Replacement Algorithms for Fingerprint Template Update

Authors:
Biagio Freni;Gian Luca Marcialis;Fabio Roli
Affiliations:
Department of Electrical and Electronic Engineering, University of Cagliari, Cagliari, (Italy) I-09123;Department of Electrical and Electronic Engineering, University of Cagliari, Cagliari, (Italy) I-09123;Department of Electrical and Electronic Engineering, University of Cagliari, Cagliari, (Italy) I-09123
Venue:
ICIAR '08 Proceedings of the 5th international conference on Image Analysis and Recognition
Year:
2008

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Abstract

Semi-supervised fingerprint template update is a relatively novel topic in which the problem of template representativeness with respect to unknown data has been pointed out. Current approaches to template update are based on insertion of a novel template into the gallery, and/or fusion of the template with an existing one. The automatic replacement of an existing template by a novel one is another possibility which has not yet been investigated. This paper is a first attempt to study the feasibility of using some template replacement algorithms in fingerprint verification systems. Replacement is performed online, which can be considered as a sort of "worst case" for this approach. Preliminary experiments are carried out on the four data sets of FVC2002 event.