Perception of depth movement and temporal frequency characteristics of stereoscopic vision

Abstract

AbstractThe repetition frequency and the maximum disparity in stereoscopic vision where depth movement is perceived are determined using a static random dot stereogram (SRDS). Furthermore, the temporal frequency characteristics of the maximum fusible disparity are determined using a dynamic random dot stereogram (DRDS). The results show that in both cases, as the frequency of depth movement increases, the maximum fusible disparity decreases. For sine waves above 15 Hz and square waves above 7.5 Hz, binocular fusion is not possible when the target is the SRDS. For both sine and square waves above 7.5 Hz, binocular fusion is not possible when the target is the DRDS. In both cases, binocular fusion is only possible at lower frequencies. It is clear that compared to SRDS, the maximum fusible disparity is larger for DRDS when the center of motion is set on the plane of the screen and becomes smaller when the center of depth motion is shifted off the screen as the shift of the center of motion increases or fusion becomes impossible in the high frequency range.