Mr. Daiki Higuchi Profile

Daiki Higuchi

at Chiba Univ

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Proceedings Article | 1 May 2022 Paper

A study of multimodal head/eye orientation prediction techniques in virtual space

Daiki Higuchi, Yoshitsugu Manabe, Noriko Yata

Proceedings Volume 12177, 121771I (2022) https://doi.org/10.1117/12.2626118

KEYWORDS: Video, Eye, Virtual reality, Head, Head-mounted displays, Visual process modeling, Machine learning

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Various models have been proposed to predict the future head/gaze orientation of a user watching a 360-degree video. However, most of these models do not take sound information into account, and there are few studies on the influence of sound on users in VR space. This study proposes a multimodal model for predicting head/gaze orientation for 360-degree videos based on a new analysis of users' head/gaze behavior in VR space. First, we focus on whether people are attracted to the sound source of the 360-degree video or not. We conducted a head/gaze tracking experiment with 22 subjects in AV (Audio-Visual) and V (Visual) conditions using 32 videos. As a result, it was confirmed that whether they were attracted to the sound source differed depending on the video. Next, we trained a deep learning model based on the results and constructed and evaluated a multimodal model that combined visual and auditory information. As a result, we were able to construct a multimodal head/gaze prediction model that used the sound source explicitly. However, from the viewpoint of accuracy improvement, we could not confirm any advantage of multimodalization. Finally, a discussion of this problem and prospects is given.

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