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Color Functions
Color Functions will apply basic color math operations to an image like Gain(multiply) , Gamma (power), Saturate (color +/- luminance), these can apply to RGBA extcepth Saturate.
--**********Color Functions************
out = img:Copy() -- copy input image to out image out:Gain(1.1 , 1.2 , 1.3, 1)--RGBA
out:Gamma(1.5, 1.5, 1.5, 1)--RGBA
out:Saturate(1.5,1.5,1.5)--RGB