منابع مشابه
Equilibrium hue judgements of dichromats.
It is generally held that protanopes and deuteranopes see only regions of blues and yellows in the visible spectrum, with an achromatic point, called the neutral point, separating these regions. Considerations of a zone model of color vision for the dichromatic observer led us to predict that a reduced form of red/green discrimination would allow equilibrium blue judgements to be made by protan...
متن کاملThe Color Vision of Dichromats
1. Protanopes and deuteranopes show one maximum of wavelength discrimination which occurs near their neutral point in the region of 500 mmicro (blue-green for color-normal). The value of the just discriminable wavelength interval Deltalambda is about 1 mmicro at this point and is much like the normal. To either side of this, Deltalambda rises. It increases rapidly on the short-wave side, and sl...
متن کاملModeling color percepts of dichromats
Protanopes and deuteranopes, despite lacking a chromatic dimension at the receptor level, use the color terms "red" and "green", together with "blue" and "yellow", to describe their color percepts. Color vision models proposed so far fail to account for these findings in dichromats. We confirmed, by the method of hue scaling, the consistent use of these color terms, as well as their dependence ...
متن کاملComputerized simulation of color appearance for dichromats.
We propose an algorithm that transforms a digitized color image so as to simulate for normal observers the appearance of the image for people who have dichromatic forms of color blindness. The dichromat's color confusions are deduced from colorimetry, and the residual hues in the transformed image are derived from the reports of unilateral dichromats described in the literature. We represent co...
متن کاملSpectral tuning of dichromats to natural scenes
Multispectral images of natural scenes were collected from both forests and coral reefs. We varied the wavelength position of receptors in hypothetical dichromatic visual systems and, for each receptor pair estimated the percentage of discriminable points in natural scenes. The optimal spectral tuning predicted by this model results in photoreceptor pairs very like those of forest dwelling, dic...
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ژورنال
عنوان ژورنال: Vision Research
سال: 1987
ISSN: 0042-6989
DOI: 10.1016/0042-6989(87)90013-7