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Stereoscopic three-dimensional (S3D) viewing enhances depth perception of two-dimensional (2D) images. The present study measured viewer’s ability to discern depth differences and depth change afforded by image disparities presented on an S3D display.

Sixty adults (age 24.8 +/- 3.4 years, 28% male) with binocular acuity better than 20/25 and stereoacuity better than 60 arcsec viewed test images presented on a 55” 3D TV (1920 x 1080 pixels) at 2.4m distance. In each trial, three of the four circles in the test image were with the same crossed baseline disparity of 12, 24, 36, 48, and 60 pixels, and the other (target) circle with added crossed disparity (delta disparity) of 2, 4, and 6 pixels. A subsequent change in delta disparity of the target circle (+/-2 pixels) was presented. Participant's response time and accuracy for identifying the target circle and its direction of depth change, as well as their …