Facial recognition system
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A facial recognition system is a technology potentially capable of matching a human face from a digital image or a video frame against a database of faces. Such a system is typically employed to authenticate users through ID verification services, and works by pinpointing and measuring facial features from a given image.
Facial recognition software at a US airport
Automatic ticket gate with face recognition system in Osaka Metro Morinomiya Station
The Viola–Jones algorithm for face detection uses Haar-like features to locate faces in an image. Here a Haar feature that looks similar to the bridge of the nose is applied onto the face.
Automatic face detection with OpenCV
Biometrics
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Biometrics are body measurements and calculations related to human characteristics. Biometric authentication is used in computer science as a form of identification and access control. It is also used to identify individuals in groups that are under surveillance.
Biometric Island examining facial image 2D and 3D, voice timbre, and verifying handwritten signature