To install the C++ extensions, open a system terminal and run the following command

code --install-extension ms-vscode.cpptools-extension-pack ms-vscode.makefile-tools twxs.cmakede

Then from the terminal go to the root of the code and run code .

In case VS Code does not recognize the include <opencv2....>:

• download the following archive
• extract it at the root of the code
• restart VS Code.