Teleporting through virtual environments: Effects of path scale and environment scale on spatial updating
Teleporting through virtual environments: Effects of path scale and environment scale on spatial updating
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DOI：
10.1109/tvcg.2020.2973051
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发表时间：
2020-05-01
影响因子：
5.2
通讯作者：
Gilbert, Stephen B.
中科院分区：
文献类型：
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作者：
Kelly, Jonathan W.;Ostrander, Alec G.;Gilbert, Stephen B.
虚拟现实系统通常允许用户物理行走和转弯，但虚拟环境（VE）通常会超过可用的行走空间。远距传送已经成为一种常见的用户界面，由此用户在没有自运动提示的情况下被传送之前瞄准激光指示器以指示VE中的期望位置，并且有时指示取向。本研究评估了旋转自我运动线索对空间更新性能的影响，以及旋转线索的重要性是否因运动尺度和环境尺度而异。参与者在指向未标记的路径原点之前，通过沿沿着两条出站路径进行心灵传送来完成三角形完成任务。旋转自运动减少了所有级别的运动规模和环境规模的总体误差，尽管它也引入了轻微的偏向旋转不足。当导航大三角形和周围环境很大时，旋转自运动的重要性被夸大了。在一个小VE内导航一个大三角形使参与者更接近周围的地标和边界，这导致了对领航（基于地标的导航）的更大依赖，因此减少了-但没有消除-旋转自我运动线索的影响。这些结果表明，旋转的自我运动线索是很重要的瞬间移动时，导航可以通过使驾驶得到改善。
Virtual reality systems typically allow users to physically walk and turn, but virtual environments (VEs) often exceed the available walking space. Teleporting has become a common user interface, whereby the user aims a laser pointer to indicate the desired location, and sometimes orientation, in the VE before being transported without self-motion cues. This study evaluated the influence of rotational self-motion cues on spatial updating performance when teleporting, and whether the importance of rotational cues varies across movement scale and environment scale. Participants performed a triangle completion task by teleporting along two outbound path legs before pointing to the unmarked path origin. Rotational self-motion reduced overall errors across all levels of movement scale and environment scale, though it also introduced a slight bias toward under-rotation. The importance of rotational self-motion was exaggerated when navigating large triangles and when the surrounding environment was large. Navigating a large triangle within a small VE brought participants closer to surrounding landmarks and boundaries, which led to greater reliance on piloting (landmark-based navigation) and therefore reduced-but did not eliminate-the impact of rotational self-motion cues. These results indicate that rotational self-motion cues are important when teleporting, and that navigation can be improved by enabling piloting.