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Chromaticity Filter?, Chromaticity color channel access

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psoares

Posted: May 4 2003, 08:30 PM

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Using RGBAdjust(1, 0, 0, 1) I can get the red channel of a clip. However, I need to access the red chromaticity that can be defined as R/( R+G+B ) if R+G+B>0 and 0 otherwise. Can this be done with Avisynth?

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