File
Authors
Nakatani, Shingo
Koike, Shota
Keywords
biometrics
on-line signature verification
DWT
DP matching
threshold equalizing
NDC
Technology. Engineering
Abstract
In this paper, we introduce simply partitioned DP (dynamic programming) matching and threshold equalizing into the verification process in DWT (discrete wavelet transform) domain on-line signature verification in order to improve the performance. The simply partitioned DP matching divides both data series (verification and template data) into several partitions and calculate sub DP distance every partition. Even if mismatched pairs are caused in each partition, they are initialized at the beginning of the next partition and matching errors could be reduced. The threshold equalizing suppresses the variation range of optimal thresholds for all users (signatures), so that it prevents the verification performance from degrading by common use of single threshold for all users. In particular, we propose two equalizing methods in which the relation between the number of sampled data and optimal thresholds in signatures are approximated and adjusted by linear and nonlinear functions. In verification experiments using the signature database: SVC2004, it is confirmed that the proposed methods are effective for improving the performance.
Publisher
IEEE
Content Type
Conference Paper
Link
https://ieeexplore.ieee.org/document/5693507/
ISSN・ISBN
978-1-4244-8353-2
Journal Title
Proceedings of 12th International Conference on Frontiers in Handwriting Recognition (ICFHR2010)
Current Journal Title
Proceedings of 12th International Conference on Frontiers in Handwriting Recognition (ICFHR2010)
Start Page
101
End Page
106
Published Date
2010
DOI
Text Version
Author
Rights
© © 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Citation
Proceedings of 12th International Conference on Frontiers in Handwriting Recognition (ICFHR2010). 2010, 101-106
Department
Faculty of Engineering/Graduate School of Engineering
Language
English