ITU-R BT.601(用于标清电视)2 g3 ?' ~* P- K; X
RGB → YCbCr% a" i+ G |! T" c8 r( E
Y = 0.29900 × R + 0.58700 × G + 0.11400 × B1 \5 \) ~* {, `
Cb = -0.16874 × R - 0.33126 × G + 0.50000 × B
P* H5 d' a, e4 V. aCr = 0.50000 × R - 0.41869 × G - 0.081 × B$ B2 R* M8 b: V& e; @3 u
YCbCr → RGB7 ~0 ~6 X/ S2 q# Z% O
R = Y + 1.40 200 × Cr/ L5 U' ~- ?; v& Z
G = Y - 0.34414 × Cb - 0.71414 × Cr
! {6 N, w( F8 R* a3 OB = Y + 1.77200 × Cb0 R- \6 ]: ~. p1 r
ITU-R BT.709(用于高清电视); y) I7 l* i: V$ g! T9 w
RGB → YPbPr: p B9 Z! x; f$ k# Y
Y = 0.2126 × R + 0.7152 × G + 0.0722 × B
V8 N& S9 F0 y: t' a6 ? vPb = -0.1146 × R - 0.3854 × G + 0.5000 × B
' p9 ?* h0 s' m% }# i* lPr = 0.50000 × R - 0.4542 × G - 0.0458 × B* D% v3 O; u9 ]
YPbPr → RGB& U2 [/ T7 }' p, v, Q
R = Y + 1.5748 × Pr9 D4 ^' e2 g; B- S3 \: ~; X4 \
G = Y - 0.1873 × Pb - 0.4681 × Pr. D4 G; Z v* L$ r s0 `' V- f
B = Y + 1.8556 × Pb |