Loop Forge

One person in a crowd

From Qwen-Image 2.1, run locally

Frame from the The marked input result
The marked inputDownload JPG1.3 MB
Frame from the What came back result
What came backDownload JPG1.2 MB
Output
2752×1536
Change spread
Edge to edge
Steps
40, euler / simple, cfg 1.0
Seed
21
Ran on
RTX 3060, 12GB (local)

The prompt

Change the woman in the red circle to full natural colour, and keep every other person in the photograph black and white. Do not render the circle in the output.

Notes

Several people picked up colour, not just the marked one. Differencing source against result puts the change across the full width of the frame.