说明：  OpenCV是一个基于BSD许可（开源）发行的跨平台计算机视觉库，可以运行在Linux、Windows、Android和Mac OS操作系统上。它轻量级而且高效——由一系列 C 函数和少量 C++ 类构成，同时提供了Python、Ruby、MATLAB等语言的接口，实现了图像处理和计算机视觉方面的很多通用算法。
(OpenCV is a bsd-licensed (open source) cross-platform computer vision library that runs on Linux, Windows, Android, and Mac OS operating systems. It is lightweight and efficient -- a series of C functions and a small number of C++ classes, while providing interfaces in Python, Ruby, MATLAB and other languages, and implementing many common algorithms in image processing and computer vision.)