KEYWORDS: 3D displays, Eye, Visualization, Cones, Image processing, 3D image processing, Calibration, Colorimetry, Information technology, Color vision
As an important feature of image, color can be used to achieve binocular vision. However, different colors may have different contributions. In this experiment, we designed a stimulus in which luminance is incongruent and color could be manipulated. Color variations were based on opponent color space, where seventeen color points distributing in red-green and blue-yellow directions were selected. The stimulus consisted of an array of asymmetric patches uniformly distributed in a constant sized volume. Subjects were required to indicate the amount of perceived depth patches in the 3D displays. Our results demonstrate that the amount of perceived depth patches was influenced by color information, and indicate that colors have different contributions to binocular matching.
KEYWORDS: 3D displays, Visualization, Eye, Stereo holograms, Color vision, Lutetium, Autostereoscopic displays, Information science, Information technology, Brain
Stereoacuity, or named stereoscopic acuity, is the minimum disparity that can be perceived by someone with two eyes and normal brain functions. It is extremely relevant to human stereopsis and considerable individual variability. Due to the contribution of color information to stereopsis is controversial, this study is focused on designing and conducting a stereoacuity test for different colors. In particular, the effect of color variations on stereoacuity was evaluated by using 3D displays to present color random-dot stereogram (RDS) stimuli. Seventeen color points sampled from the CIELAB color space were selected for the test. All sample color points are averagely distributed in red-green and yellow-blue directions at isoluminance. The stimuli had the same dot density of 50% and black background, with different colors and disparities. Then the minimum disparity was obtained as the stereoacuity of subject. The results of experiment show that the stereoacuities are not significantly different in red-green direction and blue-yellow directions. These results support the view that color does not contribute to the stereoacuity.
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