OBS Plugin: Portrait Background Removal / Virtual Green-screen and Low-Light Enhancement

A plugin for OBS Studio that allows you to replace the background in portrait images and video, as well as enhance low-light scenes.

⬇️ Download & Install OBS Background Removal ⬇️

Or, browse versions on releases page.

Not working? Please try the Lite version (Live Background Removal Lite) developed by one of us (Kaito Udagawa).

Usage

Check out the usage guide page for usage walkthrough and recommendations.

Additional tutorial videos:

• ▶︎ Official guide to the Background Removal plugin for OBS Studio on YouTube
• Depth of Field effect: https://youtu.be/jC3EKSpNjQk
• Low-light enhancement: https://youtu.be/WSBLYWFrn2Q
• Remove background from ANY object (not just human): https://youtu.be/N74VCDCToX8

How to build from source

Windows:

git clone https://github.com/royshil/obs-backgroundremoval.git

Platforms we support building from source officially:

git clone https://github.com/royshil/obs-backgroundremoval.git
cd obs-backgroundremoval
sudo ./bin/bootstrap
./bin/setup
./bin/build
sudo dpkg -i release/obs-backgroundremoval-*-linux-gnu.deb

The supported platforms are:

• Debian Forky (x86_64 and arm64)

We plan to add building scripts for popular platforms such as Windows, Mac, and various distributions of Linux.

Introduction

This plugin is meant to make it easy to replace the background in portrait images and video. It is using a neural network to predict the mask of the portrait and remove the background pixels. It's easily composable with other OBS plugins to replace the background with e.g. an image or a transparent color.

If you like this work, which is given to you completely free of charge, please consider supporting it by sponsoring us on GitHub:

• https://github.com/sponsors/royshil
• https://github.com/sponsors/umireon

Support and Help

Reach out to us on GitHub Discussions or the OBS Plugins forum for online / immediate help.

If you found a bug or want to suggest a feature or improvement please open an issue.

If you are looking for hands-on help or private consultation please select a sponsorship tier.

Technical Details

GPU support:

• On Windows, we plan to support WinML acceleration.
• On Mac we support CoreML for acceleration, which is efficient on Apple Silicon. Note: This plugin does not support cross-architecture translation (Rosetta2). Intel binaries on Apple Silicon or Apple Silicon binaries on Intel will crash.
• On Linux CUDA, ROCM (deprecated in ONNX Runtime 1.23.0), and MIGraphX are supported if this plugin is built from source. Ensure your ONNX Runtime installation has CUDA, ROCM, or MIGraphX support. For AMD GPUs, MIGraphX is recommended as ROCM was removed from ONNX Runtime starting with version 1.23.0.
• The goal of this plugin is to be available for everyone on every system, even if they don't own a GPU.

Number of CPU threads is controllable through the UI settings. A 2-thread setting works best.

The pretrained model weights used for portrait foreground segmentation are taken from:

• https://github.com/anilsathyan7/Portrait-Segmentation/tree/master/SINet
• https://github.com/PaddlePaddle/PaddleSeg/tree/release/2.7/contrib/PP-HumanSeg
• https://github.com/PINTO0309/PINTO_model_zoo/tree/main/082_MediaPipe_Meet_Segmentation
• https://github.com/PeterL1n/RobustVideoMatting
• https://github.com/PINTO0309/PINTO_model_zoo/tree/main/384_TCMonoDepth and https://github.com/yu-li/TCMonoDepth

Image enhancement (low light) models are taken from:

• https://github.com/PINTO0309/PINTO_model_zoo/tree/main/213_TBEFN
• https://github.com/PINTO0309/PINTO_model_zoo/tree/main/372_URetinex-Net
• https://github.com/PINTO0309/PINTO_model_zoo/tree/main/370_Semantic-Guided-Low-Light-Image-Enhancement

Some more information about how I built it: https://www.morethantechnical.com/2021/04/15/obs-plugin-for-portrait-background-removal-with-onnx-sinet-model/ and https://www.morethantechnical.com/2023/05/20/building-an-obs-background-removal-plugin-a-walkthrough/

Code Walkthrough

This video on YouTube will take you through the major parts of the code and explain them.

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