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High-Efficiency Lossy Image Coding Through Adaptive Neighborhood Information Aggregation

Pytorch Implementation of our paper "High-Efficiency Lossy Image Coding Through Adaptive Neighborhood Information Aggregation"[arXiv]. More details can be found at the homepage.

News

• [22.12.16] The MS-SSIM optimized pretrained models and evaluation results are uploaded for reference.
• [22.11.09] We fix a bug for the implement of the multistage context model and the performance is improved slightly, the models are retrained and you need to download the new ones.
• [22.10.27] The latest version of our TinyLIC is released with more efficient network architecture in both transform and entropy coding modules. More details can be found in the paper.

Installation

To get started locally and install the development version of our work, run the following commands (The docker environment is recommended):

git clone https://github.com/lumingzzz/TinyLIC.git
cd TinyLIC
pip install -U pip && pip install -e .

Usage

Train

We use the Flicker2W dataset for training, and the script for preprocessing.

Run the script for a simple training pipeline:

python examples/train.py -m tinylic -d /path/to/my/image/dataset/ --epochs 400 -lr 1e-4 --batch-size 8 --cuda --save

The training checkpoints will be generated in the "chekpoints" folder at the current directory. You can change the default folder by modifying the function "init()" in "expample/train.py".

Evaluation

Pre-trained models can be downloaded in NJU Box. The R-D results of three popular datasets can be found in /results for reference.

An example to evaluate model:

python -m compressai.utils.eval_model checkpoint path/to/eval/data/ -a tinylic -p path/to/pretrained/model --cuda

Citation

If you find this work useful for your research, please cite:

@article{lu2022high,
  title={High-Efficiency Lossy Image Coding Through Adaptive Neighborhood Information Aggregation},
  author={Lu, Ming and Ma, Zhan},
  journal={arXiv preprint arXiv:2204.11448},
  year={2022}
}

Acknowledgement

This framework is based on CompressAI, we add our modifications mainly in compressai.models.tinylic and compressai.layers for usage. You can refer to the paper for a comprehensive understanding.

The TinyLIC model is partially built upon the Neighborhood Attention Transformer and the open-sourced unofficial implementation of Checkerboard Context Model. We thank the authors for sharing their codes.

Contact

If you have any question, please contact me via minglu@nju.edu.cn.