SeemoRe - ICML 2024

See More Details: Efficient Image Super-Resolution by Experts Mining

Eduard Zamfir¹, Zongwei Wu^1*, Nancy Mehta¹, Yulun Zhang^2,3* and Radu Timofte¹

¹ University of Würzburg, Germany - ² Shanghai Jiao Tong University, China - ³ ETH Zürich, Switzerland

^* Corresponding authors

Latest

• 05/29/2024: Added 🤗Demo.
• 05/23/2024: Code & ckpt & results release. Google Drive
• 05/02/2024: SeemoRe has been accepted at ICML 2024! 🎉
• 02/05/2024: Technical report released on arxiv.

Method:

Abstract

Reconstructing high-resolution (HR) images from low-resolution (LR) inputs poses a significant challenge in image super-resolution (SR). While recent approaches have demonstrated the efficacy of intricate operations customized for various objectives, the straightforward stacking of these disparate operations can result in a substantial computational burden, hampering their practical utility. In response, we introduce **S**eemo**R**e, an efficient SR model employing expert mining. Our approach strategically incorporates experts at different levels, adopting a collaborative methodology. At the macro scale, our experts address rank-wise and spatial-wise informative features, providing a holistic understanding. Subsequently, the model delves into the subtleties of rank choice by leveraging a mixture of low-rank experts. By tapping into experts specialized in distinct key factors crucial for accurate SR, our model excels in uncovering intricate intra-feature details. This collaborative approach is reminiscent of the concept of **see more**, allowing our model to achieve an optimal performance with minimal computational costs in efficient settings.

Mixture of Low Rank Experts:

Results:

Main Results

Visual Comparison

HR	Bicubic	SwinIR-Light	DAT-Light	SeemoRe (ours)

Install

Create a conda enviroment:

ENV_NAME="seemore"
conda create -n $ENV_NAME python=3.10
conda activate $ENV_NAME

Run following script to install the dependencies:

bash install.sh

Usage

Pre-trained checkpoints and visual results can be downloaded here. Place the checkpoints in checkpoints/.

In options you can find the corresponding config files for reproducing our experiments.

Testing

For testing the pre-trained checkpoints please use following commands. Replace [TEST OPT YML] with the path to the corresponding option file.

python basicsr/test.py -opt [TEST OPT YML]

Training

For single-GPU training use the following commands. Replace [TRAIN OPT YML] with the path to the corresponding option file.

torchrun --nproc_per_node=1 --master_port=4321 basicsr/train.py -opt [TRAIN OPT YML] --launcher pytorch

Citation

If you find our work helpful, please consider citing the following paper and/or ⭐ the repo.

@inproceedings{zamfir2024details,
  title={See More Details: Efficient Image Super-Resolution by Experts Mining}, 
  author={Eduard Zamfir and Zongwei Wu and Nancy Mehta and Yulun Zhang and Radu Timofte},
  booktitle={International Conference on Machine Learning},
  year={2024},
  organization={PMLR}
}

Acknowledgements

This code is built on BasicSR.