Luminance spatial scale and local stereo-sensitivity.
Using filtered, broad band, fractal noise images we measured the dependence of D(min) and D(max) for stereo on luminance spatial frequency. D(min) was found to exhibit a simple dependence on the highest spatial frequency contained in the stimulus. D(max) depended on both image size and spatial frequency in a way that suggests an informational limit. Different rules govern D(min) and D(max) even for first order stereopsis, arguing against a common neural explanation based on independent access to the most pertinent spatial filter.
Hess
Robert F
RF
Department of Ophthalmology, McGill Vision Research, 687 Pine Avenue West (H4.14), Montreal, Que., Canada H3A 1A1. rhess@robert.hess@mcGill.ca
Liu
Chang Hong
CH
Wang
Yi Zhong
YZ
D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D008029:Lighting; D010775:Photic Stimulation / Q000379:methods; D011594:Psychometrics; D011601:Psychophysics; D015357:Vision Disparity / Q000502:physiology; D015348:Vision, Binocular / Q000502:physiology*