LookupHLS Function
This node performs exactly like Lookup, except it works on the HSL channels instead of RGB channels.
image LookupHLS( image, float expression hExpr, float expression lExpr, float expression sExpr, float expression aExpr );
image = Lookup( image, hExpr, lExpr, sExpr, aExpr);
shake -lookup "hExpr" "lExpr" "sExpr" "aExpr" |