In my opinion, the new opencv3 book is the way to go. It was released this past January. Learning OpenCV 3: Computer Vision in C++ with the OpenCV Library Tha

In my opinion, the new opencv3 book is the way to go. It was released this past January. Learning OpenCV 3: Computer Vision in C++ with the OpenCV Library That's a great book to learn opencv in c++, but you are probably going to pay for it, since it's so new. If you are looking for a free alternative, you can learn opencv3 from the Python tutorials, then learn the c++ side from the documentation. Opencv 2.x is very translatable to opencv3.x, so I'm pretty sure learning opencv from older tutorials would still be a great option also.