Building Computer Vision Projects with OpenCV 4 and C++

Training the face recognition system from collected faces

After you have collected enough faces for each person to recognize, you must train the system to learn the data using a machine learning algorithm suited for face recognition. There are many different face recognition algorithms in the literature, the simplest of which are Eigenfaces and artificial neural networks. Eigenfaces tends to work better than ANNs, and despite its simplicity, it tends to work almost as well as many more complex face recognition algorithms, so it has become very popular as the basic face recognition algorithm for beginners, as well as for new algorithms to be compared to.

Any reader who wishes to work further on face recognition is recommended to read the theory ...