The human face is as natural as other biological features of the human body (fingerprint, iris, etc.). Its uniqueness and good characteristics that are not easily reproduced provide the necessary premise for identity identification, and face recognition compared with other types of biometrics. Has the following characteristics:
Non-mandatory: the user does not need to cooperate with the face collection device, and the face image can be obtained almost in an unconscious state. Such sampling method is not “mandatory”;
Non-contact: Users can obtain facial images without direct contact with the device;
Concurrency: In the actual application scenario, multiple face sorting, judgment and recognition can be performed;
In addition, it also meets the visual characteristics: the characteristics of “seeing people”, as well as the features of simple operation, intuitive results and good concealment.