体感交互虚拟漫游的沉浸感评价  

Immersion evaluation of virtual roaming with proprioceptive interaction

作　　者：周强[1] 张敏雄 吴新丽[1] 李昕[1] 黄金鹏[1] 杨文珍[1] 潘志庚[2,3] ZHOU Qiang;ZHANG Min-xiong;WU Xin-li;LI Xin;HUANG Jin-peng;YANG Wen-zhen;PAN Zhi-geng(Virtual Reality Laboratory,Zhejiang Sci-Tech University,Hangzhou Zhejiang 310018,China;Digital Media&Interaction Research Center,Hangzhou Normal University,Hangzhou Zhejiang 311121,China;Guangzhou NINED Digital Technology Co.Ltd,Guangzhou Guangdong 510623,China)

机构地区：[1]浙江理工大学虚拟现实实验室,浙江杭州310018 [2]杭州师范大学数字媒体与人机交互研究中心,浙江杭州311121 [3]广州玖的数码科技有限公司,广东广州510623

出　　处：《图学学报》2020年第3期342-349,共8页Journal of Graphics

基　　金：广州创新创业领军团队项目(CXLJTD-201609);浙江省自然科学基金项目(LY20F020019,LQ19F020012,LQ20F020001);国家重点研发计划项目(2018YFB1004901);浙江省基础公益研究计划项目(LGF19E050005)。

摘　　要：沉浸感是虚拟漫游的重要特征,目前体感交互的虚拟漫游存在严重的感知失真问题,虚拟场景运动的视觉感知与人机交互的体感感知不能相互匹配,破坏了虚拟漫游的沉浸感。基于Catmull-Rom曲线的非等距插值算法、等距插值算法和实时插值算法,分别构建3种不同的虚拟漫游路径,评价体感交互虚拟漫游的沉浸感。主观评价实验和仿真实验的结果表明:Catmull-Rom曲线的非等距插值漫游路径,无论是匀速漫游还是变速漫游,均存在明显的感知失真现象;基于Catmull-Rom曲线的等距插值漫游路径适用于匀速漫游,但不太适合用于变速漫游;基于Catmull-Rom曲线的实时插值漫游路径能实现真实运动速度与场景运动速度的匹配,较好地解决虚拟漫游时视觉感知与身体运动感知不一致的问题,增强了虚拟漫游的沉浸感。Immersion is significantly characteristic of virtual roaming. Currently perceptual distortion is a serious problem in virtual roaming with proprioceptive interaction. Thus, the visual perception of virtual scene motion cannot match the somatosensory perception, which undermines the immersion of virtual roaming. The curve non-equidistant interpolation algorithm, isometric interpolation algorithm and the real-time interpolation algorithm were established based on Catmull-Rom curve, so as to carry out the immersion evaluation of virtual roaming with proprioceptive interaction. The results of subjective evaluation experiments and simulation experiments show that the non-equidistant interpolated roaming paths of Catmull-Rom curves had obvious somatosensory distortions both in uniform roaming and in variable-speed roaming. The equidistant interpolation roaming path based on Catmull-Rom curve was suitable for uniform roaming, but unsuitable for variable-speed roaming. The real-time interpolated roaming path based on Catmull-Rom curve can match the real-motion speed with the scene-motion speed, thus solving the inconsistency between the visual perception and body motion perception in virtual roaming. Therefore, the proposed algorithms can improve the immersion of virtual roaming.

关 键 词：虚拟漫游 体感交互 Catmull-Rom曲线 漫游路径 沉浸感评价 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]