Off-Line Signature Recognition
There exist a number of biometrics methods today e.g. Signatures, Fingerprints, Iris etc. There is considerable interest in authentication based on handwritten signature verification system as it is the cheapest way to authenticate the person. Fingerprints and Iris verification require the installation of costly equipments and hence can not be used at day to day places like Banks etc. As because Forensic experts can not be employed at every place, there has been considerable effort towards developing algorithms that could verify and authenticate the individual’s identity . Many times the signatures are not even readable by human beings. Therefore a signature is treated as an image carrying a certain pattern of pixels that pertains to a specific individual. Signature Verification Problem therefore is concerned with determining whether a particular signature truly belongs to a person or not.
Signatures are a special case of handwriting in which special characters and flourishes are viable. Signature Verification is a difficult pattern recognition problem as because no two genuine signatures of a person are precisely the same. Its difficulty also stems from the fact that skilled forgeries follow the genuine pattern unlike fingerprints or irises where fingerprints or irises from two different persons vary widely. Ideally interpersonal variations should be much more than the intrapersonal variations. Therefore it is very important to identify and extract those features which minimize intrapersonal variation and maximize interpersonal variations. There are two approaches to signature verification, online and offline differentiated by the way data is acquired. In offline case signature is obtained on a piece of paper and later scanned. While in online case signature is obtained on an electronic tablet and pen. Obviously dynamic information like speed, pressure is lost in offline case unlike online case.
Code has been tested using Off line signature database, Grupo de Procesado Digital de Señales, available at http://www.gpds.ulpgc.es/download/index.htm.
Index Terms: Matlab, source, code, signature recognition, off-line, on-line, verification, identification.
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Figure 1. Signature |
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A simple and effective source code for Off-Line Signature Recognition. |
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Demo code (protected P-files) available for performance evaluation. Matlab Image Processing Toolbox is required.
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Release
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Date
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Major features
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1.0
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2008.04.13 |
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We recommend to check the secure connection to PayPal, in order to avoid any fraud. |
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Signature Recognition System – Click here for your donation. In order to obtain the source code you have to pay a little sum of money: 120 EUROS (less than 168 U.S. Dollars).
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Once you have done this, please email us luigi.rosa@tiscali.it
As soon as possible (in a few days) you will receive our new release of Signature Recognition System. Alternatively, you can bestow using our banking coordinates:
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The authors have no relationship or partnership with The Mathworks. All the code provided is written in Matlab language (M-files and/or M-functions), with no dll or other protected parts of code (P-files or executables). The code was developed with Matlab 2006a. Matlab Image Processing Toolbox is required. The code provided has to be considered “as is” and it is without any kind of warranty. The authors deny any kind of warranty concerning the code as well as any kind of responsibility for problems and damages which may be caused by the use of the code itself including all parts of the source code.
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One Comment on Off-Line Signature Recognition
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Manal on
Mon, 5th Apr 2010 09:39
I’m doing a project on signature recognition, and I need a singatures’ database for testing and training. Do you know where from I can obtain one? Other than the one you have used, coz I tried to contact them and didn’t hear back from them.
It would be a really great help
Best regards
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