Depth Perception of Simple Stimuli by Motion Parallax

Abstract

We investigated the accuracy and the precision of motion parallax information for depth perception of simple-object stimuli. When depth varied on the horizontal direction, the accuracy of motion parallax for perceived depth of the simple-object stimuli was not significantly different from the accuracy for the random-dot-pattern stimuli. When depth varied on the vertical direction, the bottom part of the simple-object stimulus tended to be perceived closer. However, when the perceived depth relationship was correct, the accuracy of perceived depth of the simple-object stimuli was not significantly different from that of the random-dot-pattern stimuli. The precision did not change significantly for the simple-object stimuli and for the random-dot-pattern stimuli. These results proved experimentally that motion parallax information was useful for depth perception even for simple-object stimuli.