The Open Source Computer Vision Library has >2500 algorithms, extensive documentation and sample code for real-time computer vision. It works on Windows, Linux, Mac OS X, Android and iOS.
Q&A forum: answers.opencv.org
Please pay special attention to our tutorials! http://docs.opencv.org/doc/tutorials/tutorials.html
Books about the OpenCV are described here: http://opencv.org/books.html
pretty powerful ,easy to use
Very high quality, excellent project. Thank you OpenCV!
Awesome, powerful and simple to use library with BSD license. If you work in computer vision or any close fields it is exactly what could increase your efficiency an order of magnitude or even more. Thanks to developers... I love you