Results 291 to 300 of about 580,978 (340)
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1972
The sense of sight provides us with information on how the radiance of the environment is distributed in time and space. Such information pertains to both the energy and the spectral distribution of the radiance. Researchers in the field of color vision generally assume that, as attributes of visual perception, brightness and color stem from mechanisms
Bouman, M.A., Walraven, P.L.
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The sense of sight provides us with information on how the radiance of the environment is distributed in time and space. Such information pertains to both the energy and the spectral distribution of the radiance. Researchers in the field of color vision generally assume that, as attributes of visual perception, brightness and color stem from mechanisms
Bouman, M.A., Walraven, P.L.
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Color discrimination and color appearance,
OSA Annual Meeting, 1993Color discrimination is best when the hues to be discriminated are close to the hue of a surround1.
Vivianne C. Smith, Joel Pokorny
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Journal of the Optical Society of America, 1972
The area of the gamut, in a uniform chromaticity-scale diagram of the chromaticities of a standard array of object colors, is taken to be a measure of color-discrimination capability of an illuminant. The 1960 CIE u, v chromaticity diagram, and the eight test colors of the interim method for computing a color-rendering index, are used for demonstration.
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The area of the gamut, in a uniform chromaticity-scale diagram of the chromaticities of a standard array of object colors, is taken to be a measure of color-discrimination capability of an illuminant. The 1960 CIE u, v chromaticity diagram, and the eight test colors of the interim method for computing a color-rendering index, are used for demonstration.
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1988 Engineering Management Conference, 'Engineering Leadership in the 90's'., 2003
The theory of signal detection (TSD) was applied to the detection of static, color-coded symbols presented against single-color backgrounds. The objective was to assess the utility of TSD in color discrimination research applications. The results noted for this study highlight the utility of the TSD analysis procedure for evaluating color symbol ...
D.L. Wilson, G.G. Kuperman, W.A. Perez
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The theory of signal detection (TSD) was applied to the detection of static, color-coded symbols presented against single-color backgrounds. The objective was to assess the utility of TSD in color discrimination research applications. The results noted for this study highlight the utility of the TSD analysis procedure for evaluating color symbol ...
D.L. Wilson, G.G. Kuperman, W.A. Perez
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Color‐discrimination perimetry
Color Research & Application, 1982AbstractColor‐discrimination perimetry was performed using Munsell color chips to determine how far from the fovea specific color differences would be just‐noticeably different. The results show that color‐discrimination limits were larger in the red‐to‐purple and the blue‐to‐green regions of the color circle than in the purple‐to‐blue, the green‐to ...
Hiromi Uchikawa +2 more
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Color opponency and discrimination
Journal of the Optical Society of America A, 1997The rationale for color opponency is investigated. A principle of optimal discrimination of visual information is introduced: If two visual variables are kept fixed, the third one, left free, must vary as much as possible. We prove that, if satisfied, the principle requires the existence of two chromatic functions, which are under the reference source ...
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Macular pigment and color discrimination
Visual Neuroscience, 2006An earlier modeling study of the effect of changes in macular pigment optical density (MPOD) on a wide range of surface colors is re-examined. That study reported changes in local chromaticity variance and in color spacing, some of which were incompatible with tritan-like confusions in normals associated with high-simulated MPOD.
J D, Moreland, S, Westland
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Temporal aspects of color discrimination
Journal of the Optical Society of America, 1982Experimental results obtained for different observers and stimuli are analyzed to study the influence of the exposure time of the test on the differential thresholds of color. Exposure times from 0.2 to 9 sec are studied. A minimum for the differential thresholds of luminance and chromaticity and for the global differential threshold is found around 1 ...
E, Hita +3 more
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Color Discrimination in the Cat
Science, 1964Red-green color discrimination by cats was demonstrated in a situation which effectively eliminated cues based on relative brightness. The persistence of the cat's response to cues based on brightness differences may help to account for the failure of previous experiments to show that cats can make behavioral color discriminations.
J A, SECHZER, J L, BROWN
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Color constancy and color discrimination
Annual Meeting Optical Society of America, 1985I have been studying the implications of the hypothesis that the mechanisms of light adaptation compute an internal representation of the retinal image that discounts the spectral power distribution of the ambient light in order to estimate the surface spectral reflectances of objects in the image. I review two consequences of this hypothesis for color
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