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OpenPose represents the first real-time multi-person system to jointly detect human body, hand, facial, and foot keypoints (in total 135 keypoints) on single images.

• Functionality:
  • 2D real-time multi-person keypoint detection:
    • 15 or 18 or 25-keypoint body/foot keypoint estimation. Running time invariant to number of detected people.
    • 2x21-keypoint hand keypoint estimation. Currently, running time depends on number of detected people.
    • 70-keypoint face keypoint estimation. Currently, running time depends on number of detected people.
  • 3D real-time single-person keypoint detection:
    • 3-D triangulation from multiple single views.
    • Synchronization of Flir cameras handled.
    • Compatible with Flir/Point Grey cameras, but provided C++ demos to add your custom input.
  • Calibration toolbox:
    • Easy estimation of distortion, intrinsic, and extrinsic camera parameters.
  • Single-person tracking for further speed up or visual smoothing.
• Input: Image, video, webcam, Flir/Point Grey and IP camera. Included C++ demos to add your custom input.
• Output: Basic image + keypoint display/saving (PNG, JPG, AVI, ...), keypoint saving (JSON, XML, YML, ...), and/or keypoints as array class.
• OS: Ubuntu (14, 16), Windows (8, 10), Mac OSX, Nvidia TX2.
• Others:
  • Available: command-line demo, C++ wrapper, and C++ API.
  • CUDA (Nvidia GPU), OpenCL (AMD GPU), and CPU versions.

• Sep 2018: Experimental single-person tracker for further speed up or visual smoothing!
• Jun 2018: Combined body-foot model released! 40% faster and 5% more accurate!
• Jun 2018: Python API released!
• Jun 2018: OpenCL/AMD graphic card version released!
• Jun 2018: Calibration toolbox released!
• Jun 2018: Mac OSX version (CPU) released!
• Mar 2018: CPU version!
• Mar 2018: 3-D keypoint reconstruction module (from multiple camera views)!

For further details, check all released features and release notes.

Inference time comparison between the 3 available pose estimation libraries: OpenPose, Alpha-Pose (fast Pytorch version), and Mask R-CNN:

1. Features
2. Latest Features
3. Results
4. Installation, Reinstallation and Uninstallation
5. Quick Start
6. Output
7. Speeding Up OpenPose and Benchmark
8. Send Us Failure Cases and Feedback!
9. Authors and Contributors
10. Citation
11. License

Windows portable version: Simply download and use the latest version from the Releases section.

Otherwise, check doc/installation.md for instructions on how to build OpenPose from source.

Most users do not need the OpenPose C++/Python API, but can simply use the OpenPose Demo:

• OpenPose Demo: To easily process images/video/webcam and display/save the results. See doc/demo_overview.md. E.g., run OpenPose in a video with:

# Ubuntu
./build/examples/openpose/openpose.bin --video examples/media/video.avi
:: Windows - Portable Demo
bin\OpenPoseDemo.exe --video examples\media\video.avi

• Calibration toolbox: To easily calibrate your cameras for 3-D OpenPose or any other stereo vision task. See doc/modules/calibration_module.md.

• OpenPose C++ API: If you want to read a specific input, and/or add your custom post-processing function, and/or implement your own display/saving, check the C++ API tutorial on examples/tutorial_api_cpp/ and doc/library_introduction.md. You can create your custom code on examples/user_code/ and quickly compile it with CMake when compiling the whole OpenPose project. Quickly add your custom code: See examples/user_code/README.md for further details.

• OpenPose Python API: Analogously to the C++ API, find the tutorial for the Python API on examples/tutorial_api_python/.

• Adding an extra module: Check doc/library_add_new_module.md.

• Standalone face or hand detector:

  • Face keypoint detection without body keypoint detection: If you want to speed it up (but also reduce amount of detected faces), check the OpenCV-face-detector approach in doc/standalone_face_or_hand_keypoint_detector.md.
  • Use your own face/hand detector: You can use the hand and/or face keypoint detectors with your own face or hand detectors, rather than using the body detector. E.g., useful for camera views at which the hands are visible but not the body (OpenPose detector would fail). See doc/standalone_face_or_hand_keypoint_detector.md.

Output (format, keypoint index ordering, etc.) in doc/output.md.

Check the OpenPose Benchmark as well as some hints to speed up and/or reduce the memory requirements for OpenPose on doc/speed_up_preserving_accuracy.md.

Our library is open source for research purposes, and we want to continuously improve it! So please, let us know if...

1. ... you find videos or images where OpenPose does not seems to work well. Feel free to send them to [email protected] (email only for failure cases!), we will use them to improve the quality of the algorithm!
2. ... you find any bug (in functionality or speed).
3. ... you added some functionality to some class or some new Worker subclass which we might potentially incorporate.
4. ... you know how to speed up or improve any part of the library.
5. ... you have a request about possible functionality.
6. ... etc.

Just comment on GitHub or make a pull request and we will answer as soon as possible! Send us an email if you use the library to make a cool demo or YouTube video!

OpenPose is authored by Gines Hidalgo, Zhe Cao, Tomas Simon, Shih-En Wei, Hanbyul Joo, and Yaser Sheikh. Currently, it is being maintained by Gines Hidalgo and Yaadhav Raaj. The original CVPR 2017 repo includes Matlab and Python versions, as well as the training code. The body pose estimation work is based on the original ECCV 2016 demo.

In addition, OpenPose would not be possible without the CMU Panoptic Studio dataset.

We would also like to thank all the people who helped OpenPose in any way. The main contributors are listed in doc/contributors.md.

Please cite these papers in your publications if it helps your research (the face keypoint detector was trained using the procedure described in [Simon et al. 2017] for hands):

@inproceedings{cao2017realtime,
  author = {Zhe Cao and Tomas Simon and Shih-En Wei and Yaser Sheikh},
  booktitle = {CVPR},
  title = {Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields},
  year = {2017}
}

@inproceedings{simon2017hand,
  author = {Tomas Simon and Hanbyul Joo and Iain Matthews and Yaser Sheikh},
  booktitle = {CVPR},
  title = {Hand Keypoint Detection in Single Images using Multiview Bootstrapping},
  year = {2017}
}

@inproceedings{wei2016cpm,
  author = {Shih-En Wei and Varun Ramakrishna and Takeo Kanade and Yaser Sheikh},
  booktitle = {CVPR},
  title = {Convolutional pose machines},
  year = {2016}
}

Links to the papers:

• Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields
• Hand Keypoint Detection in Single Images using Multiview Bootstrapping
• Convolutional Pose Machines

OpenPose is freely available for free non-commercial use, and may be redistributed under these conditions. Please, see the license for further details. Interested in a commercial license? Check this FlintBox link. For commercial queries, use the Directly Contact Organization section from the FlintBox link and also send a copy of that message to Yaser Sheikh.