I did not check with OpenCV for a few months. Today I noticed that a new version of OpenCV is released. This wonderful vision library is getting better and better in every release. Last time, I felt poorly about the documentation on OpenCV. I found most of its documents are just the comments provided during writing the codes which somebody has extracted using tools like Doxygen etc. Now in 2.3, the documentation page has been changed thoroughly. It has been divided into three major parts: API reference, User Guide and Tutorials. The tutorials part is open for anybody to contribute on a specific topic. I am hoping to write something here soon.