Opencv installation configuration test

Installed in front of pcl and qt, as well as qt Medium vtk, Configure here opencv4.3

take cv Copied to the D Under the plate .

After installation , Add environment variables ,[ Computer ]-> Right click [ attribute ]->[ Advanced system setup ]->[ environment variable ]->[ System environment variable ]-> edit [Path], add to “D:\opencv320\opencv\build\x64\vc14\bin” Note that it is used with other variables “;” separate ,

（ Because you need to restart after configuring environment variables , So this demo will ignore this step , Other methods will be adopted later ）

#include<iostream>
 
#include<opencv2/opencv.hpp>
 
int main()
 
{
    
 
    cv::Mat img = cv::imread("D:\\test.jpg");// Load a picture 
 
    cv::imshow(" The test image ", img);// display picture   The window name is “ The test image ”
 
    cv::waitKey(0);// Wait for any key （ Pause ）
 
    return 0;
 
}

Restart the computer . Wait for the environment variable to be set .
Then reopen the project , compile , function .