The Channel Picker node can be used to isolate either the red, blue, or green channel from an incoming texture map (figure 2).

Figure 1: Channel picker Node


Figure 2: The Channel Picker node is used to isolate only the incoming red channel data for the plane on the right, resulting in greyscale output.

Parameters

    • Input - Specifies the image for the operation.
    • Conversion - Color space conversion applied to the input texture. 
    • Channel - The color channel to pass through to the output texture.