The Effect of a Foveated Field-of-view Restrictor on VR Sickness

The Effect of a Foveated Field-of-view Restrictor on VR Sickness
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中央凹视场限制器对 VR 晕眩症的影响

DOI:
10.1109/vr46266.2020.00087
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发表时间:
2020
期刊:
IEEE Conference on Virtual Reality and 3D User Interfaces (VR
影响因子:
--
通讯作者:
Folmer, Eelke
Folmer, Eelke
中科院分区:
--
文献类型:
--
作者:
Adhanom, Isayas Berhe;Navarro Griffin, Nathan;MacNeilage, Paul;Folmer, Eelke

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虚拟现实疾病通常是由视觉-前庭冲突引起的。由于光流的自运动主要由视网膜周边的运动驱动,因此在运动过程中减少用户的视野 (FOV) 已被证明是最大限度减少视觉前庭冲突和 VR 晕眩感的有效策略。当前的视场限制器实现通过渲染中心固定在头戴式显示器 (HMD) 中心的限制器来减少用户的视场,这在用户的眼睛注视与头部注视对齐时有效。然而,在偏心注视期间,用户可能会注视视场限制器本身,从而使他们暴露在外围光流中,这可能会导致 VR 不适感增加。为了解决这些限制,我们开发了一种中心凹视场限制器,并探索根据用户眼睛注视位置动态移动视场限制器中心的效果。我们进行了一项用户研究 (n=22),其中每个参与者在虚拟环境中导航时使用中心凹视场限制器和头部固定视场限制器。我们发现两种限制器之间的 VR 晕眩测量或显着性没有统计学上的显着差异。然而,通过眼睛注视分散测量,眼睛注视行为存在显着差异,与头部固定视场限制器相比,中心凹视场限制器允许参与者拥有更宽的视觉扫描区域,后者将他们的眼睛注视限制在视场中心。
Virtual reality sickness typically results from visual-vestibular conflict. Because self-motion from optical flow is driven most strongly by motion at the periphery of the retina, reducing the user’s field-of-view (FOV) during locomotion has proven to be an effective strategy to minimize visual vestibular conflict and VR sickness. Current FOV restrictor implementations reduce the user’s FOV by rendering a restrictor whose center is fixed at the center of the head mounted display (HMD), which is effective when the user’s eye gaze is aligned with head gaze. However, during eccentric eye gaze, users may look at the FOV restrictor itself, exposing them to peripheral optical flow which could lead to increased VR sickness. To address these limitations, we develop a foveated FOV restrictor and we explore the effect of dynamically moving the center of the FOV restrictor according to the user’s eye gaze position. We conducted a user study (n=22) where each participant uses a foveated FOV restrictor and a head-fixed FOV restrictor while navigating a virtual environment. We found no statistically significant difference in VR sickness measures or noticeability between both restrictors. However, there was a significant difference in eye gaze behavior, as measured by eye gaze dispersion, with the foveated FOV restrictor allowing participants to have a wider visual scan area compared to the head-fixed FOV restrictor, which confined their eye gaze to the center of the FOV.
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