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Color‐rendering capacity of light
Author(s) -
Xu H.
Publication year - 1993
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.5080180410
Subject(s) - rendering (computer graphics) , color rendering index , spectral power distribution , computer science , artificial intelligence , reflectivity , color model , computer vision , computer graphics (images) , color space , optics , physics , light emitting diode , image (mathematics)
Two types of questions, both related to color‐rendering properties of light, can be identified. Type A: Given a spectral reflectance chip under illumination of a certain spectral power distribution, What color can appear? Does the appearing color, in comparison with a reference one, look right or distorted? Type B: Given a great many chips of different spectral reflectance functions under illumination of a certain spectral power distribution, How many different colors, no matter what colors, can appear? Are there a great many different colors or just a few different colors appearing? Questions of type A reflect an important aspect of color‐rendering properties and can be tackled with an established measure, the CIE color‐rendering index. Questions of type B, related to quite another aspect of color‐rendering properties, have particular relevance when illumination's function of making things visible is of most concern. This article discusses a new measure, the color‐rendering capacity (CRC), developed for dealing with questions of type B, and explains the measure's derivation, calculation, and implications.