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Installation

Navigate to the ComfyUI /custom_nodes directory

git clone https://github.com/yuvraj108c/ComfyUI_InvSR
cd ComfyUI_InvSR

pip install -r requirements.txt

Usage

Load example workflow

Diffusers model (stabilityai/sd-turbo) will download automatically to ComfyUI/models/diffusers

InvSR model (noise_predictor_sd_turbo_v5.pth) will download automatically to ComfyUI/models/invsr

To deal with large images, e.g, 1k—->4k, set chopping_size 256

If your GPU memory is limited, please set chopping_batch_size to 1

Parameters

num_steps: number of inference steps

cfg: classifier-free guidance scale

batch_size: Controls how many complete images are processed simultaneously

chopping_batch_size: Controls how many patches from the same image are processed simultaneously

chopping_size: Controls the size of patches when splitting large images

color_fix: Method to fix color shift in processed images

Updates

28 April 2025

Update diffusers versions in requirements.txt to fix https://github.com/yuvraj108c/ComfyUI_InvSR/issues/26, https://github.com/yuvraj108c/ComfyUI_InvSR/issues/21, https://github.com/yuvraj108c/ComfyUI_InvSR/issues/15

Add support for noise_predictor_sd_turbo_v5_diftune.pth

03 February 2025

Add cfg parameter

Make image divisible by 16

Use mm to set torch device

31 January 2025

Merged https://github.com/yuvraj108c/ComfyUI_InvSR/pull/5 by wfjsw

Compatibility with diffusers>=0.28

Massive code refactoring & cleanup

Citation

@article{yue2024InvSR,
  title={Arbitrary-steps Image Super-resolution via Diffusion Inversion},
  author={Yue, Zongsheng and Kang, Liao and Loy, Chen Change},
  journal = {arXiv preprint arXiv:2412.09013},
  year={2024},
}

License

This project is licensed under NTU S-Lab License 1.0

Acknowledgments

Thanks to simplepod.ai for providing GPU servers

Star History

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