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  • Nov 2022: AlphaPose paper is released! Checkout the paper for more details about this project.
  • Sep 2022: Jittor version of AlphaPose is released! It achieves 1.45x speed up with resnet50 backbone on the training stage.
  • July 2022: v0.6.0 version of AlphaPose is released! HybrIK for 3D pose and shape estimation is supported!
  • Jan 2022: v0.5.0 version of AlphaPose is released! Stronger whole body(face,hand,foot) keypoints! More models are availabel. Checkout docs/
  • Aug 2020: v0.4.0 version of AlphaPose is released! Stronger tracking! Include whole body(face,hand,foot) keypoints! Colab now available.
  • Dec 2019: v0.3.0 version of AlphaPose is released! Smaller model, higher accuracy!
  • Apr 2019: MXNet version of AlphaPose is released! It runs at 23 fps on COCO validation set.
  • Feb 2019: CrowdPose is integrated into AlphaPose Now!
  • Dec 2018: General version of PoseFlow is released! 3X Faster and support pose tracking results visualization!
  • Sep 2018: v0.2.0 version of AlphaPose is released! It runs at 20 fps on COCO validation set (4.6 people per image on average) and achieves 71 mAP!


AlphaPose is an accurate multi-person pose estimator, which is the first open-source system that achieves 70+ mAP (75 mAP) on COCO dataset and 80+ mAP (82.1 mAP) on MPII dataset. To match poses that correspond to the same person across frames, we also provide an efficient online pose tracker called Pose Flow. It is the first open-source online pose tracker that achieves both 60+ mAP (66.5 mAP) and 50+ MOTA (58.3 MOTA) on PoseTrack Challenge dataset.

AlphaPose supports both Linux and Windows!

COCO 17 keypoints

Halpe 26 keypoints + tracking

SMPL + tracking


Pose Estimation

Results on COCO test-dev 2015:

Method AP @0.5:0.95 AP @0.5 AP @0.75 AP medium AP large
OpenPose (CMU-Pose) 61.8 84.9 67.5 57.1 68.2
Detectron (Mask R-CNN) 67.0 88.0 73.1 62.2 75.6
AlphaPose 73.3 89.2 79.1 69.0 78.6

Results on MPII full test set:

Method Head Shoulder Elbow Wrist Hip Knee Ankle Ave
OpenPose (CMU-Pose) 91.2 87.6 77.7 66.8 75.4 68.9 61.7 75.6
Newell & Deng 92.1 89.3 78.9 69.8 76.2 71.6 64.7 77.5
AlphaPose 91.3 90.5 84.0 76.4 80.3 79.9 72.4 82.1

More results and models are available in the docs/

Pose Tracking

Please read trackers/ for details.


Please read docs/ for details.


Please check out docs/

Model Zoo

Please check out docs/

Quick Start

  • Colab: We provide a colab example for your quick start.

  • Inference: Inference demo

./scripts/ ${CONFIG} ${CHECKPOINT} ${VIDEO_NAME} # ${OUTPUT_DIR}, optional

Inference SMPL (Download the SMPL model basicModel_neutral_lbs_10_207_0_v1.0.0.pkl from here and put it in model_files/).

./scripts/ ./configs/smpl/256x192_adam_lr1e-3-res34_smpl_24_3d_base_2x_mix.yaml ${CHECKPOINT} ${VIDEO_NAME} # ${OUTPUT_DIR}, optional

For high level API, please refer to ./scripts/ To enable tracking, please refer to this page.

  • Training: Train from scratch
./scripts/ ${CONFIG} ${EXP_ID}
  • Validation: Validate your model on MSCOCO val2017
./scripts/ ${CONFIG} ${CHECKPOINT}


Demo using FastPose model.

./scripts/ configs/coco/resnet/256x192_res50_lr1e-3_1x.yaml pretrained_models/fast_res50_256x192.pth ${VIDEO_NAME}
python scripts/ --cfg configs/coco/resnet/256x192_res50_lr1e-3_1x.yaml --checkpoint pretrained_models/fast_res50_256x192.pth --indir examples/demo/
#or if you want to use yolox-x as the detector
python scripts/ --detector yolox-x --cfg configs/coco/resnet/256x192_res50_lr1e-3_1x.yaml --checkpoint pretrained_models/fast_res50_256x192.pth --indir examples/demo/

Train FastPose on mscoco dataset.

./scripts/ ./configs/coco/resnet/256x192_res50_lr1e-3_1x.yaml exp_fastpose

More detailed inference options and examples, please refer to

Common issue & FAQ

Check out for faq. If it can not solve your problems or if you find any bugs, don't hesitate to comment on GitHub or make a pull request!


AlphaPose is based on RMPE(ICCV'17), authored by Hao-Shu Fang, Shuqin Xie, Yu-Wing Tai and Cewu Lu, Cewu Lu is the corresponding author. Currently, it is maintained by Jiefeng Li*, Hao-shu Fang*, Haoyi Zhu, Yuliang Xiu and Chao Xu.

The main contributors are listed in doc/


  • Multi-GPU/CPU inference
  • 3D pose
  • add tracking flag
  • PyTorch C++ version
  • Add model trained on mixture dataset (Check the model zoo)
  • dense support
  • small box easy filter
  • Crowdpose support
  • Speed up PoseFlow
  • Add stronger/light detectors (yolox is now supported)
  • High level API (check the scripts/

We would really appreciate if you can offer any help and be the contributor of AlphaPose.


Please cite these papers in your publications if it helps your research:

  author = {Fang, Hao-Shu and Li, Jiefeng and Tang, Hongyang and Xu, Chao and Zhu, Haoyi and Xiu, Yuliang and Li, Yong-Lu and Lu, Cewu},
  journal = {IEEE Transactions on Pattern Analysis and Machine Intelligence},
  title = {AlphaPose: Whole-Body Regional Multi-Person Pose Estimation and Tracking in Real-Time},
  year = {2022}

  title={{RMPE}: Regional Multi-person Pose Estimation},
  author={Fang, Hao-Shu and Xie, Shuqin and Tai, Yu-Wing and Lu, Cewu},

    title={Crowdpose: Efficient crowded scenes pose estimation and a new benchmark},
    author={Li, Jiefeng and Wang, Can and Zhu, Hao and Mao, Yihuan and Fang, Hao-Shu and Lu, Cewu},
    booktitle={Proceedings of the IEEE/CVF conference on computer vision and pattern recognition},

If you used the 3D mesh reconstruction module, please also cite:

    title={Hybrik: A hybrid analytical-neural inverse kinematics solution for 3d human pose and shape estimation},
    author={Li, Jiefeng and Xu, Chao and Chen, Zhicun and Bian, Siyuan and Yang, Lixin and Lu, Cewu},
    booktitle={Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition},

If you used the PoseFlow tracking module, please also cite:

  author = {Xiu, Yuliang and Li, Jiefeng and Wang, Haoyu and Fang, Yinghong and Lu, Cewu},
  title = {{Pose Flow}: Efficient Online Pose Tracking},
  year = {2018}


AlphaPose is freely available for free non-commercial use, and may be redistributed under these conditions. For commercial queries, please drop an e-mail at mvig.alphapose[at]gmail[dot]com and cc lucewu[[at]sjtu[dot]edu[dot]cn. We will send the detail agreement to you.