【ACMMM 2021】DSANet: Dynamic Segment Aggregation Network for Video-Level Representation Learning

Overview

DSANet: Dynamic Segment Aggregation Network for Video-Level Representation Learning (ACMMM 2021)

1

Overview

We release the code of the DSANet (Dynamic Segment Aggregation Network). We introduce the DSA module to capture relationship among snippets for video-level representation learning. Equipped with DSA modules, the top-1 accuracy of I3D ResNet-50 is improved to 78.2% on Kinetics-400.

The core code to implement the Dynamic Segment Aggregation Module is codes/models/modules_maker/DSA.py.

[July 7, 2021] We release the core code of DSANet.

[July 3, 2021] DSANet has been accepted by ACMMM 2021.

Prerequisites

All dependencies can be installed using pip:

python -m pip install -r requirements.txt

Our experiments run on Python 3.7 and PyTorch 1.5. Other versions should work but are not tested.

Download Pretrained Models

  • Download ImageNet pre-trained models for offline environment
cd pretrained
sh download_imgnet.sh
  • Download K400 pre-trained models for inference

TODO

Data Preparation

We follow the same data process with MVFNet for data preparation.

Model Zoo

TODO

Testing

bash dist_test_recognizer.sh CONFIG_PATH CHECKPOINT_PATH 8 

Training

This implementation supports multi-gpu, DistributedDataParallel training, which is faster and simpler.

  • For example, to train DSANet with 8 gpus, you can run:
bash dist_train_recognizer.sh configs/kinetics/r50_e100.py 8

Acknowledgements

We especially thank the contributors of the MVFNet and mmaction codebase for providing helpful code.

License

This repository is released under the Apache-2.0. license as found in the LICENSE file.

Related Work

MVFNet: Multi-View Fusion Network for Efficient Video Recognition, AAAI2021 Paper | Code

Citation

If you think our work is useful, please feel free to cite our paper 😆 :

@inproceedings{wu2021dsanet,
  title={DSANet: Dynamic Segment Aggregation Network for Video-Level Representation Learning},
  author={Wu, Wenhao and Zhao, Yuxiang and Xu, Yanwu and Tan, Xiao and He, Dongliang and Zou, Zhikang and Ye, Jin and Li, Yingying and Yao, Mingde and Dong, Zichao and others},
  booktitle = {ACMMM},
  year={2021}
}

Contact

For any question, please file an issue or contact

Wenhao Wu: [email protected]
Yuxiang Zhao: [email protected]
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