README.md

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    <img src=".github/Logo_main_black.png" width="300">
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| **Build Type**   |`Linux`           |`MacOS`           |`Windows`         |
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[**OpenPose**](https://github.com/CMU-Perceptual-Computing-Lab/openpose) has represented the **first real-time multi-person system to jointly detect human body, hand, facial, and foot keypoints (in total 135 keypoints) on single images**.

It is **authored by** [**Ginés Hidalgo**](https://www.gineshidalgo.com), [**Zhe Cao**](https://people.eecs.berkeley.edu/~zhecao), [**Tomas Simon**](http://www.cs.cmu.edu/~tsimon), [**Shih-En Wei**](https://scholar.google.com/citations?user=sFQD3k4AAAAJ&hl=en), [**Hanbyul Joo**](https://jhugestar.github.io), **and** [**Yaser Sheikh**](http://www.cs.cmu.edu/~yaser). It is **maintained by** [**Ginés Hidalgo**](https://www.gineshidalgo.com) **and** [**Yaadhav Raaj**](https://www.raaj.tech). OpenPose would not be possible without the [**CMU Panoptic Studio dataset**](http://domedb.perception.cs.cmu.edu). We would also like to thank all the people who [has helped OpenPose in any way](doc/8_authors_and_contributors.md).



<p align="center">
    <img src=".github/media/pose_face_hands.gif" width="480">
    <br>
    <sup>Authors <a href="https://www.gineshidalgo.com" target="_blank">Ginés Hidalgo</a> (left) and <a href="https://jhugestar.github.io" target="_blank">Hanbyul Joo</a> (right) in front of the <a href="http://domedb.perception.cs.cmu.edu" target="_blank">CMU Panoptic Studio</a></sup>
</p>



## Contents
1. [Results](#results)
2. [Features](#features)
3. [Related Work](#related-work)
4. [Installation](#installation)
5. [Quick Start](#quick-start)
6. [Send Us Feedback!](#send-us-feedback)
7. [Citation](#citation)
8. [License](#license)



## Results
### Body and Foot Estimation
<p align="center">
    <img src=".github/media/dance_foot.gif" width="360">
    <br>
    <sup>Testing the <a href="https://www.youtube.com/watch?v=2DiQUX11YaY" target="_blank"><i>Crazy Uptown Funk flashmob in Sydney</i></a> video sequence with OpenPose</sup>
</p>

### 3D Reconstruction Module (Body, Foot, Face, and Hands)
<p align="center">
    <img src=".github/media/openpose3d.gif" width="360">
    <br>
    <sup>Testing the 3D Reconstruction Module of OpenPose</sup>
</p>

### Body, Foot, Face, and Hands Estimation
<p align="center">
    <img src=".github/media/pose_face.gif" width="360">
    <img src=".github/media/pose_hands.gif" width="360">
    <br>
    <sup>Authors <a href="https://www.gineshidalgo.com" target="_blank">Ginés Hidalgo</a> (left image) and <a href="http://www.cs.cmu.edu/~tsimon" target="_blank">Tomas Simon</a> (right image) testing OpenPose</sup>
</p>

### Unity Plugin
<p align="center">
    <img src=".github/media/unity_main.png" width="240">
    <img src=".github/media/unity_body_foot.png" width="240">
    <img src=".github/media/unity_hand_face.png" width="240">
    <br>
    <sup><a href="https://ziutinyat.github.io/" target="_blank">Tianyi Zhao</a> and <a href="https://www.gineshidalgo.com" target="_blank">Ginés Hidalgo</a> testing the <a href="https://github.com/CMU-Perceptual-Computing-Lab/openpose_unity_plugin" target="_blank">OpenPose Unity Plugin</a></sup>
</p>

### Runtime Analysis
We show an inference time comparison between the 3 available pose estimation libraries (same hardware and conditions): OpenPose, Alpha-Pose (fast Pytorch version), and Mask R-CNN. The OpenPose runtime is constant, while the runtime of Alpha-Pose and Mask R-CNN grow linearly with the number of people. More details [**here**](https://arxiv.org/abs/1812.08008).
<p align="center">
    <img src=".github/media/openpose_vs_competition.png" width="360">
</p>



## Features
- **Main Functionality**:
    - **2D real-time multi-person keypoint detection**:
        - 15, 18 or **25-keypoint body/foot keypoint estimation**, including **6 foot keypoints**. **Runtime invariant to number of detected people**.
        - **2x21-keypoint hand keypoint estimation**. **Runtime depends on number of detected people**. See [**OpenPose Training**](https://github.com/CMU-Perceptual-Computing-Lab/openpose_train) for a runtime invariant alternative.
        - **70-keypoint face keypoint estimation**. **Runtime depends on number of detected people**. See [**OpenPose Training**](https://github.com/CMU-Perceptual-Computing-Lab/openpose_train) for a runtime invariant alternative.
    - [**3D real-time single-person keypoint detection**](doc/advanced/3d_reconstruction_module.md):
        - 3D triangulation from multiple single views.
        - Synchronization of Flir cameras handled.
        - Compatible with Flir/Point Grey cameras.
    - [**Calibration toolbox**](doc/advanced/calibration_module.md): Estimation of distortion, intrinsic, and extrinsic camera parameters.
    - **Single-person tracking** for further speedup or visual smoothing.
- **Input**: Image, video, webcam, Flir/Point Grey, IP camera, and support to add your own custom input source (e.g., depth camera).
- **Output**: Basic image + keypoint display/saving (PNG, JPG, AVI, ...), keypoint saving (JSON, XML, YML, ...), keypoints as array class, and support to add your own custom output code (e.g., some fancy UI).
- **OS**: Ubuntu (20, 18, 16, 14), Windows (10, 8), Mac OSX, Nvidia TX2.
- **Hardware compatibility**: CUDA (Nvidia GPU), OpenCL (AMD GPU), and non-GPU (CPU-only) versions.
- **Usage Alternatives**:
    - [**Command-line demo**](doc/1_demo.md) for built-in functionality.
    - [**C++ API**](examples/tutorial_api_cpp/) and [**Python API**](doc/3_python_api.md) for custom functionality. E.g., adding your custom inputs, pre-processing, post-posprocessing, and output steps.

For further details, check the [major released features](doc/6_major_released_features.md) and [release notes](doc/7_release_notes.md) docs.



## Related Work
- [**OpenPose training code**](https://github.com/CMU-Perceptual-Computing-Lab/openpose_train)
- [**OpenPose foot dataset**](https://cmu-perceptual-computing-lab.github.io/foot_keypoint_dataset/)
- [**OpenPose Unity Plugin**](https://github.com/CMU-Perceptual-Computing-Lab/openpose_unity_plugin)
- OpenPose papers published in [**IEEE TPAMI** and **CVPR**](#citation). [Cite them](#citation) in your publications if it helps your research!



## Installation
If you want to use OpenPose without compiling or writing any code, simply [download and use the latest Windows portable version of OpenPose](doc/installation/0_index.md#windows-portable-demo)! Otherwise, you can also [build OpenPose from source](doc/installation/0_index.md#compiling-and-running-openpose-from-source).

See [doc/installation/0_index.md](doc/installation/0_index.md) for more details.



## Quick Start
Most users do not need to know C++ or Python, they can simply use the OpenPose Demo in their command-line tool (e.g., PowerShell/Terminal). E.g., this would run OpenPose on the webcam and display the body keypoints:
```
# Ubuntu
./build/examples/openpose/openpose.bin
```
```
:: Windows - Portable Demo
bin\OpenPoseDemo.exe --video examples\media\video.avi
```

You can also add any of the available flags in any order. Do you also want to add face and/or hands? Add the `--face` and/or `--hand` flags. Do you also want to save the output keypoints on JSON files on disk? Add the `--write_json` flag, etc.
```
# Ubuntu
./build/examples/openpose/openpose.bin --video examples/media/video.avi --face --hand --write_json output_json_folder/
```
```
:: Windows - Portable Demo
bin\OpenPoseDemo.exe --video examples\media\video.avi --face --hand --write_json output_json_folder/
```

After [installing](#installation) OpenPose, check [doc/0_index.md](doc/0_index.md) for a quick overview of all the alternatives and tutorials.



## Send Us Feedback!
Our library is open source for research purposes, and we want to continuously improve it! So let us know if you...
1. Find any bug (in functionality or speed).
2. Add some functionality on top of OpenPose which we might want to add.
3. Know how to speed up or improve any part of OpenPose.
4. Want to share your cool demo or project made on top of OpenPose (you can email it to us too!).

Just create a new GitHub issue or a pull request and we will answer as soon as possible!



## Citation
Please cite these papers in your publications if it helps your research. All of OpenPose is based on [OpenPose: Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields](https://arxiv.org/abs/1812.08008), while the hand and face detectors also use [Hand Keypoint Detection in Single Images using Multiview Bootstrapping](https://arxiv.org/abs/1704.07809) (the face detector was trained using the same procedure than the hand detector).

    @article{8765346,
      author = {Z. {Cao} and G. {Hidalgo Martinez} and T. {Simon} and S. {Wei} and Y. A. {Sheikh}},
      journal = {IEEE Transactions on Pattern Analysis and Machine Intelligence},
      title = {OpenPose: Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields},
      year = {2019}
    }

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

Paper links:
- OpenPose: Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields:
    - [IEEE TPAMI](https://ieeexplore.ieee.org/document/8765346)
    - [ArXiv](https://arxiv.org/abs/1812.08008)
- [Hand Keypoint Detection in Single Images using Multiview Bootstrapping](https://arxiv.org/abs/1704.07809)
- [Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields](https://arxiv.org/abs/1611.08050)
- [Convolutional Pose Machines](https://arxiv.org/abs/1602.00134)



## License
OpenPose is freely available for free non-commercial use, and may be redistributed under these conditions. Please, see the [license](./LICENSE) for further details. Interested in a commercial license? Check this [FlintBox link](https://cmu.flintbox.com/#technologies/b820c21d-8443-4aa2-a49f-8919d93a8740). For commercial queries, use the `Contact` section from the [FlintBox link](https://cmu.flintbox.com/#technologies/b820c21d-8443-4aa2-a49f-8919d93a8740) and also send a copy of that message to [Yaser Sheikh](mailto:yaser@cs.cmu.edu).