Fingerprint matching via spatial correlation with regional coherence

Al Ranalli

doi:10.1117/12.265386

28 January 1997 Fingerprint matching via spatial correlation with regional coherence

Al Ranalli

Proceedings Volume 2932, Human Detection and Positive Identification: Methods and Technologies; (1997) https://doi.org/10.1117/12.265386
Event: Enabling Technologies for Law Enforcement and Security, 1996, Boston, MA, United States

Abstract

A non-minutiae based technique for fingerprint matching is presented, based upon spatial correlation of fingerprint grayscale images. Normally, such techniques suffer from plastic distortion of the fingerprint ridges, which varies irreproducibly from one scan to another. This distortion can be seen as a process which reduces the degree of global spatial coherence of the fingerprint images. In the proposed approach, this limitation is accommodated by correlating small, windowed regions of a test image with the entire reference image. A score can then be ascertained, based on the partial correlations of these regions. The technique lends itself naturally to implementation by optical means.

Citation Download Citation

Al Ranalli "Fingerprint matching via spatial correlation with regional coherence", Proc. SPIE 2932, Human Detection and Positive Identification: Methods and Technologies, (28 January 1997); https://doi.org/10.1117/12.265386

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