Judgments of Object Size and Distance across Different Virtual Reality Environments: A Preliminary Study
Judgments of Object Size and Distance across Different Virtual Reality Environments: A Preliminary Study
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DOI：
10.3390/app112311510
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发表时间：
2021-12-01
影响因子：
2.7
通讯作者：
McNamara, Ann
中科院分区：
文献类型：
--
作者：
Park, Hannah;Faghihi, Nafiseh;McNamara, Ann
基于 VR 的特色应用模拟可培训未来的劳动力适应变化环境中的工作。新兴技术有可能将未来劳动力的领域扩展到极端环境，例如外太空和外星地形。为了了解人类如何在缺乏熟悉的空间线索的环境中导航，本研究检查了三种环境中的空间感知。使用虚拟现实模拟环境。我们检查了参与者在最小、中等或最大视觉线索条件下估计刺激大小和距离的能力，分别对应于模拟外太空、外星地形或典型城市景观的环境。研究结果表明，在最大和最小视觉提示环境中，距离都被低估，但在中等环境中，距离有高估的趋势。我们进一步观察到，最小环境中的深度估计明显优于其他两种环境。然而，在具有最大线索的环境（城市景观）中，高度估计比在具有最小线索的环境（外太空）中更准确。更一般地说，我们的结果表明，熟悉的视觉线索比不熟悉的线索更有助于更好地估计大小和距离。事实上，陌生的、可能是误导性的视觉线索（描述外星地形环境的特征）的存在，比完全没有距离和大小感知视觉线索的环境更具破坏性。这些发现对于培训工人更好地适应极端环境具有重要意义。
Featured Application VR-based simulations to train future workforce to adapt to work in altered environments. Emerging technologies offer the potential to expand the domain of the future workforce to extreme environments, such as outer space and alien terrains. To understand how humans navigate in such environments that lack familiar spatial cues this study examined spatial perception in three types of environments. The environments were simulated using virtual reality. We examined participants' ability to estimate the size and distance of stimuli under conditions of minimal, moderate, or maximum visual cues, corresponding to an environment simulating outer space, an alien terrain, or a typical cityscape, respectively. The findings show underestimation of distance in both the maximum and the minimum visual cue environment but a tendency for overestimation of distance in the moderate environment. We further observed that depth estimation was substantially better in the minimum environment than in the other two environments. However, estimation of height was more accurate in the environment with maximum cues (cityscape) than the environment with minimum cues (outer space). More generally, our results suggest that familiar visual cues facilitated better estimation of size and distance than unfamiliar cues. In fact, the presence of unfamiliar, and perhaps misleading visual cues (characterizing the alien terrain environment), was more disruptive than an environment with a total absence of visual cues for distance and size perception. The findings have implications for training workers to better adapt to extreme environments.