Off-Line Persian Signature Identification and Verification Based on Image Registration and Fusion

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.

[1]  Flávio Bortolozzi,et al.  Off-line signature verification using HMM for random, simple and skilled forgeries , 2001, Proceedings of Sixth International Conference on Document Analysis and Recognition.

[2]  Jaya Sil,et al.  Handwritten Character Recognition Systems Using Image-Fusion and Fuzzy Logic , 2005, PReMI.

[3]  Piotr Porwik,et al.  The Compact Three Stages Method of the Signature Recognition , 2007, 6th International Conference on Computer Information Systems and Industrial Management Applications (CISIM'07).

[4]  Sargur N. Srihari,et al.  Learning strategies and classification methods for off-line signature verification , 2004, Ninth International Workshop on Frontiers in Handwriting Recognition.

[5]  R. Larkins,et al.  Adaptive Feature Thresholding for off-line signature verification , 2008, 2008 23rd International Conference Image and Vision Computing New Zealand.

[6]  Wei Tian,et al.  A New Scheme for Off-line Signature Verification Using DWT and Fuzzy Net , 2007, Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing (SNPD 2007).

[7]  Gonzalo Pajares Martinsanz,et al.  A wavelet-based image fusion tutorial , 2004 .

[8]  B. Kovari,et al.  Off-Line Signature Verification Based on Feature Matching , 2007, 2007 11th International Conference on Intelligent Engineering Systems.

[9]  Yu Qiao,et al.  Offline Signature Verification Using Online Handwriting Registration , 2007 .

[10]  Jingui Pan,et al.  Off-line signature verification using geometric features specific to Chinese handwriting , 2002, ITI 2002. Proceedings of the 24th International Conference on Information Technology Interfaces (IEEE Cat. No.02EX534).

[11]  K. Pavithra,et al.  Cross-validation for graph matching based Offline Signature Verification , 2008, 2008 Annual IEEE India Conference.

[12]  Rick S. Blum,et al.  Multi-sensor image fusion and its applications , 2005 .

[13]  S. Ghandali,et al.  A Method for Off-line Persian Signature Identification and Verification Using DWT and Image Fusion , 2008, 2008 IEEE International Symposium on Signal Processing and Information Technology.

[14]  G. G. Rajput,et al.  Recognition of Isolated Handwritten Kannada Numerals Based on Image Fusion Method , 2007, PReMI.

[15]  Vallipuram Muthukkumarasamy,et al.  Off-line Signature Verification using the Enhanced Modified Direction Feature and Neural-based Classification , 2006, The 2006 IEEE International Joint Conference on Neural Network Proceedings.

[16]  Sharifah Mumtazah Syed Ahmad,et al.  Analysis of the Effect of Different Features' Performance on Hidden Markov Modeling Based Online and Offline Signature Verification Systems , 2008, 2008 Digital Image Computing: Techniques and Applications.

[17]  Siyuan Chen,et al.  Machine Learning for Signature Verification , 2006, ICVGIP.

[18]  Sanjay Kumar Jena,et al.  Improved Offline Signature Verification Scheme Using Feature Point Extraction Method , 2008 .

[19]  Miguel Angel Ferrer-Ballester,et al.  Offline geometric parameters for automatic signature verification using fixed-point arithmetic , 2005, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[20]  Abdenaim El Yacoubi,et al.  An off-line signature verification system using hidden Markov model and cross-validation , 2000, Proceedings 13th Brazilian Symposium on Computer Graphics and Image Processing (Cat. No.PR00878).

[21]  Hong-Yuan Mark Liao,et al.  Wavelet-Based Off-Line Handwritten Signature Verification , 1999, Comput. Vis. Image Underst..