MODNet/README.md

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<h2 align="center">MODNet: Is a Green Screen Really Necessary for Real-Time Portrait Matting?</h2>
<img src="doc/gif/homepage_demo.gif" width="100%">
<p align="center">
<a href="https://arxiv.org/pdf/2011.11961.pdf">Arxiv Preprint</a> |
<a href="https://youtu.be/PqJ3BRHX3Lc">Supplementary Video</a> |
<a href="https://colab.research.google.com/drive/1Pt3KDSc2q7WxFvekCnCLD8P0gBEbxm6J?usp=sharing">Video Matting Demo</a> :fire: |
<a href="https://colab.research.google.com/drive/1GANpbKT06aEFiW-Ssx0DQnnEADcXwQG6?usp=sharing">Image Matting Demo</a> :fire:
</p>
<div align="center">This is the official project of our paper <b>Is a Green Screen Really Necessary for Real-Time Portrait Matting?</b></div>
<div align="center">MODNet is a <b>trimap-free</b> model for portrait matting in <b>real time</b> under <b>changing scenes</b>.</div>
---
## News
- [Dec 10 2020] Release [Video Matting Demo](https://colab.research.google.com/drive/1Pt3KDSc2q7WxFvekCnCLD8P0gBEbxm6J?usp=sharing) and [Image Matting Demo](https://colab.research.google.com/drive/1GANpbKT06aEFiW-Ssx0DQnnEADcXwQG6?usp=sharing).
- [Nov 24 2020] Release [Arxiv Preprint](https://arxiv.org/pdf/2011.11961.pdf) and [Supplementary Video](https://youtu.be/PqJ3BRHX3Lc).
## Video Matting Demo
We provide two real-time portrait video matting demos based on WebCam. When using the demo, you can move the WebCam around at will.
If you have an Ubuntu system, we recommend you to try the [offline demo](demo/video_matting/webcam) to get a higher *fps*. Otherwise, you can access the [online Colab demo](https://colab.research.google.com/drive/1Pt3KDSc2q7WxFvekCnCLD8P0gBEbxm6J?usp=sharing).
<img src="doc/gif/video_matting_demo.gif">
## Image Matting Demo
We provide an [online Colab demo](https://colab.research.google.com/drive/1GANpbKT06aEFiW-Ssx0DQnnEADcXwQG6?usp=sharing) for portrait image matting.
It allows you to upload portrait images and predict/visualize/download the alpha mattes.
<img src="doc/gif/image_matting_demo.gif">
## TO DO
- Release training code (scheduled in **Jan. 2021**)
- Release PPM-100 validation benchmark (scheduled in **Feb. 2021**)
## License
This project is released under the [Creative Commons Attribution NonCommercial ShareAlike 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode) license.
## Acknowledgement
We thank [City University of Hong Kong](https://www.cityu.edu.hk/) and [SenseTime](https://www.sensetime.com/) for their support to this project.
## Citation
If this work helps your research, please consider to cite:
```bibtex
@article{MODNet,
author = {Zhanghan Ke and Kaican Li and Yurou Zhou and Qiuhua Wu and Xiangyu Mao and Qiong Yan and Rynson W.H. Lau},
title = {Is a Green Screen Really Necessary for Real-Time Portrait Matting?},
journal={ArXiv},
volume={abs/2011.11961},
year = {2020},
}
```
## Contact
This project is currently maintained by Zhanghan Ke ([@ZHKKKe](https://github.com/ZHKKKe)).
If you have any questions, please feel free to contact `kezhanghan@outlook.com`.