trichromatic

, trichromic

1. Photog Printing involving the combination of three primary colours in the production of any colour

2. of, relating to, or having normal colour vision

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

trichromaticity

The principle of human color perception. The retina in the human eye contains cone cells with three different kinds of proteins, and each protein absorbs a different color. One is more sensitive to blue, and the other two are more sensitive to yellow. The difference between the two types of yellow cones determines a range of green to red. Hence, red, green and blue (RGB). See tristimulus, RGB and YUV.

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References in periodicals archive

(12) A further 12% of women are heterozygous for a gene that produces anomalous trichromatism in men.

(15,16) There is no mechanism for changing peak wavelength sensitivity and the term 'tritanomalous trichromatism' is misleading.

Colour vision deficiency part 1--an introduction

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