Demo success 需要5步

（1）opencv官网下载直达: https://sourceforge.net/projects/opencvlibrary/files/

此处建议下载opencv-3.4.16-vc14_vc15.exe（因4.5版本可能会报错，如下图所示）

（2）安装opencv，本人安装路径：G:\c++_machine_learning\

（3）配置电脑系统环境：G:\c++_machine_learning\opencv\build\x64\vc15\bin

（4）配置C++项目环境：创建一个c++项目，进入项目后，依次点击

project>>>project_name properties>>>VC++ Directories>>>Include Directories

project>>>project_name properties>>>VC++ Directories>>>Library Directories

project>>project_name properties>>Linker>>Input>>Additional Dependencies

（5）编写基础代码

#include "opencv2/opencv.hpp"
#include <iostream>

using namespace cv;
using namespace std;

int main()
{
	Mat srcImage = imread("G:\\lena.jpg");  // 注意路径的书写规范

	namedWindow("src");

	imshow("src", srcImage);

	cout << "demo success!" << endl;

	waitKey(0);

	destroyWindow("src");

	return 0;
}

  >>>测试结果 

   >>>如有疑惑，评论区一起探讨