ICAT-EGVE2019 - Posters and Demos

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https://diglib.eg.org/handle/10.2312/2632805

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Browsing ICAT-EGVE2019 - Posters and Demos by Subject "centered computing → Virtual reality"

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    Visual Search of Interactive Gaze in a Virtual Environment: Detecting Eye Contact is Faster than Gaze Averting
    (The Eurographics Association, 2019) Yamamoto, Kyosuke; Kitazaki, Michiteru; Kakehi, Yasuaki and Hiyama, Atsushi
    We often gaze at each other when we communicate with others intimately. A previous study with static stimuli has revealed that perception of others' gaze is asymmetric only when the head is deviated; gazing face target is found faster than averting gaze target. However, the gaze research has been limited to static eye's stimuli, and the perceptual processing of dynamic gaze has not yet been investigated. Therefore, we created dynamic and interactive gaze stimuli of frontal heads in a virtual environment using a head mounted display that can measure eye movements, and conducted visual search experiments. We found that the gaze contacting target presented among gaze averting distractors was detected faster than the gaze averting target among gaze directing distractors. Thus, the detecting eye contact is faster than gaze averting even with frontal faces in dynamic environments, suggesting that dynamic eye contact has a special value for human perception.
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    Wider IPD Makes People Perceive Their Body to be not so Large when Large Hands are Presented
    (The Eurographics Association, 2019) Mine, Daisuke; Ogawa, Nami; Narumi, Takuji; Yokosawa, Kazuhiko; Kakehi, Yasuaki and Hiyama, Atsushi
    It is known that hand size and the interpupillary distance (IPD), as well as eye height from the ground, are some of the determinants of body size. We investigated the effect of simultaneous changes in hand size and IPD on size perception regarding the body and the external world in virtual reality. We manipulated the hand size and the IPD (normal hand and normal IPD, large hand and normal IPD, large hand and large IPD) while vertically increasing the participants' eye height. Our main results indicated that a wider IPD combined with larger hands made participants perceive their body to be smaller than when the IPD was normal. Thus, the IPD influences the perception of body size when large hands are presented. This is a novel result because it suggests the probability of an interaction effect between the IPD and the hand size, or between the IPD and the presence of hands, on body size perception.