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J. Yuan; Factors Involved in the Natural Image Stereoscopic Fusion . Invest. Ophthalmol. Vis. Sci. 2003;44(13):4818.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To test the best range of natural image qualities on stereoscopic presentation. After Julesz (1960) the RDS (Random Dot Stereogram) has been studied a lot. But the stereoscopic of natural image has been less studied. RDS is always being manipulated in a discrete binocular disparity, and without monocular cues. Oppositely natural image are rich of monocular depth cues, and always with monocular depth cues. So, there is almost no negative disparity in natural image stereogram. Once we want to purchase the 3D presentation of natural images on computer screen, we would like to know more detail about the human vision on these fields. The manipulate factors include the images brightness, ghost (cross-talk) simulation, static and motion images. Methods: Use two CRT screen to present the binocular picture patterns. In static condition, we use GR450 and GeForce double screen card, to present the images on two screens. In kinematogram situation, we let one computer control the other two computers, to display the films to left and right eyes simultaneously. The moving pictures were generated by 3DsMax software. Results: The tolerance range of ghost effect is 0.2, which is bigger than the hardware tolerance. Too bright images will break down the binocular fusion, though the dark images has better tolerance. When the left and right images have quite different illumination range, subjects still can fuse very well. Bi-screen correction is far better than the required range of human eyes. Subjects can see good and smooth motion of natural images film in kinematogram, but if the film has fast motion contents, then the 2D motion cues will dominate on binocular disparity cues. Conclusion: The human eye is so powerful to do stereoscopic fusion on natural images. Stereoscopic fusion of static natural images, are far better than kinematogram fusion. 2D motion cues on depth perception might dominate over binocular kinematogram cues. CR: None.
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