Face detection is the process of detecting a face in an image or video.
Face recognition is the process of detecting face in an image and then using algorithms to identify who the face belongs to. Face recognition is thus a form of person identification.
You first need to extract features from the image for training the machine learning classifier to identify faces in the image. Not only are these systems nonsubjective, but they are also automatic—no hand labeling of facial features is required. You simply extract features ...