Asymmetric Lateral Field-of-View Restriction to Mitigate Cybersickness During Virtual Turns
Asymmetric Lateral Field-of-View Restriction to Mitigate Cybersickness During Virtual Turns
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DOI：
10.1109/vr51125.2022.00028
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发表时间：
2022-03
期刊：
影响因子：
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通讯作者：
Fei Wu;Evan Suma Rosenberg
中科院分区：
文献类型：
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作者：
Fei Wu;Evan Suma Rosenberg
视场（FOV）限制是商业虚拟现实（VR）应用中减少晕网症的常用技术。然而，大多数现有的FOV限制技术被实现为对称图像，其在虚拟旋转期间遮挡用户的视图。在本文中，我们提出并评估了一种新的FOV限制的变体，称为侧限制器。侧面限制使用非对称遮罩来在虚拟旋转期间仅遮蔽外围的一个侧面区域，并且将限制的中心朝向转弯方向横向移位。我们进行了一项研究，使用受试者之间的设计，比较侧限流器，传统的对称限流器，和控制条件没有FOV的限制。参与者被要求通过一个复杂的迷宫般的环境中使用一个控制器使用三个限制器之一。与控制条件相比，侧限流器在缓解晕电、减少不适、改善主观可见度以及使用户能够保持沉浸更长时间方面是有效的。此外，我们没有发现任何经验证据的负面缺点相比，对称限制器，这表明，侧限制是一种有效的晕机缓解技术的虚拟环境中频繁转弯。
Field-of-view (FOV) restriction is a common technique to reduce cybersickness in commercial virtual reality (VR) applications. However, the majority of existing FOV restriction techniques are implemented as symmetric imagery, which occludes users’ views during virtual rotation. In this paper, we proposed and evaluated a novel variant of FOV restriction, referred to as a side restrictor. Side restriction uses an asymmetric mask to obscure only one side region of the periphery during virtual rotation and laterally shifts the center of restriction towards the direction of the turn. We conducted a study using a between-subjects design that compared the side restrictor, a traditional symmetric restrictor, and a control condition without FOV restriction. Participants were required to navigate through a complex maze-like environment using a controller using one of three restrictors. Compared to the control condition, the side restrictor was effective in mitigating cybersickness, reducing discomfort, improving subjective visibility, and enabling users to remain immersed for a longer period of time. Additionally, we found no empirical evidence of negative drawbacks when compared to the symmetric restrictor, which suggests that side restriction is an effective cybersickness mitigation technique for virtual environments with frequent turns.