h1. *ATTENTION!*

Issue tracker is closed! will be closed on 2015-07-27!
All new tickets should be created on GitHub: https://github.com/Itseez/opencv/issues

Wiki is closed!
You can find migrated pages on GitHub: https://github.com/Itseez/opencv/wiki

h1. OpenCV Wiki

{{>toc}}

!http://opencv.org/wp-content/themes/opencv/images/logo.png!

OpenCV (Open Source Computer Vision) is a library of programming functions for realtime computer vision. It uses a "BSD license":http://opensource.org/licenses/BSD-3-Clause and hence it's free for both academic and commercial use. It has C++, C, Python and Java (Android) interfaces and supports Windows, Linux, Android, iOS and Mac OS. It has more than 2500 optimized algorithms. Adopted all around the world, OpenCV has more than 7 million downloads growing by nearly 200K/month. Usage ranges from interactive art, to mines inspection, stitching maps on the web on through advanced robotics.

* "Wiki map":http://code.opencv.org/projects/opencv/wiki/index
* "Roadmap":http://www.code.opencv.org/projects/opencv/roadmap

h2. GSoC 2015

" !GSoCOpenCV2015.jpg! ":http://code.opencv.org/projects/opencv/wiki/GSoC_2015

* *[[GSoC 2015|OpenCV Google Summer of Code 2015 Project Page]]*
* "We are an accepted organization in GSoC 2015!":http://www.google-melange.com/gsoc/org2/google/gsoc2015/opencv

"Wiki for Google Summer of Code":https://www.google-melange.com/gsoc/dashboard/google/gsoc2015

h2. Resources

h3. General

* "User site":http://opencv.org/, "News":http://opencv.org/category/news and "Help":http://answers.opencv.org.
* *Documentation:* http://opencv.org/documentation.html, including "Books":http://opencv.org/books.html, "Reference manual":http://docs.opencv.org/, "Tutorials":http://docs.opencv.org/doc/tutorials/tutorials.html and "Cheatsheet":http://docs.opencv.org/opencv_cheatsheet.pdf
* "ChangeLog":http://code.opencv.org/projects/opencv/wiki/ChangeLog for the latest releases

h3. Development

* [[How_to_contribute|How to Contribute]]
* Source Codes can be found at "GitHub":https://github.com/Itseez/opencv. The main OpenCV repository was converted to git and compactified. History now begins with the famous “atomic bomb” commit, that dates back to May the 11th, 2010.
** To get the source code, point your git client to @git://github.com/Itseez/opencv.git@. Here are [[Working_with_OpenCV_git_repository|instructions]].
<pre>
git clone git://github.com/Itseez/opencv.git
</pre>
** The rest of the history plus matches between git commits and SVN revisions are stored at a separate "OpenCV Attic" repository: git://code.opencv.org/opencv_attic.git.
** Also OpenCV Extra was put to a separate repository: git://code.opencv.org/opencv_extra.git.
* [[OpenCV Development Process]]
** [[Meeting_notes|Developer meeting notes]]

h2. Issue Tracking

Please note that OpenCV project, as any open-source project, welcomes contributions from users. Either you have implemented some new functionality, or you're able to localize and fix a bug by yourself, please make a "pull request":https://github.com/Itseez/opencv/pulls at the GitHub. It will be "automatically tested":http://pullrequest.opencv.org and reviewed by peers. Check your code for compliance with [[CodingStyleGuide|OpenCV Code Style Guide]] and please explain how your contribution might help others.

h3. Creating new tickets

All new tickets should be created on GitHub: https://github.com/Itseez/opencv/issues and https://github.com/Itseez/opencv_contrib/issues

Old issue tracker will be moved to read-only state: http://code.opencv.org/projects/opencv/issues

h3. Reporting bugs

* First of all ask about the issue at the Q&A forum: http://answers.opencv.org. Then try to debug it in your own environment, because it may take forever to just reproduce the issue on other workstation. If you succeed, submit the fix as a pull request, and your fix may be included to the very next OpenCV release! But if you can't debug it, please do as follows...

* Please, specify your platform (Windows 32/64bit, Linux x86/x64/ppc/..., MacOSX 32/64bit/ppc); compiler version; OpenCV version/revision; whether IPP, OpenMP, MMX, SSE ... have been enabled or not, and any other information that let us reproduce the environment, identify and localize the problem.

* A sample code reproducing the problem helps us the most. It would really help if you could implement a unit-test that fails! Please check source:samples - for the preferred style (small code size, cross-platform). There is *no need* to provide any project files or makefiles, if it is a short single-file sample, we could build it and run in a minute. If we can reproduce the problem, we can fix it quickly.

* If your application is complex, and the problem happens somewhere in the middle, often it is still possible to create a short standalone sample:
** First, capture and store the data that you pass to the function using FileStorage.
** Then copy the function call and put the corresponding reading from FileStorage in front of it.

h2. Topic Pages

* [[GSoC 2015|Google Summer of Code 2015 (GSoC 2015) Ideas Page]]
* [[Workshops|Workshops]]
* [[Tutorials|Tutorials]]
* [[VisionChallenge|Vision Challenge Sponsored by OpenCV, CVPR 2015!!]]
* [[New functionality discussion]]
* [[CARMA platform, compilation and testing]]