Can you make a workflow that Upscales images wihout quality loss and 're-imagined'  details and artifacts ? ... You have UNTIL April 8th to participate! Info on the #Challenges Discord Channel. Prize: $50 PayPal Credit! 

Upscaling Challenge 

Vinod Maskeri

This simple 4x upscaler enlarges the image while keeping the original detail of the image intact,

Classic SD Upscaler 

Michael Knight

This workflow is not meant to be fast, but aim for a VERY HIGH quality output. It outperform anything I know about upscale. Better than Topaz. Better than Magnific. But it have a down side, it is heavy on hardware when using the full workflow with large output size. 👉What it do:It upscale a poor image into something mind-blowing while conserving integrity of the picture. 👉How it work:The workflow look very big at first but is very simple to use. You can start by checking if you have all models in the workflow and can by tested directly. If you have problem, you can try to activate 1 group node at the time and see how it goes before going to next step.1- We crop the image at a SDXL most closest size. This is done with my custom nodes attached in files. Copy FRED_AutoCropImage_SDXL_Ratio.py inside your \ComfyUI\custom_nodes.2- We first upscale the image and clean it before it reach SUPIR. This is very important as SUPIR work best with a clean image, and simple upscale with model or upscale by node doesn't work well all the time. To do that, I use a CCSR upscale method. That upscale the image and keep it integrity and clean it. This mostly work good for noisy picture, with lots of artifacts, but is very hardware dependant and take sometime to load model for the first run.3- If the CCSR upscale didn't worked to clean the picture, we can use StableSR group. Usually not necessary.4- When the image is enough big (around 2x a SDXL standard), SUPIR will do it's magic. Adding skin texture and imperfections, adding detail to a landscape. It have its flaw, like adding hair where there isn't. To work around, we lower the CFGs but the common settings I finely found work very good.5- Don't worry if there was too much skin imperfections as they will be finetune in ultimateSDupscale. I do another 2x here and using realvisXL30Turbo with the upscaler 4xNMKD-Superscale0SP_178000_G it add skin detail at a micro level.6- Saving the picture in 2 different format, 1 with only a watermark at the bottom, and 1 with a compare of the original with automatic text placement. There is also a BEEP sound when the process end.👉Where it work the best:This workflow work so good for portrait image of humain on image around 512x512. So old SD1.5 image here we are for the upscale.It work great on other pictures too, some tweeking maybe required.👉More infos in workflow.This workflow contains around 250 nodes but you can all find them in comfyui_manager except for my custom node that is attached in a zip file. Put it in folder mentionned earlier. You need numpy, cv2, PIL and Torch to run, but most of you will all have that already. If not, then do a pip install numpy, and the other one.It also take a lot of ressouces but the result is worth it. For a normal upscale, it take around 8min/image upscaled on my RTX4090.🔥Help me improving this workflow. If you find a better way to parse data or a better model, please share.🔥Most install problem is not due to the workflow by itself but missing dependency or missing custom nodes or models. Be sur you're all set before posting a bug in the comments.PaintShop was used ONLY to convert image to jpg as the result is around 33mb. No modification was done within that tool.I hope you gonna have fun as much as I have to upscale pictures using this workflow.

Auto Crop -> CCSR -> SUPIR -> UltimateSDupscale -> High quality upscale

L10n.H34r7

📷​SUPIR v2 Photo Upscale📷​ -🔥SUPIR Photo Upscaler🔥- SUPIR ⚡ Copax TimeLessXL Version V11-lightning- Bonus : Upscale by model compare Nodes Info : - https://github.com/kijai/ComfyUI-SUPIR- https://github.com/kijai/ComfyUI-KJNodes- https://github.com/rgthree/rgthree-comfy- https://github.com/pythongosssss/ComfyUI-Custom-Scripts- https://github.com/Suzie1/ComfyUI_Comfyroll_CustomNodes- https://github.com/ssitu/ComfyUI_UltimateSDUpscale - Find my other worflow there : https://openart.ai/workflows/profile/l10n_h34r7 👉If you liked it please leave a review and a ❤️​👉Enjoy and Have Fun ! 😎

📷​SUPIR Photo Upscale📷​ (Contest entry)

Dominic Richer

a Fast 4X and 8X uspacler.. It just take the image, past it in 30 little upscale to get a 4X uspacle (Not exact 4X, like 4.32) And passing thru another 15 to get a 8X ish upscale (Exactly 8.98X) Little step to get to the final step :)

4x and 8x Photo upscale 

Aderek

I love make very easy, clear and fast WF. Enjoy! <img src="https://cdn.openart.ai/wangeditor_uploads/duzl5tMWa23D5zUP30PB/compressed/image_hDuy2-pH_1711561109662_512.webp" alt="" data-href="" style=""/> <img src="https://cdn.openart.ai/wangeditor_uploads/duzl5tMWa23D5zUP30PB/compressed/image_YiqgSLqh_1711561140431_512.webp" alt="" data-href="" style=""/> <img src="https://cdn.openart.ai/wangeditor_uploads/duzl5tMWa23D5zUP30PB/compressed/image_UOcOZdVZ_1711561170636_512.webp" alt="" data-href="" style=""/>

Ultra fast real photo upscaler x4

#NeuraLunk

More info will be added soon ;)NOT usable on human subjects !#NeuraLunk &nbsp;

Real Photo Upscaler 4x

akihungac

SUPIR upscaler is the highest quality, but it is very slow, requires high hardware/configuration and has a few exceptions that cause the image to be blurry than the original (like the gem image). So I added the 4x/16x quick upscaler option with high speed, which doesn't require much vram. I have carefully selected Upscale Models, download them at: https://openmodeldb.info/-4xLSDIRplusC.pth-16x-ESRGAN.pth-1x_Plants_400000_G.pth ---------------------------Discord: &nbsp;<a href="https://discordapp.com/users/339415040308412418" target="_blank">https://discordapp.com/users/339415040308412418</a> Any support is appreciated, thank you very much :)patreon.com/akihungacbuymeacoffee.com/akihungacpaypalme/manhtuanphoto

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Workflow Challenge- Upscaling Challenge
Can you make a workflow that Upscales images wihout quality loss and 're-imagined' details and artifacts ? ... You have UNTIL April 8th to participate! Info on the #Challenges Discord Channel. Prize: $50 PayPal Credit!
3/25/2024-4/8/2024

Classic SD Upscaler

Auto Crop -> CCSR -> SUPIR -> UltimateSDupscale -> High quality upscale

📷SUPIR Photo Upscale📷 (Contest entry)

4x and 8x Photo upscale

Ultra fast real photo upscaler x4

Real Photo Upscaler 4x

Hybrid Upscaler Workflow

OpenArt

Flow

|

Builder

Active Sessions

Classic SD Upscaler

Auto Crop -> CCSR -> SUPIR -> UltimateSDupscale -> High quality upscale

📷​SUPIR Photo Upscale📷​ (Contest entry)

4x and 8x Photo upscale

Ultra fast real photo upscaler x4

Real Photo Upscaler 4x

Hybrid Upscaler Workflow

📷SUPIR Photo Upscale📷 (Contest entry)