Add face restore / colorize

[rexorp]

I found these options to be very useful for my creative applications when restoring old photos.

• The ability to do Image to Image.
• An option for upscaling x2, x4, auto or not.
• A face restore option.
• An option to colorize photos would be handy too.

[powderluv]

Image to image is done.

[powderluv]

Upscaling is also in. (modulo some bugs we can open new issues for). Will rename this to face restore

[cstueckrath]

while it is nice to have the upscaler as separate tab, it should eventually be merged into something like post-processing and hold all the options for that. Also, regarding face restoration: this needs to have a checkbox in at least txt2img so it can be run automatically after each generation.

[powderluv]

ah good point on the checkbox. What are the latest models for Face restoration ?

[cstueckrath]

GFPGAN 1.3/1.4 and CodeFormer is still SOTA afaik. I'm not that into that topic, though. But I know those work well.

[powderluv]

codeformer

[cstueckrath]

gfpgan

[cstueckrath]

IMO they work best when used together. I usually use only gfpgan, but give it another pass in codeformer when the output is too model like

[cstueckrath]

found another interesting one: DifFace

[RousseauRemi]

When do the face restoration will be availlable ?