[Paper] Ratio of Pseudo-Stereoanomalous Young Adults and Improvement of Their Stereopsis in 3D-Graphic Environments: Study for Depth Perception Based on the Use of Disparity and Shading
Hirotaka Fujisaki, Haruto Yamashita, Ken Kihara, Sakuichi Ohtsuka · ITE Transactions on Media Technology and Applications · 2013
We investigated the individual differences in the use of binocular disparity and proposed a method for improving stereopsis in observers who do not perceive depth from disparity in 3D-graphic environments.In Experiment 1, non-stereoanomalous observers, aged 19-25 years, were asked to roughly evaluate the depth of 3D-graphcial stimuli containing binocular disparity and shading.The results of Experiment 1 showed 30% of the observers were pseudo-stereoanomaly who perceived depth only from shading.In Experiment 2, 60% of the pseudo-stereoanomalous observers were able to use disparity when they had to assess the depth concretely.In Experiment 3, all of the observers who participated in Experiment 2 learned to use the disparity information when retasked with roughly estimating again.These results suggest that quite a few people have difficulty in experiencing rich depth perception in current 3D-graphic environments.However, appropriate training procedures would improve their use of disparity information over the long term.