ABSTRACT
The physical conditions of the display of single two-dimensional pictures, which produce images realistically, were studied by using the characteristics of the intake of the information for visual depth perception. “Depth sensitivity,” which is defined as the ratio of viewing distance to depth discrimination threshold, has been introduced in order to evaluate the availability of various cues for depth perception: binocular parallax, motion parallax, accommodation, convergence, size, texture, brightness, and air-perspective contrast. The effects of binocular parallax in various conditions, the depth sensitivity of which is greatest at a distance of up to about 10m, were studied with the new versatile stereoscopic display. From these results, four conditions to reinforce the perception of depth in single pictures were proposed, and these conditions are met by the old viewing devices and the new high-definition and wide-angle television displays.
