invoke-ai / invoke-ai/InvokeAI
[enhancement]: Color correction in Upscale tab
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- Python
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Description
### Is there an existing issue for this?
- [X] I have searched the existing issues
### Contact Details
Svyaga
### What should this feature add?
It would be great to have color correction in Upscale tab. Depending on settings and model used, upscaling (especially at high denoise) can change colors a lot. Forge/reForge has color correction option, Invoke's "Workflows" also has a color correction node:

Here's an example:
Initial image

Upscaled image (using Upscale tab)

This is an example of using upscale with color correction in Workflows tab:

I made a very primitive color correction in Workflow tab to use as a reference:
[color correction example.json](https://github.com/user-attachments/files/17512556/color.correction.example.json)
It just applies color correction at a low percent (so the image doesn't just revert to the original), but it loses some quality.
Better masking properties could lead to even better result.
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