Building Computer Vision Projects with OpenCV 4 and C++

Finishing touches—making a nice and interactive GUI

While the code given so far in this chapter is sufficient for a whole face recognition system, there still needs to be a way to put the data into the system and a way to use it. Many face recognition systems for research will choose the ideal input to be text files, listing where the static image files are stored on the computer, as well as other important data, such as the true name or identity of the person, and perhaps true pixel coordinates of regions of the face (such as the ground truth of where the face and eye centers actually are). This would either be collected manually or by another face recognition system.

The ideal output would then be a text file comparing the recognition results ...