首先上一下参考文献：

１ visual studio code(vscode) c++ 编译opencv并运行调试

visual studio code(vscode) c++ 编译opencv并运行调试_zoeou的博客-CSDN博客

2【工程配置】ubuntu下基于vscode进行opencv调试_小Teemo历险记-CSDN博客

3 史上最全vscode配置使用教程 - 知乎

4 ubuntu16.04+VS Code+OpenCV配置编译运行程序 - 明楼 - 博客园

5 Ubuntu 18.04系统下的环境配置vscode&&opencv&&c++ - 兵临城下的匹夫 - 博客园

其实我很想参考官方如何配置的，但一时没看到．

我在参看上述博客，配置opencv遇到了点问题，大致是这样的：vscode下需要配置的文件有三个，其中一个c_cpp_properties.json配置中是这样的：

{
    "configurations": [
        {
            "name": "Linux",
            "includePath": [
                "${workspaceFolder}/**",
               
                "/usr/local/include", //请确保你的opencv opencv2头文件夹安装在这个目录
                "/usr/local/include/opencv", 
                "/usr/local/include/opencv2", 
                "/usr/include"
            ],
            "defines": [],
            "compilerPath": "/usr/bin/gcc",
            "cStandard": "c11",
            "cppStandard": "c++14",
            "intelliSenseMode": "clang-x64"
        }
    ],
    "version": 4
}

这个配置是网络上常用配置，但是opencv4的include目录结构是这样的：

所以你安装的是opencv4，那末你的c_cpp_properties.json配置应该是这样的：

{
    "configurations": [
        {
            "name": "Linux",
            "includePath": [
                "${workspaceFolder}/**",
               
                "/usr/local/include", //请确保你的opencv opencv2头文件夹安装在这个目录
                "/usr/local/include/opencv", 
                "/usr/local/include/opencv4/opencv2", 
                "/usr/include"
            ],
            "defines": [],
            "compilerPath": "/usr/bin/gcc",
            "cStandard": "c11",
            "cppStandard": "c++14",
            "intelliSenseMode": "clang-x64"
        }
    ],
    "version": 4
}