this post was submitted on 20 Sep 2023
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I hate how AI upscaling looks and I really don't get why everyone seems to be gaga over it. In addition to the artifacts and other weirdness it can introduce, it just looks generally like someone smeared vaseline over the picture to me.
That's not inherent to "AI upscaling" as a process. ESRGAN for example is pretty good at upscaling pictures while keeping the quality.
I've tried upscaling with ESRGAN as well and it has similar problems. It messes with the original textures too much. For example, it made carpet look like a solid surface. Skin looks too smooth and shiny. That kind of thing.
It depends a lot on the source picture, but it's definitely not a general problem inherent to AI upscaling. Otherwise there wouldn't be so many positive examples of ESRGAN.