Despill tool based on the PIK Keyer.
1 = connect the image you want to despill.
Red weight : add or remove red.
Blue/Green weight : add or remove blue/green.
Gain : add gain to despilled pixels.
Gamma : add gamma to despilled pixels.
Saturation : saturate/desaturate despilled pixels.
mix with original : blend with original image.
NOTE : despill mask outputs in the alpha channel.