Ubuntu16.04 C++ installation opencv tutorial

        I found two useful installation tutorials. The basic process is the same. One has a more detailed routine and it is more customary to create a build folder. The other one has pictures when configuring two text files, so it is not easy to make mistakes. You can refer to:

Official website download: Releases - OpenCV

Reference 1:

Linux ubuntu16.04 installation opencv4 tutorial (source code compilation)_Dontla's blog-CSDN blog_linux compilation opencv4

Reference 2:

Detailed tutorial on installing OPENCV in Ubuntu16.04 to avoid pitfalls_You say I listen blog-CSDN blog_Ubuntu16.04 install opencv

        Leave it here in case you forget to install it later.

        In addition, opencv2 and 3 conflict, but 4 and 23 do not conflict. Sometimes the dependencies may be different. My Ubuntu installed 3.4.11 and 4.6.0, but when I actually used it (rgbd code in ch5 of slambook2), an error was reported. In fact, it was because that code did not use opencv4.

        Both versions are installed. You can refer to this tutorial to select the version:

How to distinguish the use of opencv3 and opencv4 in the project without conflict_qq_43525260's blog-CSDN blog_The difference between opencv3 and 4