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These image upscalers always seem to remove noise in ways that make the result look terrible. You should be adding reasonable texture, not smearing surfaces in
by BugsJustFindMe 3y ago
These image upscalers always seem to remove noise in ways that make the result look terrible. You should be adding reasonable texture, not smearing surfaces in vaseline.
- johndough 3y agoThis is especially obvious for the Machu Picchu image where the cobble stone walls are turned into different walls. Original: https://imageupscalerai.com/static/images/test-machupicchu.jpeg https://imageupscalerai.com/static/images/test-machupicchu.j... Upscaled: https://imageupscalerai.com/static/images/result-machupicchu.jpeg https://imageupscalerai.com/static/images/result-machupicchu...
- dylan604 3y agoYeah, that upscale result is horrendous. It would never be acceptable in professional situations. It looks like something rendered in a 3D system with a cell shader plugin
- mym1990 3y agoDoes the result get better if you upscale multiple times, in smaller intervals, so that the single jump extrapolation of detail is not as large going from the original to 8x?
- knome 3y agoI would wonder if increasing the size of the image keeping the pixelation and then using a pixelation removal network might do better than this. Those, at least, are already trained to add detail where it isn't.
- shepardrtc 3y agoThey're using established open source models and code, just under their own web UI. Specifically Real-ESRGAN for the upscaling, and Codeformer for the face enhancements, which is what most people are doing. Though my company is using GFPGAN for the facial enhancements at the moment. "AI Image Enhancement" websites are all using the same stuff.
- deleted 3y ago[deleted]
- raxxorraxor 3y agoYou are just jealous of the Machu Picchu super lawn. But seriously, I think this is much harder to do and probably a second step after the edges are defined.
- Zetobal 3y agoIf you want to provide good upscaling results you need to use a latent scaler but these are compute intensive so the easier way is to just blow it through a gan like here.
- keymasta 3y agoWhat are some examples of latent scaler upsamplers?
- Zetobal 3y agoThere are a lot but the one implemented as LDSR in most stable guis is this one. https://github.com/CompVis/latent-diffusion https://github.com/CompVis/latent-diffusion upscale wiki is really the place to explore everything image scaling: https://upscale.wiki/ https://upscale.wiki/
- axegon_ 3y agoNot always. One notable example which left me really impressed was letsenhance.io (admittedly I almost started working for them at one point but ultimately took a different route).
- aantix 3y agoThe same for video. Even the "state of the art", Topaz AI's video upscaler, makes everyone look like a porcelain doll.
- kobalsky 3y agothere’s something like the uncanny valley for upscaled images some of them make me uncomfortable for some weird reason