What is the principle of facial recognition?

Face recognition is a biometric technology based on face information. When recognizing a face, first judge 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 for face matching and recognition. What is the principle of face recognition?

1. 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 for storage.

2. Face detection is to judge whether there are faces from dynamic scenes or complex backgrounds, and to separate these faces. Image preprocessing is mainly to remove irrelevant information in the image and reduce the illumination of the external environment as much as possible.

3. Or the image is disturbed by the imaging system, so that the features of the image are clearly displayed. Finally, feature information is extracted from the image to complete face matching and recognition.

So much for the introduction of what facial recognition is.