Stereoscopic depth discrimination with contrast windowed stimuli.
Depth discrimination with a shifted contrast window was compared to that with a fixed contrast window. Stereoscopic performance with the fixed window was limited to small disparities and varied with spatial frequency. Performance with the shifted window extended to larger disparities and was more similar for low and high spatial frequencies. The results depended upon window shape, indicating that edge blur is an important factor. Stereoscopic performance with shifted patterns was supported at disparities larger than a phase disparity model might predict, suggesting that a combination of position and phase disparity computations are used for the perception of stereoscopic depth.
Buckthought
Athena
A
Centre for Vision Research, Computer Science Bldg. Rm. B0002E, York University, 4700 Keele St., Toronto, Ont., Canada M3J 1P3. buckthought@cvr.yorku.ca
Stelmach
Lew B
LB
D015350:Contrast Sensitivity / Q000502:physiology*; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D008960:Models, Psychological; D011601:Psychophysics; D015348:Vision, Binocular