Storing and comparing biometric information

Posted by Chathuranga Chandrasekara on Stack Overflow See other posts from Stack Overflow or by Chathuranga Chandrasekara
Published on 2009-09-07T09:22:58Z Indexed on 2010/04/06 7:33 UTC
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biometrics

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face-recognition

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fingerprint

I am not sure whether this is the best place to post this. But this is strongly related with programming so decided to put this here.

In general we use biometrics in computer applications say for authentication. Lets get 2 examples finger prints and facial recognition.

In those cases how we keep the information for comparison. As an example we can't keep a image and process it every time. So what are the methodologies we use to store/determine the similarity in such cases? Are there any special algorithms that designed for that purposes.? (Ex : To return a approximately equal value for a finger print of a certain person every time)

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