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
- 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.