Can anyone help to find out this website upscaling method?

[seawithfire]

hi. this site (https://kiri.art/upsample) has an amazing tool for upscale face. the result is very clean and very similar to original face. i test CodeFormer and GFPGAN in SD (extra tab) but the face is not that similar as the kiri results are. its a open source service but i dont know anything about this things. is it possible to findout what method they using from the source?

1. if yes, can you please check it for me? i want to get result in my SD the same the result this site can do
   https://github.com/kiri-art/stable-diffusion-react-nextjs-mui-pwa

2. if no or if (yes but its hard and no one do that) can you atleast tell me the best way to upscale photo with faces with Maximum possible similarity to original face?

[CCpt5]

A novel less talked about upscaling method that does a pretty good job holding facial characteristics is: https://github.com/pkuliyi2015/sd-webui-stablesr

Not my specialty but been using that a bit the past few days so figured I'd give it a mention. You'll need the v2.1 checkpoint as mentioned on their webpage.

[CCpt5]

Or could try https://github.com/Tohrusky/Final2x

Which incorporates models like RealCUGAN, RealESRGAN, Waifu2x, and SRMD.

[Woisek]

It says it uses RealESREGAN_4xplus ... just download and use it. You have to adjust your parameters depending on the image anyway.

[seawithfire]

yes but it use RealESREGAN_4xplus for just do upscale. in this case face are blury. it has another extra option "face enhance" that when is on, the face will be great. i want this face restore thing. in SD we have just CodeFormer and GFPGAN and both of them is not that great. is there any other option than CodeFormer and GFPGAN? or this site is Certainly use one of these two or both witj special settings?

[Woisek]

If there would be any additional face restore option available, I think it would be implemented. Maybe they use their own method, then there is no chance to get this for the public, and you have to use what's available. 🤷‍♂️