Apparatus and method for authenticating a user by employing...

Image analysis – Applications – Personnel identification

Reexamination Certificate

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C235S380000, C713S186000, C713S152000

Reexamination Certificate

active

07079670

ABSTRACT:
In an apparatus for authenticating a user by employing feature points of a fingerprint image of the user, a fingerprint image input circuit scans a fingerprint of a user to be registered to provide a first fingerprint image and a fingerprint of a user to be authenticated to provide a second fingerprint image. A host provides registered feature points data corresponding to the first fingerprint image and target feature points data corresponding to the second fingerprint image. A security token circuit estimates a position difference and a direction difference between pairs of a registered feature point and a target feature point and corrects the two feature points based on the position difference and the direction difference to provide authentication result data.

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