ITU-R BT.601(用于标清电视)5 x8 {; \, l T2 L- E
RGB → YCbCr' G' D' d% W1 x! i+ ?3 h6 q2 s
Y = 0.29900 × R + 0.58700 × G + 0.11400 × B3 e4 R8 @: E) [
Cb = -0.16874 × R - 0.33126 × G + 0.50000 × B5 L4 G3 t% z4 Q! m( F- G
Cr = 0.50000 × R - 0.41869 × G - 0.081 × B
4 k3 K0 D, l1 r, BYCbCr → RGB
) d: t9 n2 u3 z6 G! HR = Y + 1.40 200 × Cr3 L9 F9 U! r% g: P, ^6 y5 l
G = Y - 0.34414 × Cb - 0.71414 × Cr
' p% Q) ?% q, O5 \, N# E4 ZB = Y + 1.77200 × Cb
" B" F! c* w0 aITU-R BT.709(用于高清电视)* Y5 `) \- m: {% J
RGB → YPbPr
: `% U- e$ F2 T) U- @* VY = 0.2126 × R + 0.7152 × G + 0.0722 × B3 z6 x, n7 Y; T3 ~3 E( [; Y/ K
Pb = -0.1146 × R - 0.3854 × G + 0.5000 × B
- h* ^6 l: m# U: rPr = 0.50000 × R - 0.4542 × G - 0.0458 × B7 q6 M$ }) r4 J& u8 q
YPbPr → RGB
~* y, K7 b0 _1 \' b- {R = Y + 1.5748 × Pr8 U% y- J/ ^8 p. j6 X7 B
G = Y - 0.1873 × Pb - 0.4681 × Pr* s- {5 y3 \7 s" {3 a# q( p
B = Y + 1.8556 × Pb |