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Fingerprint Matching Using Distortion Tolerant Filters



Craig I. Watson, D P. Casasent


The purpose of this paper is to discuss the use of distortion tolerant filters to improve the performance of fingerprint correlation matching. Previous work has shown that correlation matching of fingerprints is susceptible to larger false alarm rates than more traditional minutiae based methods. The elasticity of the finger-print creates enough distortion to produce poor results in correlation matching, be-cause the correlation matcher uses the global ridge structure of the fingerprint image. A way to improve correlation matcher performance is to create filters that combine several elastic distorted versions of the fingerprint images. In this work three different distortion tolerant filters are tested: average, synthetic discriminate function (SDF), and minimum average noise and correlation plane energy (MINACE).
Advances in Fingerprint Recognition
Publisher Info
none, none, MD


correlation matching, distortion tolerant filters, fingerprint matching, high-pass filtering, identification, verification


Watson, C. and Casasent, D. (2003), Fingerprint Matching Using Distortion Tolerant Filters, Advances in Fingerprint Recognition, none, none, MD (Accessed May 21, 2024)


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Created February 13, 2003, Updated February 19, 2017