How Face Recognition Works

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And possible uses (Biometrics)
How it works:
THe first bit in the process is recoginising a face a in a photo and seperating it from a background. The program recognises the shape of a face, and the increases lighting and then sets to work on it

Face recognition works by looking at the distances apart points on the face are. Key points include:

  • Distance between eyes
  • Width of nose
  • Depth of eye sockets
  • Cheekbones
  • Jaw line
    The simplest way of finding points is by the program having a basic idea of where to expect features, then by looking for a certain colour (eg. red for teh mouth) the system finds the point.
    The data from these create face prints. Faceprints sets of data used to represent a face in binary numerics.

    The more techincal explanation:
    Facial recognition works by capturing an image of your face – known as a ‘faceprint’. These are unique numerical maps of your face made up of distinguishing features on your face known as nodal points. There are around 80 nodal points, including: jaw line, chin, distance between eyes and width of nose.