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DigitalVideoAndHDTVAlgorithmsAndInterfaces.pdf

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Luminance, L (relative)<br />

1.0<br />

0.8<br />

0.6<br />

0.4<br />

0.2<br />

0<br />

0<br />

50 100 150 200 250<br />

Code value, V’ (8-bit scale)<br />

You can construct a gamma-correction lookup table to<br />

apply Rec. 709 to 8-bit tristimulus data, using this<br />

C code:<br />

#define CLIP(b,t,v) ((v) = (t) ? (t) : v)<br />

#define REC_709(L) ((L)

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