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The utilization of a Taylor series-based transformation in fingerprint verification

Summary: The utilization of a Taylor series-based transformation
in fingerprint verification
Peter Meenen *, Ashkan Ashrafi, Reza Adhami
Integrated Biometrics Laboratory, Department of Electrical and Computer Engineering, The University of Alabama in Huntsville,
Engineering Building, Room 272, Huntsville, AL 35899, United States
Received 2 March 2005; received in revised form 4 March 2006
Available online 27 April 2006
Communicated by Prof. H. Kim
Dealing with non-linear distortion in fingerprint images is a major difficulty for automated fingerprint verification systems. While this
distortion can be a nuisance in minutiae matching systems, it is a major concern when matching smaller structures, such as points along
ridges and pore locations. In this paper we show that a simple transformation derived from a Taylor series expansion can be used in
conjunction with a set of corresponding minutia points to improve the correspondence of finer fingerprint details within a fingerprint
image. This is demonstrated by applying the transformation to a database of fingerprint images and examining the ridge and pore match
scores with and without the transformation. The results of our study show that this transform does provide a noticeable increase in
matching accuracy.
2006 Elsevier B.V. All rights reserved.
Keywords: Fingerprint; Non-linear distortion; Image transformation; Ridge matching; Pore matching; Fingerprint verification
1. Introduction
In recent years, the ability to positively identify an indi-


Source: Ashrafi, Ashkan - Department of Electrical and Computer Engineering, San Diego State University


Collections: Engineering; Computer Technologies and Information Sciences