Principle and processing flow of face recognition

Face recognition is a biometric technology based on face information. When recognizing a face, it is first judged whether there is a face. If there is a face, the size and position of the face and the information of various organs of the face are further given. According to this information, the features and identities of people are further extracted, and the existing faces are matched and recognized.

Face recognition includes face acquisition, face detection, image preprocessing, feature information extraction, face matching and recognition. Face detection refers to collecting face files with a camera or forming face files with photos, and then generating face codes and storing them.