RGB/YCrCb Conversion in Floating Point

• Nested formulas

0.2989 0.5866 0.1145 0.5000 -0.4183 -0.0817-0.1688 -0.3312 0.5000

1 1.4022 0  1 -0.7145 -0.3458 1 0 1.7710

• Matrix multiplication

[Y Cr Cb]T = M [R G B]T

[R G B]T = M [Y Cr Cb]T

R = Y + 1.4022 Cr

B = Y + 1.7710 Cb

G = 1.7047 Y - 0.1952 B - 0.5647 R

Y = 0.2989 R + 0.5866 G + 0.1145 B

Cr = 0.7132 (R - Y)

Cb = 0.5647 (B - Y)

• Round and clip each quantity to eight bits

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