YUV and luminance considered harmful:
A plea for precise terminology in video

Abstract

The notation YUV, and the term luminance, are widespread in digital video. However, digital video almost never uses Y'UV color difference components, and never directly represents the luminance of color science. The common terms are almost always wrong. This note explains why. I urge video engineers and computer graphics specialists to use the correct terms, almost always Y'C_BC_R and luma

Complete paper

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