We completed one of the hardest chapters in this book. Congratulations! We saw how to find and track a basic colored object and plunged into the depths of library APIs. Oh, and don't forget, we have completed our own object detector! The applications of Computer Vision methods vary. What we cannot accomplish with the simple color detection, we achieve with powerful feature detection and descriptor matching algorithms. Both libraries provide different functionalities to match the objects and some functions are not included in the libraries. But it should not stop you from using those excellent methods. To know how and, probably the more important part, when to use those algorithms are the most crucial things you need to know.
One of the most commonly seen objects in our world is a person's face. We interact with people everywhere. However, we did not see how to detect such objects in an application. The algorithms we covered in this chapter are not so useful for face detection, which...
