VR中触觉反馈能增强行人对碰撞的敏感度和视觉探索
Effect of Haptic Feedback on Avoidance Behavior and Visual Exploration in Dynamic VR Pedestrian Environment
- 通过触觉反馈模拟碰撞，改变用户避让动作
- 触觉反馈使行走路径更长，骨盆角度变化更大
- 适合虚拟现实环境中的应急演练与空间设计评估
虚拟现实中的行人仿真在应急疏散训练和建筑布局评估中具有重要应用。尽管触觉反馈可提升沉浸感，但其对密集动态人流中行走行为的影响尚不明确。本研究通过用户实验，探究触觉反馈如何影响用户在拥挤行人间的行走运动。结果显示，触觉反馈显著改变了用户的碰撞避让行为：行走轨迹长度增加，骨盆角度变化更明显。当非玩家角色（NPC）从视野内或侧面、背后接近时，用户横向位置与骨盆角度的瞬时偏移均增大。此外，触觉反馈还提升了用户对侧后方接近的感知与视觉探索能力。行走速度的变化幅度也因触觉反馈而增加。结果表明，触觉反馈增强了用户在虚拟环境中对碰撞事件的敏感性。
原文摘要 · Abstract (English)
Human crowd simulation in virtual reality (VR) is a powerful tool with potential applications including emergency evacuation training and assessment of building layout. While haptic feedback in VR enhances immersive experience, its effect on walking behavior in dense and dynamic pedestrian flows is unknown. Through a user study, we investigated how haptic feedback changes user walking motion in crowded pedestrian flows in VR. The results indicate that haptic feedback changed users' collision avoidance movements, as measured by increased walking trajectory length and change in pelvis angle. The displacements of users' lateral position and pelvis angle were also increased in the instantaneous response to a collision with a non-player character (NPC), even when the NPC was inside the field of view. Haptic feedback also enhanced users' awareness and visual exploration when an NPC approached from the side and back. Furthermore, variation in walking speed was increased by the haptic feedback. These results suggested that the haptic feedback enhanced users' sensitivity to a collision in VR environment.
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