SMILは、ある意味、全てのマルチメディアシナリオ規定のスーパーセットといえる内容になっており、その応用について各方面で検討がなされている。しかしながら、実用的なアプリケーションを記述するためには、その記述量が膨大になり、また、様々な制作者間での協調作業が重要となる。そこで、分散的なネットワーク環境において、XML記述されたマルチメディアシナリオの効率的な編集作業を支援するためのシステムアーキテクチャを整理し、実装し、そして評価することでその有効性を確認した。具体的には、IETF (Internet Engineering Task Force) によって検討と標準化作業が進められているWebDAV (Web-based Distributed Authoring and Versioning) を拡張し、XMLインスタンス木における各ノード情報を複数の人間で同時に編集できるように権利を管理し、更に、それらの版の更新情報も管理出来るようなシステムの提案を行った。本システムはプロトタイプであるため、現時点では汎用的なDTDの取り込み等には対処できない。今後の課題として、更なる汎用化と様々なXML語彙に対する柔軟性をどのようにシステム的に実現するかを検討しなければならない。
通信・放送・コンピュータを融合するマルチメディア表現形式とその符号化方式の研究

1999

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　通信・放送・コンピュータを融合するマルチメディア表現形式を巡り、1999年度は日本にとって大きな転換が生じた年であった。というのも、1999年7月の郵政省電気通信技術審議会において、2000年から始まるディジタル衛星データ放送の方式として、それまで第1候補であったISO/IEC 13522-5（MHEG-5）の採用を見送り、新たにXMLベースのデータ放送方式を日本独自の方式として作成することに決まったためである。この決定を受け、実際の方式の策定作業は（社）電波産業会にワーキンググループが設置され、そこで行われることとなった。このため、本研究課題においても、この新しいデータ放送方式であるBML（Broadcast Markup Language）方式も検討することとし、実際にシステムを構築した上で、各種のマルチメディア表現方式との得失の比較についても検討を加えることとした。　BMLの規格書は1999年10月に発行されたが、その規格を元に、ディジタルデータ放送方式を受信するプロトタイプシステムをPC上で作成した。言語はJavaを利用し、プラットフォームに依存しないようなソフトウェア構成を検討し、最終的に満足するシステムを構築することができた。特に課題となった点は、Javaのグラフィックス描画に関する部分であり、これに関して高速の描画アルゴリズムを考案し、実用的な性能を得た。本システムを様々なデータを与えることで評価した結果、BML規格の欠点並びに不備な点を多々発見し、それらをBMLワーキンググループのメンバに伝えることで、フィードバックを行った。その結果、データ放送方式の規格としてBMLは一応の完成度を持つことができたと考えている。BML規格の最大の問題点は、インターネットの諸規格と完全に互換性が取れていないことであり、このことは、通信・放送・コンピュータの融合を考える上ではかなり致命的な問題であると考える。今後は、このプロトタイプを更に整備し、次の研究のための土台として利用し、先に述べた点を更に検討していく必要があると考えている。　一方、ISO/IEC JTC1/SC29/WG12においては、ISO/IEC 13522-5のXML表現方式を提案し、この提案は最終的にISO/IEC 13522-8規格（MHEG-XML）のベースとして採用された。ISO/IEC 13522-8によれば、いわゆるMHEG-5アプリケーションをXML形式で表現することができ、インターネットの諸規格との親和性もよい。現在、ISO/IEC 13522-8は標準化の最終段階にさしかかっており、2000年度内に正式に国際標準として発行の見込みである。　以上のように、本研究課題に対して1999年度は、BML方式の実装と検討とISO/IEC 13522-8の標準化活動を通して、通信・放送・コンピュータを融合するマルチメディア表現形式についての第1段階の検討を終えたと考えている。今後は、本研究課題で得た成果を更に発展させ、究極の目標であるSuper Multimedia Integration Architectureに関する研究を進めていく。

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