Comfyui custom node that modifies image channels with various per-channel operations across RGB, HSV, and Oklab color-space with live in-node preview
Note: Destination parameter has no effect on any operations other than Overwrite
| Operation | Effect |
|---|---|
| Invert | Inverts selected channel(s). |
| Overwrite | Overwrites destination channel with source channel. |
| Set | Sets selected channel(s) to Amount. |
| Add | Adds Amount. |
| Subtract | Subtracts Amount. |
| Multiply | Multiplies by factor. |
| Divide | Divides by factor. |
| Clamp Min | Clamps selected channel(s) to be ≥ Amount. |
| Clamp Max | Clamps selected channel(s) to be ≤ Amount. |
| Truncate | Quantizes using a step derived from Amount. |
| Contrast | Adjusts contrast around mid-gray based on Amount. |
| Source | Channels |
|---|---|
| RGB | R, G, B |
| R | Red |
| G | Green |
| B | Blue |
| HSV | H, S, V |
| H | Hue |
| S | Saturation |
| V | Value |
| Oklab | L, a, b |
after node execution, the node saves a preview PNG and pushes a refresh for instant display.
if you find mismatch between preview and output image, make issue on repo.
MIT