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| Offline Signature Verification Based on Optimal Rules of Fuzzy Modeling |
| TIAN Wei, QIAO YiZheng, MA ZhiQiang |
| School of Control Science and Engineering, Shandong University, Jinan 250061 |
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Abstract A new offline signature verification system based on fuzzy modeling of multiple rules is proposed. In this system, both static and pseudodynamic features are extracted to make up for the loss of dynamic information and their variation is described by fuzzy sets. Then the new weight coefficients by the membership functions are devised to reflect the contribution of different fuzzy rules to verification results. In addition, the optimal selection of multiple rules by the reliable estimate of Kfold crossvalidation is presented to reduce the computational complexity of the entire fuzzy system. Databases of Chinese and English signatures are applied to the experiments and the average error rates of 9.52% and 12.67% are obtained. Thus the effectiveness of the proposed system is validated.
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Received: 20 November 2006
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2008, Vol. 21 
