Dynamic Score Selection for Fusion of Multiple Biometric Matchers

A biometric system for user authentication produces a matching score representing the degree of similarity of the input biometry with the set of templates for that user. If the score is greater than a prefixed threshold, then the user is accepted, otherwise the user is rejected. Typically the performance are evaluated in terms of the Receiver Operating Characteristic (ROC) curve, and the Equal Error Rate (EER). In order to increase the reliability of authentication through biometrics, the combination of different biometric systems is currently investigated by researchers. While a number of “fusion” algorithms have been proposed in the literature, in this paper we propose a theoretical analysis of a novel approach based on the “dynamic selection” of matching scores. Such a selector aims at choosing, for each user to be authenticated, just one of the scores produced by the different biometric systems available. We show that the “dynamic selection” of matching scores can pro...

• Type: Conference
• Year: 2007
• Where: ICIAP
• Authors: Roberto Tronci, Giorgio Giacinto, Fabio Roli
• Keywords: Dynamic Selection, ICIAP 2007, Image Processing, Receiver Operating Characteristic, User