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Channel Split

Channel Split
Color

Splits an RGBA image into four single-channel images (R, G, B, A) for independent downstream processing.

The Channel Split node separates an image into its red, green, and blue channels.
The original image followed by its red, green, and blue channels shown as grayscale.

Channel Split has no parameters. Wire each output into a different node to process the channels independently, then recombine them with Channel Merge if you need one image back.

Splitting a packed ORM map keeps its values: in a 32-bit document each lane reaches a Texture node’s Roughness or Metallic at the value stored in the file, even with the file on Auto and a Levels or Blur on the way. See Data maps: Auto or Data.

A single-channel input is accepted too: it is promoted to RGBA with R, G, and B equal to the channel and alpha fully opaque.

Parameters

Section titled “Parameters”

Pins

ImageImage
InputRequired
RMask
Output
GMask
Output
BMask
Output
AMask
Output

Usage Tips

Section titled “Usage Tips”
  • Blur the alpha while leaving the color channels sharp, or grade one channel alone through Levels or Curves, then recombine with Channel Merge.
  • Use the A output as a clean cutout source for Mask Refine or Mask Apply.
Section titled “Related Nodes”