探究预期碰撞反馈在拥挤虚拟环境中的作用
Exploring the Role of Expected Collision Feedback in Crowded Virtual Environments
AI总结：
该研究针对虚拟环境缺少真实碰撞风险的问题，测试了听觉提示、触觉振动及真实碰撞预期三类反馈，发现它们分别从全局导航、局部运动、临场感等不同维度影响用户行为与感知。
摘要：
越来越多的虚拟现实应用需要能够模拟真实世界条件的环境，这类环境中通常会有展现真实行为的动态虚拟人。理解用户在这些虚拟智能体之间的感知与导航方式，是设计具备虚拟人群的真实、有效环境的关键。在现实世界中，碰撞风险会显著影响人类的运动，但这种风险在虚拟场景中基本不存在。本文研究了预期碰撞反馈对用户在虚拟人群中的感知与交互的影响。我们考察了常用碰撞反馈技术（听觉提示与触觉振动）的效果，同时也测试了让参与者预期可能与真人发生物理碰撞的场景——即设定部分虚拟人实际上由真人化身驱动、共享同一物理空间的情况。结果表明，预期碰撞反馈会显著影响参与者的行为（包括全局导航与局部运动），以及他们对临场感与共同存在感的主观感知。具体而言，引入可感知的真实碰撞风险，会显著影响全局导航策略并提升临场感；听觉提示对全局导航有类似效果，还能增强共同存在感；相比之下，振动触觉反馈主要在影响局部运动方面有效。
英文摘要：
An increasing number of virtual reality applications require environments that emulate real-world conditions. These environments often involve dynamic virtual humans showing realistic behaviors. Understanding user perception and navigation among these virtual agents is key for designing realistic and effective environments featuring groups of virtual humans. While collision risk significantly influences human locomotion in the real world, this risk is largely absent in virtual settings. This paper studies the impact of the expected collision feedback on user perception and interaction with virtual crowds. We examine the effectiveness of commonly used collision feedback techniques (auditory cues and tactile vibrations) as well as inducing participants to expect that a physical bump with a real person might occur, as if some virtual humans actually correspond to real persons embodied into them and sharing the same physical space. Our results indicate that the expected collision feedback significantly influences both participant behavior (encompassing global navigation and local movements) and subjective perceptions of presence and copresence. Specifically, the introduction of a perceived risk of actual collision was found to significantly impact global navigation strategies and increase the sense of presence. Auditory cues had a similar effect on global navigation and additionally enhanced the sense of copresence. In contrast, vibrotactile feedback was primarily effective in influencing local movements.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
