Since one of the most important aspects of a Fish Tank Virtual Reality (FTVR) system is how well it provides the illusion of depth to users, we present a study that evaluates users' depth perception in FTVR systems using three tasks. The tasks are based on psychological research on human vision and depth judgments common in VR applications. We find that participants do not perform well under motion parallax cues only, when compared with stereo only or a combination of both kinds of cues. Measurements of participants' head movement during each task prove valuable in explaining the experimental findings. We conclude that FTVR users rely on stereopsis for depth perception in FTVR environments more than they do on motion parallax, especially for tasks requiring depth acuity.

中文翻译：

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用户行为和立体感在鱼缸虚拟现实中深度感知的重要性

由于鱼缸虚拟现实 (FTVR) 系统最重要的方面之一是它向用户提供深度错觉的程度，因此我们提出了一项研究，该研究使用三个任务评估用户在 FTVR 系统中的深度感知。这些任务基于对 VR 应用程序中常见的人类视觉和深度判断的心理学研究。我们发现，与仅立体声或两种线索的组合相比，参与者仅在运动视差线索下表现不佳。在每项任务中对参与者头部运动的测量证明对解释实验结果很有价值。我们得出的结论是，FTVR 用户在 FTVR 环境中更依赖立体视觉进行深度感知，而不是运动视差，尤其是对于需要深度敏锐度的任务。