| Presentation | 2003/7/11 On-Line Signature Verification Method Based on Discrete Wavelet Transform Isao NAKANISHI, Naoto NISHIGUCHI, Yoshio ITOH, Yutaka FUKUI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | On-line signature verification method based on the Discrete Wavelet Transform (DWT) is presented. Time-varying pen-position signal of the on-line signature is decomposed into sub-band signals by using the DWT. Individual features are extracted as high frequency components in the sub-band decomposition; therefore, this makes the difference between the genuine signature and its forgery more obviously. However, there is fluctuation in the number of strokes even in the genuine signature. In this paper, we introduce the Dynamic Programming (DP) matching to suppress such fluctuation in the number of strokes. Also, we propose a verification method utilizing the adaptive algorithm. The verification is achieved by whether the adaptive weight converges on 1 or not since the error between the input and the desire signal is decreased when the input is of the genuine signature. However, the convergence characteristic depends on the step size parameter of the adaptive algorithm. Therefore, the normalized step size parameter by the signal power of the input signature is introduced to guarantee the convergence. The results of verification show that the equal error rate of about 11%, that is, the verification rate of 90% is accomplished even when a writer is not permitted to refer his/her own signature and the forgery can trace the genuine signature. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | On-Line Signature Verification / DWT / DP Matching / Adaptive Signal Processing / Normalized Step Size Algorithm |
| Paper # | ISEC2003-34 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2003/7/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On-Line Signature Verification Method Based on Discrete Wavelet Transform |
| Sub Title (in English) | |
| Keyword(1) | On-Line Signature Verification |
| Keyword(2) | DWT |
| Keyword(3) | DP Matching |
| Keyword(4) | Adaptive Signal Processing |
| Keyword(5) | Normalized Step Size Algorithm |
| 1st Author's Name | Isao NAKANISHI |
| 1st Author's Affiliation | Faculty of Education and Regional Sciences, Tottori University() |
| 2nd Author's Name | Naoto NISHIGUCHI |
| 2nd Author's Affiliation | Faculty of Engineering, Tottori University |
| 3rd Author's Name | Yoshio ITOH |
| 3rd Author's Affiliation | Faculty of Engineering, Tottori University |
| 4th Author's Name | Yutaka FUKUI |
| 4th Author's Affiliation | Faculty of Engineering, Tottori University |
| Date | 2003/7/11 |
| Paper # | ISEC2003-34 |
| Volume (vol) | vol.103 |
| Number (no) | 196 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |