Score Selection Techniques for Fingerprint Multi-modal Biometric Authentication

  • Giorgio Giacinto
  • Fabio Roli
  • Roberto Tronci
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3617)

Abstract

Fingerprints are one of the most used biometrics for automatic personal authentication. Unfortunately, it is often difficult to design fingerprint matchers exhibiting the performances required in real applications. To meet the application requirements, fusion techniques based on multiple matching algorithms, multiple fingerprints, and multiple impressions of the same fingerprint, have been investigated. However, no previous work has investigated selection strategies for biometrics. In this paper, a score selection strategy for fingerprint multi-modal authentication is proposed. For each authentication task, only one score is dynamically selected so that the genuine and the impostor users’ scores distributions are mainly separated. Score selection is performed by first estimating the likelihood that the input pattern is an impostor or a genuine user. Then, the min score is selected in case of an impostor, while the max score is selected in case of a genuine user. Reported results show that the proposed selection strategy can provide better performances than those of commonly used fusion rules.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Giorgio Giacinto
    • 1
  • Fabio Roli
    • 1
  • Roberto Tronci
    • 1
  1. 1.Department of Electric and Electronic EngineeringUniversity of CagliariCagliariItaly

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