Subjective evaluation is one of the most important methods of assessing the fidelity of a virtual dynamic
scene, whose results could be seen as a reference to improve a rendering method. In the present study, we apply
a rendering method to the color rendezvous and docking (RVD) scene, where one shadow algorithm and three
tone mapping operator algorithms are used to process the scene based on the distance between two spacecrafts.
The grayscale RVD scene is transformed from the color RVD scene, and each RVD scene is desired to make
comparisons with the real RVD-video recorded in SZ-10 mission. In addition, we perform an evaluation on 36
subjects to compare the results. The results show that shadow effects have important roles in RVD virtual scenes,
where they enhance the sense of realism and immersion. Shadows, high brightness, contrast and luminance are
highly correlated with the overall preference, and the grayscale scene receives better evaluations than the color
scene. The analysis of these conclusions is vital for improving the algorithms used to render color virtual space
scenes when virtual scenes for astronaut training in Chinese space station mission are prepared.
ZHAO Zai-qian (赵再骞), CHAO Jian-gang (晁建刚), ZHANG Yan (张炎),WANG Jin-kun (王金坤), HU Hong* (胡弘)
. Comparison of Color and Grayscale Simulated TV-Graphics in Rendezvous and Docking[J]. Journal of Shanghai Jiaotong University(Science), 2015
, 20(1)
: 68
-75
.
DOI: 10.1007/s12204-015-1590-2
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