Color Key
The Color Key node is used to key out a specified color in a connected texture map (figure 1).
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Color Key
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Figure 1: The Color Key node used to key out the red color on a connected texture map
Color Key Parameters
Input Image - Image to be keyed.
Key Color - The color to be keyed.
Mask - Garbage matte should be connected here.
Fill Color - The color to replace the keyed area.
Low/High Cutoff - The low and high cutoff for the color difference.
Computation Gamma - Adjusts the color range midtones before computing the difference.
Projection - Specifies the projection type to be used for this texture.
U Cutoff Low/High - Specifies the low and high edge of simple 2D cutoff in the U direction.
V Cutoff Low/High - Specifies the low and high edge of simple 2D cutoff in the V direction.