Image Manual Diff

What is it for?

• Importing an image retouched in an external tool as a patch
• Keeping only the difference between an original and edited image in the graph
• Bringing an existing image into a patch workflow

Overview

Compares an original image with an edited one and automatically extracts a patch containing only the changed pixels. It is the entry point for importing manual retouches made in an external tool such as Aseprite into the graph as a patch.

Usage tips

• The external-edit workflow is: export an image and retouch it externally → two image_load nodes (original and edited) → image_manual_diff → patch_apply. The correction remains applied even when upstream changes later.
• Merge the extracted patch with a hand-drawn patch from pixel_patch by using patch_merge.

Related nodes

• image_load — loads the original and edited images
• patch_apply / patch_toggle / patch_merge — uses the patch
• pixel_patch — draws corrections inside the graph

Notes

• original and edited must have the same dimensions. A mismatch produces a node error.
• The output patch records only the pixels that changed.
• The image output is the compared edited image itself, so it can also be previewed directly.

Examples

1. Image Load(original) + Image Load(edited) -> Image Manual Diff
   • Converts an externally edited result into a patch.
2. Image Manual Diff.patch -> PatchToggle -> PatchApply
   • Toggles only the correction for comparison.