FLUX.1 SmartUpscaler-[2Pass Upscaler]. ControlNet + SD UPscale

FLUX.1 SmartUpscaler-[2Pass Upscaler]. ControlNet + SD UPscale is for restoring, upscaling, and color-fixing low-resolution realistic images and portraits. It takes a loaded image, can optionally use a prompt, and can produce images at 4 megapixels or more.

By default, a loaded image—including one that is 256x256—is resized to 1 megapixel, then upscaled by the value set in Ultimate SD Upscale.

You can leave the prompt empty; the description says a prompt may help with unstable results, as can denoise values.

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Set Image Upscale_by = 1 if you want the upscaler to act as an image refiner.

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It is published by Nxssar and uses Flux.1 D as its base model.

An AI-app option is linked at https://www.seaart.ai/workFlowAppDetail/cti9f9le878c73dh27ig.

The workflow names these model files: 4x_NMKD-Siax_200k.pth, clip_l.safetensors, Flux.1-dev-Controlnet-Upscaler.safetensors, and flux1-dev-Q6_K.gguf.

It also names t5xxl_fp8_e4m3fn.safetensors and thwri/CogFlorence-2.2-Large.

Named nodes include Anything Everywhere3; CLIPTextEncodeFlux; ColorMatch; ConditioningZeroOut; ControlNetApplyAdvanced; ControlNetLoader; CR Image Input Switch; CR Prompt Text; CR Text Input Switch; DownloadAndLoadFlorence2Model; DualCLIPLoaderGGUF; easy imageSize; Fast Groups Bっ

Change the 1-megapixel target in the “Image Input Resizer” nodes when you want a different base resolution.

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For celebrity images or characters, consider a designated Lora to help preserve accurate facial features.

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Before use, verify that your setup includes the named model files and nodes.

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No license is specified for this workflow.