README.md

Pixel-Aware Stable Diffusion for Realistic Image Super-Resolution and Personalized Stylization

Paper

Tao Yang¹, Peiran Ren¹, Xuansong Xie¹, Lei Zhang^2
1DAMO Academy, Alibaba Group, Hangzhou, China
²Department of Computing, The Hong Kong Polytechnic University, Hong Kong, China

Our model can do various tasks. Hope you can enjoy it.

Realistic Image SR

Old photo restoration

Personalized Stylization

Colorization

News

(2024-1-16) Support LCM-LORA now. PASD can upscale a image with 2-4 steps. Try python test_pasd.py --num_inference_steps 3 --use_lcm_lora. You should download LCM-LORA model from lcm-lora-sdv1-5 and put it in the checkpoints folder.

(2024-1-16) You may also want to check our new updates SeeSR and Phantom.

(2023-10-20) Add additional noise level via --added_noise_level and the SR result achieves a great balance between "extremely-detailed" and "over-smoothed". Very interesting!. You can control the SR's detail level freely.

(2023-10-18) Completely solved the issues by initializing latents with input LR images. Interestingly, the SR results also become much more stable.

(2023-10-11) Colab demo is now available. Credits to Masahide Okada.

(2023-10-09) Add training dataset.

(2023-09-28) Add tiled latent to allow upscaling ultra high-resolution images. Please carefully set latent_tiled_size as well as --decoder_tiled_size when upscaling large images.

(2023-09-12) Add Gradio demo.

(2023-09-11) Upload pre-trained models.

(2023-09-07) Upload source codes.

Usage

• Clone this repository:

git clone https://github.com/yangxy/PASD.git
cd PASD

• Download SD1.5 models from huggingface and put them into checkpoints/stable-diffusion-v1-5.

• Prepare training datasets. Please check dataloader/localdataset.py and dataloader/webdataset.py carefully and set the paths correctly. We highly recommend to use dataloader/webdataset.py.

• Download our training dataset. DIV2K_train_HR | DIV8K-0 | DIV8K-1 | DIV8K-2 | DIV8K-3 | DIV8K-4 | DIV8K-5 | FFHQ_5K | Flickr2K_HR-0 | Flickr2K_HR-1 | Flickr2K_HR-2 | OST_animal | OST_building | OST_grass | OST_mountain | OST_plant | OST_sky | OST_water | Unsplash2K

• Train a PASD.

bash ./train_pasd.sh

if you want to train pasd_light, use --use_pasd_light.

• Test PASD.

Download our pre-trained models pasd | pasd_rrdb | pasd_light | pasd_light_rrdb, and put them into runs/.

python test_pasd.py # --use_pasd_light --use_personalized_model

Please read the arguments in test_pasd.py carefully. We adopt the tiled vae method proposed by multidiffusion-upscaler-for-automatic1111 to save GPU memory.

Please try --use_personalized_model for personalized stylizetion, old photo restoration and real-world SR. Set --conditioning_scale for different stylized strength.

We use personalized models including majicMIX realistic(for SR and restoration), ToonYou(for stylization) and modern disney style(unet only, for stylization). You can download more from communities and put them into checkpoints/personalized_models.

If the default setting does not yield good results, try different --pasd_model_path, --seed, --prompt, --upscale, or --high_level_info to get better performance.

• Gradio Demo

python gradio_pasd.py

Citation

If our work is useful for your research, please consider citing:

@inproceedings{yang2023pasd,
    title={Pixel-Aware Stable Diffusion for Realistic Image Super-Resolution and Personalized Stylization},
    author={Tao Yang, Peiran Ren, Xuansong Xie, and Lei Zhang},
    booktitle={Arxiv},
    year={2023}
}

License

© Alibaba, 2023. For academic and non-commercial use only.

Acknowledgments

Our project is based on diffusers.

Contact

If you have any questions or suggestions about this paper, feel free to reach me at [email protected].