虚拟环境中空间压缩问题的影响与改善

Influence and Improvement of Space Compression in Virtual Environment

中文关键词: 虚拟环境  距离感知  距离压缩  改善方法

英文关键词: virtual environment  distance perception  space compression  improvement method

中文摘要:

      目的 空间压缩问题是虚拟现实(Virtual Reality, VR)技术1个很重要的技术瓶颈，为了使该技术被更好地推广与使用，虚拟环境(Virtual Environment, VE)中空间压缩这个瓶颈问题必须得到有效的解决或改善。本研究从认知视角就虚拟环境中空间压缩问题产生的原因、特征和规律、影响因素和补偿方案进行了系统地分析和探讨，以最终达到有效解决或改善空间压缩以提高保真度和用户的体验需求并最终促进VR技术广泛应用的目的。方法 采用跨学科交叉分析和文献调研分析的方法，分别对认知心理学、人机交互和计算机科学等不同领域的大量相关文献进行了充分的检索和分析，系统梳理了虚拟环境中空间压缩效应的特点和规律，同时重点从个体认知和技术层面系统探讨了虚拟环境中产生空间压缩现象的原因，并基于此提出减小空间距离压缩效应、提高用户体验的具体解决方案。结论 基于多感觉整合理论，对空间距离压缩效应产生的机理进行了深入分析，并提出在认知视角下通过提供双眼视差和丰富的深度线索，增强用户的存在感，以及在虚拟环境中提供不一致环境来提高虚拟环境距离估计的准确性，最终达到有效解决或改善空间压缩问题的目的。

英文摘要:

      Space compression is an important technical bottleneck of virtual reality technology. In order to promote and use this technology more broadly, the problem must be effectively solved. The causes, characteristics, influencing factors and compensation schemes of spatial compression in VE are analyzed systematically from a cognitive perspective, so as to effectively solve or improve distance compression to enhance fidelity and users' experience and ultimately promote the wide application of VR technology. The methods of literature research and interdisciplinary analysis were adopted to retrieve and analyze a large number of related literatures in cognitive psychology, human-computer interaction and computer science and systematically sort out the characteristics and laws of spatial compression effect in VE. At the same time, the causes for the spatial compression in VE were discussed from the perspective of individual cognition and technology, and based on this, the specific solutions were proposed to reduce the space compression effect and improve the users' experience. Based on the theory of multi-sensory integration, an in-depth analysis is carried out on the mechanism of the distance compression effect. It is proposed that in the cognitive perspective, the users' sense of presence can be enhanced by providing binocular parallax and rich depth cues and the inconsistent environment can be provided in VE to improve the accuracy of distance estimation in VE, thus finally achieving the purpose of effectively solving or improving the distance compression problem.