[Effects of field viewing angles on object judgement [correction of jubgerent] in virtual environment].
OBJECTIVE
To investigate the effect of viewing angle on human judgement reliability for objects in virtual environment.


METHODS
Firstly, pre-tests were done with the PC virtual reality ergonomic system to determine difference among observed object and values of viewing angle. Then, one factor, 4-levels full random experiments were done with 45 health human subjects (male and female nearly 1:1).


RESULTS
It was shown that the reliability of human judgement was significantly influenced by the setting of the viewing angle of virtual environment, and the object judgement including size and angle judgement was the best when the viewing angle of virtual environment was 60 degrees.


CONCLUSIONS
When virtual reality was used in ergonomic design, operation training and other related research, the effect of field viewing angle should be taken into consideration, and 60 degrees is recommended to be optimal for human judgment task.
Zhou
Qian-xiang
QX
Institute of Space Medico-Engineering, Beijing, China. zqxg@sjtu.edu.cn
Jiang
Guo-hua
GH
Qu
Zhan-shen
ZS
Zhu
Yan-jun
YJ
D000328:Adult; D006804:Ergonomics; D005260:Female; D006801:Humans; D007600:Judgment; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012858:Size Perception; D013028:Space Perception; D014584:User-Computer Interface; D014785:Vision, Ocular; D014796:Visual Perception