| 单词 | chromaticity |
| 释义 | chromaticity An objective description of the colour quality of a visual stimulus that does not depend on its luminance but which, together with its luminance, completely specifies the colour. The colour quality is defined in terms of chromaticity coordinates , x,y, and z, where x = X/(X + Y + Z) y = Y/(X + Y + Z) and z = Z/(X + Y + Z) X, Y, and Z are the tristimulus values of a light, i.e. they are the amounts of three reference stimuli needed to match exactly the light under consideration in a trichromatic system |
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