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图学学报 ›› 2025, Vol. 46 ›› Issue (4): 793-806.DOI: 10.11996/JG.j.2095-302X.2025040793

• 计算机图形学与虚拟现实 • 上一篇    下一篇

虚拟现实重定向行走中的场景缩放增益研究

杜欣1,2(), 任洋甫1,2,3(), 胥森哲4, 王巨宏5, 郑宇飞5, 张松海1,2,3   

  1. 1.青海大学计算机技术与应用学院,青海 西宁 810016
    2.青海省智能计算与应用实验室,青海 西宁 810016
    3.清华大学计算机科学与技术系,北京 100084
    4.北京科技大学计算机与通信工程学院,北京 100084
    5.深圳市腾讯计算机系统有限公司,广东 深圳 518000
  • 收稿日期:2024-10-05 修回日期:2025-02-06 出版日期:2025-08-30 发布日期:2025-08-11
  • 通讯作者:任洋甫(1988-),男,讲师,博士研究生。主要研究方向为计算机图形学与虚拟现实。E-mail:ryf21@mails.tsinghua.edu.cn
  • 第一作者:杜欣(2000-),女,硕士研究生。主要研究方向为虚拟现实。E-mail:du_xin2024@163.com
  • 基金资助:
    国家重点研发计划项目(2023YFF0905104);国家自然科学基金(62132012);国家自然科学基金(62402281);清华-腾讯互联网创新技术联合实验室项目

Investigation of scene scaling gains in redirected walking within virtual reality

DU Xin1,2(), REN Yangfu1,2,3(), XU Senzhe4, WANG Juhong5, ZHENG Yufei5, ZHANG Songhai1,2,3   

  1. 1. College of Computer Technology and Application, Qinghai University, Xining Qinghai 810016, China
    2. Qinghai Provincial Laboratory of Intelligent Computing and Applications, Xining Qinghai 810016, China
    3. Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China
    4. School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100084, China
    5. Tencent Computer System Co., Ltd., Shenzhen Guangdong 518000, China
  • Received:2024-10-05 Revised:2025-02-06 Published:2025-08-30 Online:2025-08-11
  • First author:DU Xin (2000-), master student. Her main research interest covers virtual reality. E-mail:du_xin2024@163.com
  • Supported by:
    National Key Research and Development Program of China(2023YFF0905104);National Natural Science Foundation of China(62132012);National Natural Science Foundation of China(62402281);Tsinghua-Tencent Joint Laboratory for Internet Innovation Technology Program

摘要:

虚拟现实(VR)技术的不断发展为人们提供了沉浸式的体验,在虚拟环境(VE)中如何优化用户的感知和行走效率仍是一个亟需探讨的问题。基于此,通过用户实验探究了用户对VE中尺度变化的缩放增益感知阈值、用户对于场景缩小极限的接受度以及对场景缩放和平移增益叠加效应的接受度以优化VE的交互体验。首先,通过设置不同缩放增益下的虚拟场景让被试者执行目标跟随任务,收集并分析了3种场景下的被试者感知数据,发现被试者对VE尺度变化的缩放增益感知阈值存在一定的范围,虚拟场景的尺寸和环境中物体的密度等场景特性均显著影响被试者的缩放增益感知阈值。不同场景中,被试者对场景缩放的敏感度有显著差异,被试者的感知很大程度上依赖于场景本身的特性,虚拟场景的尺寸越小,环境内物体密度越高,则被试者的缩放增益感知阈值范围越窄。此外还通过李克特量表评估了被试者对场景极限缩小的接受度,发现过度缩小会显著降低被试者的舒适度并不利于被试者体验。实验结果表明,缩放增益与平移增益的叠加对用户感知影响较小,用户对此表现出低不适感和高接受度。

关键词: 虚拟现实, 重定向行走, 缩放增益, 感知阈值, 平移增益

Abstract:

The continuous advancement of virtual reality (VR) technology offers increasingly immersive experiences. However, optimizing user perception and walking efficiency in virtual environments (VE) remains a pressing challenge. This study conducted user experiments to investigate the perception threshold of scaling gain, user acceptance of extreme scene downscaling, and the combined effects of scaling and translational gains, aiming to enhance interaction experiences in virtual environments. First, subjects performed a target-following task in virtual scenes with varying scaling gains. Perception data was collected across three different scenarios, revealing a discernible range of perception thresholds for scaling gain. Scene characteristics, including virtual scene size and object density, significantly influenced the perception thresholds. Subjects demonstrated varying sensitivity to scaling gain across different scenarios, with smaller virtual environments and higher object density resulting in narrower perception threshold ranges. Additionally, a Likert scale was used to evaluate subject acceptance of extreme scene downscaling. The results indicated that excessive downscaling substantially reduced comfort and negatively impacted user experience. Furthermore, experiments on the combined effects of scaling and translational gains showed minimal impact on user perception, with participants reporting low discomfort and high acceptance of the combined gains.

Key words: virtual reality, redirected walking, scaling gain, perceptual thresholds, translation gain

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