Stereopsis at isoluminance
نویسندگان
چکیده
منابع مشابه
Stereopsis at isoluminance in the absence of chromatic aberrations.
Stereo (front-back) discrimination thresholds were measured in a two-interval forced-choice paradigm for chromatic (red-green) random-dot stereograms that had all detectable longitudinal and transverse aberrations removed by low-pass filtering. The thresholds were measured as a function of the luminance ratio of the red and the green stereo elements. Although individual differences were apparen...
متن کاملOn the apparent collapse of stereopsis in random-dot-stereograms at isoluminance
We have investigated the apparent collapse of stereopsis obtained with random-dot-stereograms at isoluminance. Contrast thresholds for both depth and form discrimination of targets in random-dot- and figural stereograms were measured at a number of disparitics, using both isoluminant and isochromatic stimuli. All contrast thresholds for stereoscopic tasks were normalised to contrast thresholds ...
متن کاملGeometric-optical illusions at isoluminance
The idea of a largely segregated processing of color and form was initially supported by observations that geometric-optical illusions vanish under isoluminance. However, this finding is inconsistent with some psychophysical studies and also with physiological evidence showing that color and luminance are processed together by largely overlapping sets of neurons in the LGN, in V1, and in extras...
متن کاملThe missing-fundamental illusion at isoluminance.
The missing-fundamental illusion describes how a square wave with its fundamental Fourier component removed appears as a square wave. This illusion is normally explained with reference to the bandpass nature of the luminance-contrast-sensitivity function, together with a 'default-to-square-wave' rule. Since the chromatic-contrast-sensitivity function is low-pass, we should not expect a missing-...
متن کاملThe Isoluminance Contour Model
A standard method of simplifying the task of obtaining a shaded image of a solid object is to represent it by a collection of surface patches or a polyhedron. A smooth shading technique is then applied to each patch/facet to restore smoothness to the image. This paper introduces an entirely new approach to surface representation: the use of isoluminance contours to represent CSG-type primitive ...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/7.9.806