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## OpenCV: Open Source Computer Vision Library
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### Keep OpenCV Free
OpenCV is raising funds to keep the library free for everyone, and we need the support of the entire community to do it. [Donate to OpenCV on IndieGoGo ](http://igg.me/at/opencv5 ) before the campaign ends on December 16 to show your support.
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### Resources
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* Homepage: < https: // opencv . org >
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* Courses: < https: // opencv . org / courses >
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* Docs: < https: // docs . opencv . org / 4 . x />
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* Q& A forum: < https: // forum . opencv . org >
* previous forum (read only): < http: // answers . opencv . org >
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* Issue tracking: < https: // github . com / opencv / opencv / issues >
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* Additional OpenCV functionality: < https: // github . com / opencv / opencv_contrib >
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### Contributing
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Please read the [contribution guidelines ](https://github.com/opencv/opencv/wiki/How_to_contribute ) before starting work on a pull request.
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#### Summary of the guidelines:
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* One pull request per issue;
* Choose the right base branch;
* Include tests and documentation;
* Clean up "oops" commits before submitting;
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* Follow the [coding style guide ](https://github.com/opencv/opencv/wiki/Coding_Style_Guide ).
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### Additional Resources
* [Submit your OpenCV-based project ](https://form.jotform.com/233105358823151 ) for inclusion in Community Friday on opencv.org
* [Subscribe to the OpenCV YouTube Channel ](http://youtube.com/@opencvofficial ) featuring OpenCV Live, an hour-long streaming show
* [Follow OpenCV on LinkedIn ](http://linkedin.com/company/opencv/ ) for daily posts showing the state-of-the-art in computer vision & AI
* [Apply to be an OpenCV Volunteer ](https://form.jotform.com/232745316792159 ) to help organize events and online campaigns as well as amplify them
* [Follow OpenCV on Mastodon ](http://mastodon.social/@opencv ) in the Fediverse
* [Follow OpenCV on Twitter ](https://twitter.com/opencvlive )