Increases or decreases the saturation of an image. Saturation is calculated relative
to a standard luminance measure using the RGB coefficients
0.2126, 0.7152, 0.0722.
Container for user-defined plugs. Nodes should never make their own plugs here, so users are free to do as they wish.
The output image generated by this node.
Turns the node on and off.
The input image
The names of the channels to process. Names should be separated by spaces and can use Gaffer’s standard wildcards.
Unpremultiplies data before processing, and premultiply again after processing. This allows accurate processing of nodes that deal with color, when running on partially transparent or deep images.
Values less than 1 bring colors closer to monochrome, values greater than 1 push colors away from monochrome.