Available Model List

- Refer to each Branch of this repository

- 2s-AGCN

@article{2s-AGCN,
  title={Two-Stream Adaptive Graph Convolutional Networks for Skeleton-Based Action Recognition},
  author={Lei Shi, Yifan Zhang, Jian Cheng, Hanqing Lu},
  journal = {IEEE Conference on Computer Vision and Pattern Recognition, 2019},
  year={2019}
}

- PoseC3D

@article{PoseC3D,
  title={Revisiting Skeleton-based Action Recognition},
  author={Haodong Duan, Yue Zhao, Kai Chen, Dahua Lin, Bo Dai},
  journal = {IEEE Conference on Computer Vision and Pattern Recognition, 2022},
  year={2022}
}

- CTR-GCN

@article{CRT-GCN,
  title={Channel-wise Topology Refinement Graph Convolution for Skeleton-Based Action Recognition},
  author={Yuxin Chen, Ziqi Zhang, Chunfeng Yuan, Bing Li, Ying Deng, Weiming Hu},
  journal = {International Conference on Computer Vision, 2021},
  year={2021}
}

Skeleton-Based Action Recognition Methods

- Skeleton-based action recognition

• A computer vision task that involves recognizing human actions from a sequence of 3D skeletal joint data
• The goal of skeleton-based action recognition is to develop algorithms that can understand and classify human actions from skeleton data
• The gcn-based method (extracting visual features) and the cnn-based method (extracting graph features) are mainly used.

- Goals of this repository

• Various skeleton-based action recognition methods implementation/test/customization etc.

Datasets

- NTU RGB+D

• Download link: https://github.com/shahroudy/NTURGB-D

• Data volume and classes

  • 56,000 action clips in 60 action classes
  • Kind of classes
    • NTU RGB+D: A1 to A60, NTU RGB+D 120: A1 to A120

• Cross-subject (X-Sub) Train/Valid subset

  • Training set: 40,320 clips
  • validation set: 16,560
  • The actors in the two subsets are different

• Cross-view (X-View) Train/Valid subset

  • Training set (captured by cameras 2 and 3): 37,920 clips
  • validation set (captured by camera 1): 18,960 clips

• Details of data

  • Each action is captured by 3 cameras at the same height but from different horizontal angles: −45, 0, 45
  • 3D joint locations of each frame detected by Kinect depth sensors
  • 25 joints for each subject in the skeleton sequences, while each video has no more than 2 subjects

- Kinetics-skeleton

• Download link: https://github.com/open-mmlab/mmskeleton/blob/master/doc/START_RECOGNITION.md

• Data volume and classes

  • 300,000 videos clips in 400 classes from YouTube videos
  • Kind of classes: refer to https://arxiv.org/pdf/1705.06950.pdf

• Train/Valid subset

  • Training set: 240,000 clips
  • Validation set: 20,000 clips
  • Filtering some data using samples_with_missing_skeletons.txt

• Details of data

  • Raw video clips without skeleton data: estimate the locations of 18 joints on every frame of the clips using the publicly available OpenPose toolbox

- FineGym

• Download link: https://sdolivia.github.io/FineGym/

• Data volume and classes

  • 29K videos clips in 99 classes from 303 competition recores, amounted to about 708 hour

  • Kind of classes

    • GYM99 (a more balanced setting): refer to https://sdolivia.github.io/FineGym/resources/dataset/gym99_categories.txt
    • GYM288 (a natural long-tailed setting): refer to https://sdolivia.github.io/FineGym/resources/dataset/gym288_categories.txt

• Train/Valid subset

  • Training set: 20,484 clips
  • Validation set: 8,521 clips

• Details of data

  • Organizing both the semantic and temporal annotations hierarchically

  • Semantic annotations: three-level categories of actions and sub-actions

    • Events
      • Coarsest level of the hierarchy
      • Actions belonging to different gymnastic routines
      • E.g. vault (VT), floor exercise (FX), uneven-bars (UB), and balance-beam (BB)
    • Sets
      • Mid-level categories
      • Describing sub-actions
      • A set holds several technically and visually similar elements
      • E.g. Flight-handspring, Beam-Turns, Flight-Salto etc.
    • Elements
      • Finest granularity are element categories
      • Equips sub-actions with more detailed descriptions than the set categories
      • E.g. a sub-action instance of the set beam-dismounts could be more precisely described as double salto backward tucked or other element categories in the set.

  • Two-levels temporal annotations

    • Locations of all events in a video
    • Locations of sub-actions in an action instance (i.e. event instance)

- Goyang Taekwondo Dataset

• Download link: https://sdolivia.github.io/FineGym/https://www.aihub.or.kr/aihubdata/data/view.do?currMenu=&topMenu=&aihubDataSe=realm&dataSetSn=71259

• Data volume and classes

  • Abount 300,000 Taekwondo action in 64 classes
  • classes: Refer to download link

• Train/Valid subset

  • Training set: 240,000 Taekwondo action
  • Validation set: 30,000 Taekwondo action

• Details of data

  • 8 directions multi-view camera image
  • Convert data by dividing three points: start point frame – base point frames – end point frame

Author

- LinkedIn: https://www.linkedin.com/in/taeyong-kong-016bb2154

- Blog URL: https://blog.naver.com/qbxlvnf11

- Email: [email protected], [email protected]