What's the best way to upscale drawings/illustrations/paintings?

I'm pretty new at this but loving it. I've been messing around with illustrations, ink art, sketches and watercolours, which has stunning results. The default upscalers create a smooth texture, sort of 3d and a bit photo realistic, and it just looks weird.

And where do I find and install upscalers?

11 points · 12 comments · view on lemmy.world

12 Comments

chmod777@lemm.ee · 5 pts · 3y (2 replies)

https://www.reddit.com/r/StableDiffusion/comments/xkjjf9/upscale_to_huge_sizes_and_add_detail_with_sd/

Not sure whether I should post a reddit link but this guide is excellent.

guriinii@lemmy.world · 3 pts · 3y

Blasphemy!

Thanks, looks useful.

SourSweetChaos@lemmy.world · 2 pts · 3y

This guide is ok but SD Upscaler is outdated.

SourSweetChaos@lemmy.world · 3 pts · 3y (5 replies)

Better than ultimate SD upscaler: https://github.com/pkuliyi2015/multidiffusion-upscaler-for-automatic1111

Combined with controllnet tile upscale it provides amazing results.

guriinii@lemmy.world · 3 pts · 3y (4 replies)

So I did install this but couldn't find "Tiled VAE" or "Tiled Diffusion" anywhere in the UI.

Is controlnet something I have install separately?

SourSweetChaos@lemmy.world · 4 pts · 3y (3 replies)

Yes you have to install ControlNet separately.

But you should already see the Tiled VAE and Tiled Diffiusion plugin.

Watch this video to see how it should look. Also a guide for this method: https://youtu.be/KkxNEiiBOyQ

guriinii@lemmy.world · 3 pts · 3y (2 replies)

Oh I do have them. Was looking on Extras with the upscaling settings.

SourSweetChaos@lemmy.world · 3 pts · 3y (1 reply)

Watch the video for settings. It is quite complex. If you want to add detail or change the image more try ControlNet+Ultimate SD Upscaler script. It is also easier with the settings: https://stable-diffusion-art.com/controlnet-upscale/#Method_3_ControlNet_tile_upscale

guriinii@lemmy.world · 3 pts · 3y

Okay, thanks for the help

Anonymousbaba@lemmynsfw.com · 2 pts · 3y (1 reply)
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guriinii@lemmy.world · 2 pts · 3y

Yeah

dangerno8@lemmy.world · 2 pts · 3y

After refining to 2048px with img2img I usually send it to extras and upscale to 4096px with 4x-UltraSharp but for the most natural looking result I will just scale the 2048px image up in photoshop and then overlay the UltraSharp output somewhere between 40-70% opacity. But then it also depends on the style of the image, for some images that I really want to look their best I'll do both UltraSharp and R-ESRGAN-x4+_anime_6B and then mask out the areas I find to look best between the two in order to get the fewest artifacts. Maximum sharpness isn't always the best, some mild blur and even film grain/noise can do a lot to make an image look really natural and beautiful.