The CIE 1964 ( U *, V *, W *) color space , also known as CIEUVW , is based on the CIE 1960 UCS :
6-661: UVW may refer to: The CIE 1964 color space , often abbreviated as UVW Unie van Waterschappen [ nl ] , an umbrella organization for Dutch water boards United Vehicle Workers , a former trade union in Britain (1919 - 1922) United Voices of the World , an independent grassroots trade union in Britain Universitätsverlag Wagner [ wikidata ] , an Austrian academic publisher UVW mapping ,
12-466: A mathematical technique for coordinate mapping University of Virginia's College at Wise , a public liberal arts college in Wise, Virginia Unloaded Vehicle Weight, the weight of a vehicle as manufactured at the factory Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title UVW . If an internal link led you here, you may wish to change
18-500: Is increased or decreased, respectively, and the chromaticity ( u , v ) is kept constant". The chromaticity coefficients were chosen "on the basis of the spacing of the Munsell system. A lightness difference Δ W = 1 is assumed to correspond to a chromaticness difference √ Δ U + Δ V = 13 (approximately)." With the coefficients thus selected, the color difference in CIEUVW
24-592: Is the luminous tristimulus value of the object. The asterisks in the exponent indicates that the variable represent a more perceptually uniform color space than its predecessor (compare with CIELAB ). Günter Wyszecki invented the UVW color space in order to be able to calculate color differences without having to hold the luminance constant. He defined a lightness index W * by simplifying expressions suggested earlier by Ladd and Pinney, and Glasser et al. . The chromaticity components U * and V * are defined such that
30-422: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=UVW&oldid=1073594137 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages CIE 1964 color space where ( u 0 , v 0 ) is the white point and Y
36-452: The white point maps to the origin, as in Adams chromatic valence color spaces . This arrangement has the benefit of being able to express the loci of chromaticities with constant saturation simply as ( U *) + ( V *) = C for a constant C . Furthermore, the chromaticity axes are scaled by the lightness "so as to account for the apparent increase or decrease in saturation when the lightness index
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