An Identity Authentication System Using Fingerprints
Fingerprint veriﬁcation is an important biometric technique for personal identiﬁcation. In this paper, we describe the design and implementation of a prototype automatic identity-authentication system that uses ﬁngerprints to authenticate the identity of an individual. We have developed an improved minutiae-extraction algorithm that is faster and more accurate than our earlier algorithm . An alignment-based minutiae-matching algorithm has been proposed. This algorithm is capable of ﬁnding the correspondences between input minutiae and the stored template without resorting to exhaustive search and has the ability to compensate adaptively for the nonlinear deformations and inexact transformations between an input and a template. To establish an objective assessment of our system, both the Michigan State University and the National Institute of Standards and Technology NIST 9 ﬁngerprint data bases have been used to estimate the performance numbers. The experimental results reveal that our system can achieve a good performance on these data bases. We also have demonstrated that our system satisﬁes the response-time requirement.
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