ISSN : 1796-2048
Volume : 4    Issue : 3    Date : June 2009

Off-Line Persian Signature Identification and Verification Based on Image Registration and Fusion
Samaneh Ghandali and Mohsen Ebrahimi Moghaddam
Page(s): 137-144
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Signature verification and Identification has great importance for authentication purpose. Persian
signatures are different from other signature types because people usually do not use text in it and
they draw a shape as their signature, therefore, a different approach should be considered to
process such signatures. In this paper, a method for off-line Persian signature identification and
verification is proposed that is based on Image Registration, DWT (Discrete Wavelet Transform) and
Image Fusion. Training signatures of each person are registered to overcome shift and scale
problem. To extract features, at first, DWT is used to access details of signature; then several
registered instances of each person signatures are fused together to generate reference pattern of
person's signatures. In the classification phase, Euclidean distance between the test image and
each pattern is used in different sub-bands. Experimental results confirmed the effectiveness of the
proposed method. However, the proposed method has been tested on Persian signature database
but we believe it can be extended for other languages.

Index Terms
Signature verification and Identification, Image registration, Center Of gravity, Image fusion