ITU-R BT.601(用于标清电视)
/ X: ?1 c, j6 E: KRGB → YCbCr6 l* k/ s! Z+ r1 Z' c: X
Y = 0.29900 × R + 0.58700 × G + 0.11400 × B
1 q! F+ E& V! R, ^- e4 SCb = -0.16874 × R - 0.33126 × G + 0.50000 × B
3 F, P% r$ ?6 j: HCr = 0.50000 × R - 0.41869 × G - 0.081 × B
3 E9 j8 h( h, d6 d' o$ \, \YCbCr → RGB
+ M: x8 Y; i4 p' _2 xR = Y + 1.40 200 × Cr+ Z# P0 X5 m6 H4 E1 t {. H- h
G = Y - 0.34414 × Cb - 0.71414 × Cr2 A3 V" Q7 i) S9 b
B = Y + 1.77200 × Cb
: O- W$ p/ b! g$ X+ ?ITU-R BT.709(用于高清电视)0 ] y* \5 K! N: B. `" k+ k* ^* t
RGB → YPbPr
% J# X! \8 l xY = 0.2126 × R + 0.7152 × G + 0.0722 × B
}! \9 h; P( U: F" U' APb = -0.1146 × R - 0.3854 × G + 0.5000 × B
- P- w1 `( G8 ]2 S' B. YPr = 0.50000 × R - 0.4542 × G - 0.0458 × B
) C, i+ u) X$ XYPbPr → RGB
6 G& U3 A; d+ ]2 q1 J2 M2 {0 VR = Y + 1.5748 × Pr
8 H: }3 Z) [* w7 C' V1 [ xG = Y - 0.1873 × Pb - 0.4681 × Pr& D2 f* ]! e! p$ j$ j- s. r' Q
B = Y + 1.8556 × Pb |