Question

I have asked a similar question on How to link and use OpenCV headers?, but no luck so far. So I decided to ask a new, more specific question.

What OpenCV-specific folders or files do I need to include in my C++ project — and how I might include them? I have installed OpenCV 2.4.0 on my C:\ drive. I’ve looked at the tutorials in openCV’s website, but they are for an older version (OpenCV 2.1) and refer to non-existent files like objdetect.hpp (for example).

Answer 1

See http://docs.opencv.org/doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.html#windows-visual-studio-how-to

Add these to your stdafx.h

#include <opencv2/core/core.hpp>        // cv::Mat etc, always need this
#include <opencv2/imgproc/imgproc.hpp>  // all the image processing functions
#include <opencv2/highgui/highgui.hpp>  // Display and file I/O

Assuming you have set OPENCV_DIR to the place you put opencv eg. OPENCV_DIR=c:\opencv2.4\opencv

Then set the VC++ directories in project settings to
Include add $(OPENCV_DIR)\include and to Library add $(OPENCV_DIR)\lib

Then in the “linker Input” add opencv_core240.lib (opencv_core240D.lib for debug) opencv_imgproc240.lib and opencv_highgui240.lib etc