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Asmit Malakannawar
Asmit Malakannawar

Posted on • Updated on

Installing OpenCV on Windows for C++

OpenCV is a library of programming functions mainly aimed at real-time computer vision. OpenCV was built to provide a common infrastructure for computer vision applications and to accelerate the use of machine perception in the commercial products. Being a BSD-licensed product, OpenCV makes it easy for businesses to utilize and modify the code.

Here are the simple installation guide to install OpenCV on Windows:

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  • Add bin folder to the Environment Variables path. For eg: C:\opencv\build\x64\vc15\bin

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  • Create a New Visual Studio project C++ console.

    Set the platform target to x64

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  • Add Directories by going to: Project->Properties->Configuration Properties-

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VC++ Directories
1. Add Build Directories: C:\opencv\build\include
2. Add Library Directories: C:\opencv\build\x64\vc15\lib

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Linker Input
1. Add to Linker->Input: opencv_world452d.lib (452 depends
on your OpenCV version)
d for debug, without d for release

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  • Click on your Project name on right side in Solutions Explorer, and right-click on it to Add a New Item.

Select C++ File and rename it as test.cpp.

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  • Finally, you can run this demo code in your visual studio IDE to see if it’s all working fine.
    #include <opencv2/imgcodecs.hpp>
    #include <opencv2/highgui.hpp>
    #include <opencv2/imgproc.hpp>
    #include <iostream>

    using namespace std;
    using namespace cv;

    void main() {

        VideoCapture cap(0);
        Mat img;

        while (true) {

            cap.read(img);
            imshow("Image", img);
            waitKey(1);
        } 
    } 
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  • Your Output Screen should display your live Web-Cam feed.

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And that’s all, you can now use OpenCV with ease. πŸ˜‰

For more install information, visit the OpenCV official guide.

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