29 June 2004 Psychophysical effect of retouched and modified digital stereograms for binocular vision on depth perception
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A stereogram differs from the 3D picture often called stereo pair in appearance. There is no need of special viewer or glasses for stereopsis when viewing the sterograms. It is possible to intuitively carry out the intuitive estimation of depth perception by simultaneously viewing two pairs of stereograms which are arranged the upper and lower sides, or the right and left sides. In this study, modified digital color stereograms are directly viewed on the LCD screen or hard copy images by means of (a) crossing view method or (b) parallel view method. The apparent depth perception of stereograms can be effectively demonstrated by an adjustment of the viewing distance between the eye position of an observer and the plane of a stereogram rather than by altering the size and its arrangement of basic patterns which construct the plane images for steropsis. The visual effect of depth perception in the modified digital stereogram using sharpening filtering operation are discussed in connection with the modified various stereograms under the specified conditions: the number of pixel resolution and color bit levels.
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Masayuki Iizuka, Masayuki Iizuka, Masato Nishimoto, Masato Nishimoto, Hiroyasu Shirafuji, Hiroyasu Shirafuji, Yoshio Ookuma, Yoshio Ookuma, Yoshio Nakashima, Yoshio Nakashima, Mamoru Takamatsu, Mamoru Takamatsu, } "Psychophysical effect of retouched and modified digital stereograms for binocular vision on depth perception", Proc. SPIE 5290, Practical Holography XVIII: Materials and Applications, (29 June 2004); doi: 10.1117/12.523918; https://doi.org/10.1117/12.523918

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