There has been a controversy for more than a hundred years among vision aficionados as to whether three-cone mechanisms or opponent-color processes are more fundamental to our perception of color. Evidence given in favor of trichromacy (three receptor types)are the facts that we need only three primaries to reproduce any color;that there are three major types of color-vision defects;and(from quite modern research)that there are indeed three kinds of cones with different spectral absorptions. But there is nothing about trichromacy that would predict color complementarity.
Several types of observations support the two- oppenent model,which was suggested by Goeth in 1810 and formally proposed by Ewald Hering in 1874:that across cultures red,green,yellow,and blue are usually considered "primary";that two pairs of these primaries red and green,yellow and blue-are mutually exclusive(that is,although we can imagine a yellowish red or a bluish red,we cannot imagine a greenish red;similarly we cannot imagine a bluish yellow);that pairs of color of light,like red and cyan or blue and yellow,when mixed together give white(that look at neutral you see its conplement --a cyan spot after looking at ref,a blue spot after looking at yellow,and so on.
All these arguments are persuasive,and in the end both sides have turned out to be correct. The first stage in color processing,the photoreceptor, involves three cone types,but at subsequent stages our color perception codes colors by oppenency between cone types. So,like light,which is both particulate and wavelike,color vision also has two faces:it is both trichromatic and color opponent
There has been a controversy for more than a hundred years among vision aficionados as to whether three-cone mechanisms or opponent-color processes are more fundamental to our perception of color. Evidence given in favor of trichromacy (three receptor types)are the facts that we need only three primaries to reproduce any color;that there are three major types of color-vision defects;and(from quite modern research)that there are indeed three kinds of cones with different spectral absorptions. But there is nothing about trichromacy that would predict color complementarity.
Several types of observations support the two- oppenent model,which was suggested by Goeth in 1810 and formally proposed by Ewald Hering in 1874:that across cultures red,green,yellow,and blue are usually considered "primary";that two pairs of these primaries red and green,yellow and blue-are mutually exclusive(that is,although we can imagine a yellowish red or a bluish red,we cannot imagine a greenish red;similarly we cannot imagine a bluish yellow);that pairs of color of light,like red and cyan or blue and yellow,when mixed together give white(that look at neutral you see its conplement --a cyan spot after looking at ref,a blue spot after looking at yellow,and so on.
All these arguments are persuasive,and in the end both sides have turned out to be correct. The first stage in color processing,the photoreceptor, involves three cone types,but at subsequent stages our color perception codes colors by oppenency between cone types. So,like light,which is both particulate and wavelike,color vision also has two faces:it is both trichromatic and color opponent
การแปล กรุณารอสักครู่..