创建CMakeLists.txt

set(OpenCV_DIR "D:/env/opencv-4.6.0-vc14_vc15/build")
cmake_minimum_required(VERSION 2.8)
project( DisplayImage )
find_package( OpenCV REQUIRED )
include_directories(${OpenCV_INCLUDE_DIRS})
link_directories(${OpenCV_LIBRARY_DIRS})
add_executable (DisplayImage main.cpp)
target_link_libraries( DisplayImage ${OpenCV_LIBS} )

第二步：创建C++文件 main.cpp

#include<opencv2/opencv.hpp>
using namespace cv;
int main()
{

    Mat srcImage=imread("d:/2.jpg");
    imshow("Origin",srcImage);
    waitKey(0);
    return 0;
}

创建build目录

并在build目录打开终端,

#运行
cmake ..

编译

cmake --build .

在build目录下有这个文件

build\Debug\DisplayImage.exe

双击即可运行