Writing OpenCV in VSCode

首先,需要安装MinGW编译器,支持编译C++代码.

安装MinGW编译器

1. 下载MinGW,下载链接为：
   https://nchc.dl.sourceforge.net/project/mingw-w64/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/8.1.0/threads-posix/sjlj/x86_64-8.1.0-release-posix-sjlj-rt_v6-rev0.7z

2. 将MinGWUnzip in a folder.例如：C:\software\mingw64
   

3. 配置环境变量.

   3.1 Right-click this computer on the desktop,选择属性.
   
   3.2 选择高级系统设置.
   
   3.3 打开环境变量.
   
   3.4 设置path,添加一条路径,为刚刚mingw的下bin文件夹的路径.C:\software\mingw64\bin.
   
   

4. 测试环境变量.win+r打开运行界面,输入cmd进入命令行,输入gcc -v,敲回车,查看gcc是否正常工作.
   

配置Vscode环境,支持编译C++

不用怎么配置,新建一个.cpp文件,用vscode打开,The lower right corner prompts whether to install the recommended onesC++扩展,It can be compiled after installationcpp文件了.
安装完成后,Found that the following has been addedVSCode扩展.

下载opencv3

进入官网,https://opencv.org/releases/,下载opencv3,选择Windows进行下载.
It can be installed in the specified directory.

下载Cmake

下载路径是：https://cmake.org/download/

Unzip it to a custom directory,我的路径为：C:\software\cmake\bin

点开cmake-gui.exe.
where is source code,选择C:\software\opencv3\opencv\sources
where is to build the binaries,It is a folder set by yourself,选择C:\software\opencv3\opencv\build\x64\mingw.

点击左下角的Configure,选择MinGW Makefiles,Specify native compiler.

Compiler,选择Mingw文件夹bin下的gcc.exe和g++.exe.路径是C:\software\mingw64\bin.

显示configure done.

Be sure to pay attention to this step,如果不执行这一步,later dependentdll会缺失.

在执行完后,把关于pythonare unchecked.勾选BUILD_opencv_world,WITH_OPENGL和BUILD_EXAMPLES,不勾选WITH_IPP、WITH_MSMF和ENABLE_PRECOMPILED_HEADERS（如果有的话）,CPU_DISPATCH选空.

第二次点击Configure.

再点击Generate,最后Generate Done,就完成了.

make

cmdGo to the folder you just set upC:\software\opencv3\opencv\build\x64\mingw,执行命令: minGW32-make -j 4.

make成功

继续执行minGW32-make install

配置OpenCV的环境变量.

配置Vscode环境,支持OpenCV3

任意创建一个文件夹,Put your own code.
The final file structure is as follows：

自己创建.vscode文件夹,自己创建c_cpp_properties.json、launch.json、tasks.json文件.自己创建Debugger文件夹.

c_cpp_properties.json

{
    
    "configurations": [
        {
    
            "name": "win",
            "includePath": [
                "${workspaceFolder}/**",
                "C:/software/opencv3/opencv/build/x64/mingw/include",
                "C:/software/opencv3/opencv/build/x64/mingw/install/include/opencv2",
                "C:/software/opencv3/opencv/build/x64/mingw/install/include"
            ],
            "defines": [],
            "compilerPath": "C:/software/mingw64/bin/g++.exe",
            "cStandard": "c11",
            "cppStandard": "c++17",
            "intelliSenseMode": "${default}"
        }
    ],
    "version": 4
}

launch.json

{
    

    "version": "0.2.0",
    "configurations": [
        {
    
            "name": "opencv debuge",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}//Debugger//${fileBasenameNoExtension}.exe",
            //上面这个Debugger是我自己定义的,Generated for ease of placementexe文件
            "args": [],
            "stopAtEntry": false, //这里如果为 false,It means that the debugging runs directly.（反之则停止）
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": true,//Whether to call externalcmd
            "MIMode": "gdb",
            "miDebuggerPath": "C:/software/mingw64/bin/gdb.exe",//自己进行设置
            "setupCommands": [
                {
    
                    "description": "为 gdb 启用整齐打印",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": false
                }
            ],
            "preLaunchTask": "opencv3.5.2"
        }
    ]
}

tasks.json

{
    
    "version": "2.0.0",
    "tasks": [
        {
    
            "type": "shell",
            "label": "opencv3.5.2",
            "command": "C:/software/mingw64/bin/g++.exe",
            "args": [
                "-g",
                "${file}",
                "-o",
                "${workspaceFolder}//Debugger//${fileBasenameNoExtension}.exe",
                //上面这个Debugger是我自己定义的,Generated for ease of placementexe文件
                "C:/software/opencv3/opencv/build/x64/mingw/bin/libopencv_world3416.dll",
                "-I",
                "C:/software/opencv3/opencv/build/x64/mingw/install/include",
                "-I",
                "C:/software/opencv3/opencv/build/x64/mingw/install/include/opencv2",
            ],
            "options": {
    
                "cwd": "C:/software/mingw64/bin"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
    
                "kind": "build",
                "isDefault": true
            }
        }
    ]
}

在C:\software\opencv3\opencv\build\x64\mingw\bin下找到libopencv_world3416.dll,复制到Debugger文件夹下.Note this suffix3416是OpenCV的版本号,Depends on the version you installed.

在C:\software\opencv3\opencv\build\x64\vc15\bin下找到opencv_ffmpeg3416_64.dll,复制到Debugger文件夹下.

生成test.cpp文件,输入测试代码.

#include <opencv2/opencv.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
using namespace cv;
int main()
{
    
    Mat img=imread("man.jpg");
    imshow("image",img);
    waitKey();
    return 0;
}

能正常运行即可.