虚拟环境中最佳观察视场角的实验研究  

Research on Optimum Field Viewing Angles of Virtual Environment

作　　者：周前祥[1] 姜国华[2] 曲战胜[2] 朱彦军[2] 

机构地区：[1]上海交通大学电子信息学院,上海200030 [2]航天医学工程研究所,北京100094

出　　处：《人类工效学》2002年第2期11-15,共5页Chinese Journal of Ergonomics

摘　　要：虚拟环境视场角的设置对其能否真实地模拟现实场景和被试者对其中目标判断 (即大小和角度判断 )有很大的影响 ,为此文章进行了最佳的观察视场角的实验研究。首先选定被试并在基于PC平台的虚拟现实工效学实验系统上进行一定人次的预实验 ,确定虚拟环境中进行实验时观察任务的差别和视场角的影响等级 ,然后 4 5名被试头戴头盔进行单因素、4水平的完全随机实验。方差分析表明 ,虚拟环境中视场角设置对人的判断工效具有显著性影响 ,同时 ,当视场角为 6 0°时 ,被试对其中目标判断的准确性最大。因此 ,利用VR技术进行工效设计、操作训练或其他任务的研究时 ,应考虑视场角的作用 ,它的值宜取 6 0° 。The optimum field viewing angle of the highest human judgement reliability for objects in virtual environment was investigated in this paper. Firstly, some person\|times pre\|tests were done with the PC virtual reality ergonomic system to determine difference of observing object and levels of field viewing angle. Then, 45 healthy persons (male and female nearly 1:1) with HMD are done one factor, 4 levels full random experiment. By one\|way ANOVA, the reliability of human judgement was significantly influenced by setting of field viewing angle of virtual environment. In addition, when it was 60 degrees, judgement of the subjects to object in virtual environment was the best. On applying virtual reality to ergonomic design, operation train and other research, the effect of field viewing angle should be taken into consideration, and if its value was advised to be 60 degrees, the virtual environment would be favorable for human judgment task.

关 键 词：实验研究 虚拟环境 工效学 单因素 完全随机实验 视场角 

分 类 号：R857.1[医药卫生—航空、航天与航海医学]