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AdaSGN

AdaSGN: Adapting Joint Number and Model Size for Efficient Skeleton-Based Action Recognition

Note

pytorch>=1.6

Data Preparation

Under the "code" forder:

• NTU-60
  • Download the NTU-60 data from the https://github.com/shahroudy/NTURGB-D to ../data/raw/ntu60
  • cd prepare/ntu60/
  • Process the raw data sequentially with python get_raw_skes_data.py, python get_raw_denoised_data.py and python seq_transformation.py
• NTU-120
  • Download the NTU-120 data from the https://github.com/shahroudy/NTURGB-D to ../data/raw/ntu120
  • cd prepare/ntu120/
  • Process the raw data sequentially with python get_raw_skes_data.py, python get_raw_denoised_data.py and python seq_transformation.py
• SHREC
  • Download the SHREC data from http://www-rech.telecom-lille.fr/shrec2017-hand/ to ../data/raw/shrec_hand
  • cd prepare/shrec/
  • Generate the train/test splits with python gendata.py

Training & Testing

Using NTU-60-CV as an example:

• First, pre-train the single-models by: python train.py --config ./config/ntu60/ntu60_singlesgn.yaml Modify the "gcn_type" and the "num_joint" of the config file to obtain different single-models.

• Second, modify the single model paths ("pre_trains" option) in the config file and train the AdaSGN by:

  python train.py --config ./config/ntu60/ntu60_ada_pre.yaml

• Repeat the above two steps to train the bone modality and the velocity modality. In detail, set "decouple_spatial" to True for the bone modality and set "num_skip_frame" to 1 for the velocity modality. Then combine the generated scores with:

  python ensemble.py --label label_path --joint joint_score_path --bone bone_score_path --vel velocity_score_path

Citation

Please cite the following paper if you use this repository in your research.

@inproceedings{adasgn2021iccv,  
      title     = {AdaSGN: Adapting Joint Number and Model Size for Efficient Skeleton-Based Action Recognition},  
      author    = {Lei Shi and Yifan Zhang and Jian Cheng and Hanqing Lu},  
      booktitle = {ICCV},  
      year      = {2021},  
}

Contact

For any questions, feel free to contact: lei.shi@nlpr.ia.ac.cn