Multi-Matcher On-Line Signature Verification System in DWT Domain

  • Authors:

  • Isao Nakanishi;Hiroyuki Sakamoto;Naoto Nishiguchi;Yoshio Itoh;Yutaka Fukui

  • Affiliations:

  • The author is with the Faculty of Regional Sciences, Tottori University, Tottori-shi, 680-8551 Japan. E-mail: isao@rstu.jp,;The authors are with the Faculty of Engineering, Tottori University, Tottori-shi, 680-8552 Japan.,;The authors are with the Faculty of Engineering, Tottori University, Tottori-shi, 680-8552 Japan.,;The authors are with the Faculty of Engineering, Tottori University, Tottori-shi, 680-8552 Japan.,;The authors are with the Faculty of Engineering, Tottori University, Tottori-shi, 680-8552 Japan.,

  • Venue:
  • IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
  • Year:
  • 2006

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Abstract

This paper presents a multi-matcher on-line signature verification system which fuses the verification scores in pen-position parameter and pen-movement angle one at total decision. Features of pen-position and pen-movement angle are extracted by the sub-band decomposition using the Discrete Wavelet Transform (DWT). In the pen-position, high frequency sub-band signals are considered as individual features to enhance the difference between a genuine signature and its forgery. On the other hand, low frequency sub-band signals are utilized as features for suppressing the intra-class variation in the pen-movement angle. Verification is achieved by the adaptive signal processing using the extracted features. Verification scores in the pen-position and the pen-movement angle are integrated by using a weighted sum rule to make total decision. Experimental results show that the fusion of pen-position and pen-movement angle can improve verification performance.