README
OpenCV: Open Source Computer Vision Library
Resources
- Homepage: https://opencv.org
- Courses: https://opencv.org/courses
- Docs: https://docs.opencv.org/4.x/
- Q&A forum: https://forum.opencv.org
- previous forum (read only): http://answers.opencv.org
- Issue tracking: https://github.com/opencv/opencv/issues
- Additional OpenCV functionality: https://github.com/opencv/opencv_contrib
- Donate to OpenCV: https://opencv.org/support/
Contributing
Please read the contribution guidelines before starting work on a pull request.
Summary of the guidelines:
- One pull request per issue;
- Choose the right base branch;
- Include tests and documentation;
- Clean up "oops" commits before submitting;
- Follow the coding style guide.
Additional Resources
- Submit your OpenCV-based project for inclusion in Community Friday on opencv.org
- Subscribe to the OpenCV YouTube Channel featuring OpenCV Live, an hour-long streaming show
- Follow OpenCV on LinkedIn for daily posts showing the state-of-the-art in computer vision & AI
- Apply to be an OpenCV Volunteer to help organize events and online campaigns as well as amplify them
- Follow OpenCV on Mastodon in the Fediverse
- Follow OpenCV on Twitter
- OpenCV.ai: Computer Vision and AI development services from the OpenCV team.
Languages
C++87.5%
C3.1%
Python3%
CMake2.1%
Java1.5%
Objective-C++0.8%
Cuda0.7%
Swift0.6%
JavaScript0.5%
Objective-C0.2%
Maintainers
Compatibility
Versions
4.13.0.bcr.5 +<1h2026-03-06 | |
4.12.0.bcr.3 +2d2026-03-06 | |
4.13.0.bcr.4 +3d2026-03-03 | |
4.13.0.bcr.3 +7d2026-02-27 | |
4.13.0.bcr.1 +9d2026-02-18 | |
4.13.0 +1h2026-02-08 | |
4.12.0.bcr.2 +1.7mo2026-02-08 | |
4.12.0.bcr.1 +1.6mo2025-12-17 | |
4.12.0 +25d2025-10-28 | |
4.11.0.bcr.3 +3.6mo2025-10-03 | |
4.11.0.bcr.2 +1.4mo2025-06-17 | |
4.11.0.bcr.1 +8d2025-05-07 | |
4.11.02025-04-29 |