Y = 0.299R + 0.587G + 0.114B
U = -0.1684R - 0.3316G + 0.5B + 128
V = 0.5R - 0.4187G - 0.0813B + 128
--------------------------------------------------
保留小数后6位:
R = Y - 0.000037U + 1.401988V - 179.449700
G = Y - 0.344078U - 0.713885V + 135.419284
B = Y + 1.771795U - 0.001259V - 226.628590
--------------------------------------------------
保留小数后2位:
R = Y + 1.4V - 179.45
G = Y - 0.34U - 0.71V + 135.42
B = Y + 1.77U - 226.63
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