dlib is a general-purpose, cross-platform software library written in the programming language C++. We are going to learn dlib and understand how to find and use human facial features from images and videos. According to their own website, dlib.net, dlib is a modern C++ tool containing machine learning algorithms and tools for creating complex software in C++ to solve real-world problems. It is a C++ toolkit and, just like OpenCV, it contains a very nice set of Python bindings that will work very well for our applications.

dlib is a very rich library and contains a whole lot of algorithms and features, which are very well documented on their website. This makes it easy to learn from, and it has a whole lot of examples similar to what we're going to do in this chapter and for your customized projects. It is recommended that you check their website if you&apos...