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　  OpenCV is a computer vision library written using highly optimized C/C++ code. It makes use of multiprocessing in the background. It has a collection of a large number of algorithms tested and verifiend by the developers. The best thing about this is it's FREE under the BSD license.　（https://opencv.org/about.html）

　　libopencv is only a metapackage. These packages do not contain actual software, they simply depend on other packages to be installed. So libopencv is a metapackage which simply references one or more related packages which are loosely grouped together. It is dedicated for installing OpenCV in Ubuntu and Debian OS. （https://packages.debian.org/sid/libopencv-dev）

　   Python-OpenCV is the OpenCV library available as a wrapper with bindings for python. The link also shows how to install OpenCV in Ubuntu OS.（ https://pypi.org/project/opencv-python/   https://opencv-python-tutroals.readthedocs.io/en/latest/ ）

详情请参考：https://*.com/questions/45450706/whats-the-difference-with-opencv-python-opencv-and-libopencv#