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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. It takes one image input and exposes four single-channel outputs (Red, Green, Blue, and Alpha), each a single-channel view of the source. Wire each output into a different downstream node to operate on each channel independently, then recombine the results with Channel Merge if you need a single image back.

A 1-channel input is also accepted: it’s auto-promoted to RGBA with R=G=B=channel and A=255, so the same node works whether you feed it color images or a single-channel image.

Parameters

Section titled “Parameters”

Pins

ImageImage
InputRequired
RMask
Output
GMask
Output
BMask
Output
AMask
Output

Usage Tips

Section titled “Usage Tips”
  • Pair with Channel Merge to apply different effects per channel. For example, blur the alpha while leaving the color channels sharp.
  • Use the Alpha output as a clean cutout source for downstream Mask Refine or Mask Apply.
  • Wire a single channel output through Levels or Curves, then recombine with Channel Merge to grade one channel without affecting the others.
Section titled “Related Nodes”