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11-02-2019 | Original Paper | Issue 1/2019

International Journal on Document Analysis and Recognition (IJDAR) 1/2019

Online signature verification based on string edit distance

Journal:
International Journal on Document Analysis and Recognition (IJDAR) > Issue 1/2019
Authors:
Kaspar Riesen, Roman Schmidt
Important notes
This work has been supported by the Commission for Technology and Innovation (CTI) project Nr. 18029.1 PFES-ES and the Bern Economic Development Agency.

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Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Abstract

Handwritten signatures are widely used and well-accepted biometrics for personal authentication. The accuracy of signature verification systems has significantly improved in the last decade, making it possible to rely on machines in particular cases or to support human experts. Yet, based on only few genuine references, signature verification is still a challenging task. The present paper provides a comprehensive comparison of two prominent string matching algorithms that can be readily used for signature verification. Moreover, it evaluates a recent cost model for string matching which turns out to be particularly well suited for the task of signature verification. On three benchmarking data sets, we show that this model outperforms the two standard models for string matching with statistical significance.

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