Most of the OpenCV tutorials I've watching have only one include statement #include opencv2/opencv.hpp
But I'm not sure if this is the best way to do things or just the easy way, it seems like this include statement just includes everything whether I need it or not. Would it speed up my program if I only added the header files that I needed? If so, how can I find out what header files the function in my program are in? The OpenCV documentation doesn't seem to give that information.
Thank You