Chrominance

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Categories: Digital Basics, Images

Also known as “color-difference” the term chrominance referrs to color part of a television signal, the part conveying hue and saturation but not the brightness (luminance) of the signal. Thus pure black, gray and white have no chrominance, but any colored signal has both chrominance and luminance. Although imaging equipment registers red, blue and green, television pictures are handled and transmitted as U and V, Cr and Cb, or (R-Y) and (B-Y), which all represent the chrominance information of a signal, and the pure luminance (Y).

See also: YUV, Y,Cr,Cb, Composite