Channel Split
Color
Splits an RGBA image into four single-channel images (R, G, B, A) for independent downstream processing.
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”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 any output into Levels or Curves via Channel Merge to grade a single channel without touching the others.