Can physical motions prevent disorientation in naturalistic VR?
Can physical motions prevent disorientation in naturalistic VR?
复制标题
物理运动可以防止自然 VR 中的迷失方向吗？
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
B. Riecke
中科院分区：
文献类型：
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作者：
Salvar Sigurdarson;Andrew P. Milne;Daniel Feuereissen;B. Riecke
大多数虚拟现实模拟器都有一个严重的缺陷：用户在导航时往往很容易迷路和迷失方向。根据流行的观点，这是因为缺乏实际的物理运动来匹配视觉模拟的运动：例如，使用基于HMD的VR，Klatzky等人。[1]表明，参与者无法更新视觉模拟旋转，除非伴随着观察者的物理旋转，即使是被动的。如果我们使用更自然的环境（但没有明显的标志），而不仅仅是光流，是否仍然需要物理运动线索来防止定向障碍？为了解决这个问题，我们使用了一个受Klatzky等人启发的范例：在城市环境中沿着弯曲的街道进行沿着的被动运动后，参与者被要求指向他们开始的地方。在一半的试验中，视觉显示的转弯伴随着匹配的身体旋转。结果表明，增加物理运动线索并没有提高指向性能。这表明，如果视觉效果足够自然，物理运动对防止迷失方向可能不那么重要。此外，出乎意料的是，两名参与者始终未能更新视觉模拟的航向变化，即使它们伴随着物理旋转。这表明，物理运动线索不一定提高空间定向能力在VR（诱导强制性的空间更新）。这些发现对设计有效的运动模拟器具有重要意义。
Most virtual reality simulators have a serious flaw: Users tend to get easily lost and disoriented as they navigate. According to the prevailing opinion, this is because of the lack of actual physical motion to match the visually simulated motion: E.g., using HMD-based VR, Klatzky et al. [1] showed that participants failed to update visually simulated rotations unless they were accompanied by physical rotation of the observer, even if passive. If we use more naturalistic environments (but no salient landmarks) instead of just optic flow, would physical motion cues still be needed to prevent disorientation? To address this question, we used a paradigm inspired by Klatzky et al.: After visually displayed passive movements along curved streets in a city environment, participants were asked to point back to where they started. In half of the trials the visually displayed turns were accompanied by a matching physical rotation. Results showed that adding physical motion cues did not improve pointing performance. This suggests that physical motions might be less important to prevent disorientation if visuals are naturalistic enough. Furthermore, unexpectedly two participants consistently failed to update the visually simulated heading changes, even when they were accompanied by physical rotations. This suggests that physical motion cues do not necessarily improve spatial orientation ability in VR (by inducing obligatory spatial updating). These findings have noteworthy implications for the design of effective motion simulators.