Distance measures for gabor jets-based face authentication: a comparative evaluation

Authors:
Daniel González-Jiménez;Manuele Bicego;J. W. H. Tangelder;B. A. M Schouten;Onkar Ambekar;José Luis Alba-Castro;Enrico Grosso;Massimo Tistarelli
Affiliations:
TSC Department, University of Vigo, Vigo, Spain;DEIR, University of Sassari, Sassari, Italy;CWI, Amsterdam, The Netherlands;CWI, Amsterdam, The Netherlands;CWI, Amsterdam, The Netherlands;TSC Department, University of Vigo, Vigo, Spain;DEIR, University of Sassari, Sassari, Italy;DAP, University of Sassari, Alghero, Italy
Venue:
ICB'07 Proceedings of the 2007 international conference on Advances in Biometrics
Year:
2007

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Abstract

Local Gabor features (jets) have been widely used in face recognition systems. Once the sets of jets have been extracted from the two faces to be compared, a proper measure of similarity (or distance) between corresponding features should be chosen. For instance, in the well known Elastic Bunch Graph Matching (EBGM) approach and other Gabor-based face recognition systems, the cosine distance was used as a measure. In this paper, we provide an empirical evaluation of seven distance measures for comparison, using a recently introduced face recognition system, based on Shape Driven Gabor Jets (SDGJ). Moreover we evaluate different normalization factors that are used to pre-process the jets. Experimental results on the BANCA database suggest that the concrete type of normalization applied to jets is a critical factor, and that some combinations of normalization + distance achieve better performance than the classical cosine measure for jet comparison.