筆者らは、深層学習を用いたデータ拡張・統合技術を人間工学データに適応する手法を提案し、継続的な検討を行っている。本研究では、筆者らの提案手法を、マーケティングで利活用されるアンケートデータ・行動データへの適応について、実験的に検討することを目的とした。 結果から、二種類の異なるマーケティングデータベース（質問紙アンケートデータ及び実ログデータ）をGANを用いて拡張・統合することで、特定の目的変数（購入商品等）の予測精度が向上する効果が認められた。

This paper describes a comparison of user experience of virtual reality (VR) image angles. 7 angles conditions are prepared and evaluated the user experience during viewing VR images with a headset by measuring subjective and objective indexes. Angle conditions were every 30 degrees from 180 to 360 degrees. From the results of the subjective indexes (reality, presence, and depth sensation), a 360-degree image was evaluated highest, and different evaluations were made between 240 and 270 degrees. In addition, from the results of the objective indexes (eye and head tracking), a tendency to spread the eye and head movement was found as the image angle increases.

This paper describes a comparison of user experience of virtual reality (VR) image format. The authors prepared the following four conditions and evaluated the user experience during viewing VR images with a headset by measuring subjective and objective indices Condition 1: monoscopic 180-degree image, Condition 2: stereoscopic 180-degree image, Condition 3: monoscopic 360-degree image, Condition 4: stereoscopic 360-degree image. From the results of the subjective indices (reality, presence, and depth sensation), condition 4 was evaluated highest, and conditions 2 and 3 were evaluated to the same extent. In addition, from the results of the objective indices (eye and head tracking), a tendency to suppress head movement was found in 180-degree images.

The purpose of this research is to clarify the effects of binocular parallax in 360-degree images. Specifically, we measured and analyzed gazes during viewing stimuli for 60 seconds with different parallax distributions. The parallax distributions were four types of all 2D / all 3D / left and right 3D / front and back 3D. From the results, it was suggested that disparity distributions changed the viewing behavior with the passage of time, and even if parallax is added to a part of the image, the subjective stereoscopic effect increased. From these facts, it is suggested that there is effective 3D representation in the 360-degree images.

<p>The authors examined the psycho-physiological effects of viewing short segments of 360° videos using a head-mounted display (HMD) in terms of the type of content and the viewing environment. Twenty participants viewed 360° videos with varying features using an eye-tracking HMD consisting of a smartphone fitted in a case containing optics. Ten participants were seated on a swivel chair and the others on a fixed one. As objective indexes, changes in the direction of gaze and body rotation (shoulder and head) were measured during viewing. As subjective indexes, motion sickness, emotional reaction and presence and immersion were measured. The results of the objective indexes showed that gaze tended to focus on the center of the screen when there was more camera motion. Further, chair swiveling increased head motion and horizontal eye movement. Results of the subjective indexes showed that the content type affected subjective symptoms of sickness and emotional arousal. Furthermore, chair swiveling augmented these symptoms and decreased the arousal level. In conclusion, it is suggested that the behavioral and psychological responses of viewing short segments of 360° videos using an HMD are affected by both the characteristics of the content being viewed and the viewing environment.</p>

In this study investigated the effect of the frame design of a simple smartphone HMD on the stereoscopic visionand considered the design requirements for comfortable viewing environment. The results showed a trend that the fusionallimit becomes nearer in a simple HMD.

ヘッドマウントディスプレイ（HMD）を用いたバーチャルリアリティ（VR）体験においては、デバイスによる制限により大きく、３軸自由度の移動に制限のあるものと、６軸自由度の自由に移動のできるものがある。特に６軸自由度では、現実世界と同様に足を使って移動することでVR空間を自由に移動することが可能であり、現実空間（部屋）全体を使用した自由度の高い体験がルームスケールで可能となる。しかしながら、HMDを装着した状態で部屋の中を動き回ると、VR空間を体験しながら外界の確認をすることができないため、非常に危険な行為となる。そこで、VR空間にありながら危険を回避する人間工学的な検討が必須である。

近年、様々な分野で活用が進んでいるバーチャルリアリティ（VR）技術に関して、いくつかの問題がある。特に問題となることが、VR酔いである。VR酔いとは乗り物酔いに似た症状であり、原因として有力な説に感覚不一致説がある。感覚不一致説は、実際に知覚している感覚と過去の経験から予測される感覚の矛盾により酔いが起きるというものである。現状では、3自由度と6自由度のヘッドマウントディスプレイ（HMD）があるが、どちらもVR体験をする現実の範囲には制限がある一方で、VR空間では制限がない。特に、3自由度のHMDでは現実では動いていないがVR空間では動くという感覚が一致しない場面がある。そこで、VR空間における快適な移動手法に関する人間工学的な検討を行った。