Off-line signature verification using DTW

In this paper, we propose a signature verification system based on Dynamic Time Warping (DTW). The method works by extracting the vertical projection feature from signature images and by comparing reference and probe feature templates using elastic matching. Modifications are made to the basic DTW a...

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Bibliographic Details
Published inPattern recognition letters Vol. 28; no. 12; pp. 1407 - 1414
Main Authors Piyush Shanker, A., Rajagopalan, A.N.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.09.2007
Elsevier
Subjects
Applied sciences
Cryptography
Dynamic time warping
Exact sciences and technology
Information, signal and communications theory
Pattern recognition
Signal and communications theory
Signal processing
Signature verification
Stability of signatures
Telecommunications and information theory
Signature verification
Dynamic time warping
Stability of signatures
Warping
Error rate
Pattern recognition
Dynamical system
Algorithm
Handwriting recognition
Authentication
Database
Test method
Pattern matching
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Summary:In this paper, we propose a signature verification system based on Dynamic Time Warping (DTW). The method works by extracting the vertical projection feature from signature images and by comparing reference and probe feature templates using elastic matching. Modifications are made to the basic DTW algorithm to account for the stability of the various components of a signature. The basic DTW and the modified DTW methods are tested on a signature database of 100 people. The modified DTW algorithm, which incorporates stability, has an equal-error-rate of only 2% in comparison to 29% for the basic DTW method.
ISSN:0167-8655
1872-7344
DOI:10.1016/j.patrec.2007.02.016