Template Co-update in Multimodal Biometric Systems

  • Fabio Roli
  • Luca Didaci
  • Gian Luca Marcialis
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4642)


Performances of biometric recognition systems can degrade quickly when the input biometric traits exhibit substantial variations compared to the templates collected during the enrolment stage of users. This issue can be addressed using template update methods. In this paper, a novel template update method based on the concept of biometric co-training is presented. In multimodal biometric systems, this method allows co-updating the template galleries of different biometrics, realizing a co-training process of biometric experts which allows updating templates more quickly and effectively. Reported results provide a first experimental evidence of the effectiveness of the proposed template update method.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Fabio Roli
    • 1
  • Luca Didaci
    • 2
  • Gian Luca Marcialis
    • 1
  1. 1.University of Cagliari – Department of Electrical and Electronic Engineering, Piazza d’Armi – 09123 CagliariItaly)
  2. 2.University of Cagliari – Department of Pedagogical and Philosophical Sciences, Via Is Mirrionis, 1 - 09123 CagliariItaly)

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