MuLUT: Cooperating Mulitple Look-Up Tables for Efficient Image Super-Resolution

Jiacheng Li*, Chang Chen*, Zhen Cheng, and Zhiwei Xiong#

(*Equal contribution, #Corresponding author)

Paper | Supp. | Poster | Project Page | Intro Video

News

2023.03 Extended version of MuLUT is available on arxiv.

2023.02 Our new work, Learning Resampling Function(LeRF), is accepted by CVPR 2023. LeRF makes up for the regrets of MuLUT on replacing interpolation methods via achiving continuous resampling.

2022.10 MuLUT is open sourced.

At A Glance

Please learn more at our project page.

Usage

Code overview

In the sr directory, we provide the code of training MuLUT networks, transferring MuLUT network into LUts, finetuning LUTs, and testing LUTs, taking the task of single image super-resolution as an example.

In the common/network.py file, we provide a universal implementation of MuLUT blocks, which can be constructed into MuLUT networks in a lego-like way.

Dataset

Please following the instructions of training and testing.

Step 0: Installation

Clone this repo.

git clone https://github.com/ddlee-cn/MuLUT

Install requirements: torch>=1.5.0, opencv-python, scipy

Step 1: Training MuLUT network

First, let us train a MuLUT network.

cd sr
python 1_train_model.py --stages 2 --modes sdy -e ../models/sr_x2sdy \
                        --trainDir ../data/DIV2K --valDir ../data/SRBenchmark

Our trained model and log are available under the models/sr_x2sdy directory.

Step 2: Transfer MuLUT blocks into LUTs

Now, we are ready to cache the MuLUT network into multiple LUTs.

python 2_transfer_to_lut.py --stages 2 --modes sdy -e ../models/sr/x2sdy

Step 3: Fine-tuning LUTs

python 3_finetune_lut.py --stages 2 --modes sdy -e ../models/sr_x2sdy \
                        --trainDir ../data/DIV2K --valDir ../data/SRBenchmark

After fine-tuning, LUTs are saved into .npy files and can be deployed on other devices. Our fine-tuned LUTs and log are available under the models/sr_x2sdy directory.

Step 4: Test LUTs

Finally, we provide the following script to execute the LUT retrieval.

python 4_test_lut.py --stages 2 --modes sdy -e ../models/sr_x2sdy

The reference results for the Set5 dataset are provided under the results/sr_x2sdy directory.

Contact

If you have any questions, feel free to contact me by e-mail jclee [at] mail.ustc.edu.cn.

Citation

If you find our work helpful, please cite the following papers.

@InProceedings{Li_2022_MuLUT,
      author    = {Li, Jiacheng and Chen, Chang and Cheng, Zhen and Xiong, Zhiwei},
      title     = {{MuLUT}: Cooperating Multiple Look-Up Tables for Efficient Image Super-Resolution},
      booktitle = {ECCV},
      year      = {2022},
  }
  
  
@arxiv{Li_2023_DNN_LUT,
      author    = {Li, Jiacheng and Chen, Chang and Cheng, Zhen and Xiong, Zhiwei},
      title     = {Toward {DNN} of {LUTs}: Learning Efficient Image Restoration with Multiple Look-Up Tables},
      booktitle = {arxiv},
      year      = {2023},
  }
  

@InProceedings{Li_2023_LeRF,
      author    = {Li, Jiacheng and Chen, Chang and Huang, Wei and Lang, Zhiqiang and Song, Fenglong and Yan, Youliang and Xiong, Zhiwei},
      title     = {Learning Steerable Function for Efficient Image Resampling},
      booktitle = {CVPR},
      year      = {2023},
  }

License

MIT

Acknowledgement

Our code is build upon SR-LUT.