Getting Started: OpenCV 2.4 and MinGW on Windows 7 with a Sample Code
Installing OpenCV 2.4
- Download and extract the OpenCV 2.4.3 package from Sourceforge.net.
- Install it in a directory (e.g., C:).
- Add the OpenCV DLL directory (C:opencvbuildx86mingwbin) to your system PATH.
Installing MinGW
- Download the MinGW installer from Sourceforge.net and follow the wizard.
- Select the directory to install (e.g., C:MinGW).
- Install the C Compiler and C Compiler.
- Add the MinGW bin directory (C:MinGWbin) to your system PATH.
Writing a Sample Code
-
Create a new C file (e.g., loadimg.cpp) with the following code:
#include "opencv2/highgui/highgui.hpp" #include <iostream> using namespace cv; using namespace std; int main(int argc, char** argv) { Mat im = imread(argc == 2 ? argv[1] : "lena.jpg", 1); if (im.empty()) { cout </iostream>
-
Compile the code:
g++ -I"C:\opencv\build\include" -L"C:\opencv\build\x86\mingw\lib" loadimg.cpp -lopencv_core243 -lopencv_highgui243 -o loadimg
- Run the compiled program (loadimg.exe) to load and display an image.
Next Steps
- Explore the sample codes in the OpenCV samples directory (C:opencvsamplescpp).
- Develop your own OpenCV applications.
The above is the detailed content of How to Set Up OpenCV 2.4 and MinGW on Windows 7 for Image Processing?. For more information, please follow other related articles on the PHP Chinese website!

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