OpenCV是非常有名的電腦視覺函式庫，提供了一大票的電腦視覺及影像處理相關函式，甚至連從攝影機擷取影像都能幫你解決。OpenCV還有個好處是它是跨平台的函式庫，在各大平台都能運作，所以我們接下來寫的程式除了在Mac上外，也能在Linux及Windows上運作。-OpenCV is a very well-known computer vision library, providing a large vote of computer vision and image processing-related functions, and even capture images from the camera have can help you solve. OpenCV also a benefit is that it is cross-platform library, will operate in all major platforms, so we then write the program in addition to Mac, but also be able to operate on Linux and Windows.