Visual Studio creates cmake project - opencv environment configuration

Foreword: Hey, I have not used VS to create a cmake project for a long time, and the configuration of opencv is rusty, so record it

premise:

First make sure you have downloaded opencv, my opencv version is 4.5.5, and unzip it to a folder you can remember, as shown in the figure

The directory I decompressed opencv is: E:\opencv, in the opencv folder of the E drive

first step:

After the prerequisites are ready, you need to configure the environment variables. My Computer -> Right-click -> Properties -> Advanced System Settings -> Environment Variables -> System Variables -> Path

Create a new one in the path, configure the environment of opencv (find the decompressed path):

E:\opencv\opencv\build\bin

E:\opencv\opencv\build\x64\vc15\bin

I am vs2022, so I choose vc15, different versions, choose different vc, see the table below:

VS version	VC version
VS2003	VC7
VS2005	VC8
VS2008	VC9
VS2010	VC10
VS2012	VC11
VS2013	VC12
VS2015	VC14
VS2017	VC15

 After the environment variables are configured, the next thing to do is to create a cmake project with vs and modify the content in cmaklist.txt.

In cmakelist.txt, fill in the following content:

# CMakeList.txt: CMakeProject1 的 CMake 项目，在此处包括源代码并定义
# 项目特定的逻辑。
#
cmake_minimum_required (VERSION 3.8)
add_executable (CMakeProject1 "CMakeProject1.cpp" "CMakeProject1.h")
# 将源代码添加到此项目的可执行文件。
set(OpenCV_DIR E:/opencv/opencv/build)
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
link_directories(${OpenCV_LIBRARY_DIRS})
target_link_libraries(CMakeProject1 ${OpenCV_LIBS})
# TODO: 如有需要，请添加测试并安装目标。

Where CMakeProject1 is the name of the created project (default, I did not change the name)

At this point, you can call opencv in vs.

have a test:

#include <opencv2/opencv.hpp>
#include <iostream>
using namespace std;
using namespace cv;
int main() 
{
	cv::Mat img = cv::imread("E:/cmake_project/CMakeProject1/CMakeProject1/imgs/1305031102.175304.png");
	cv::namedWindow("test");
	cv::imshow("test", img);
	cv::waitKey(0);
}

 Finish! ! !