# Parameterization of Written Signatures based on EFD

### Pere Marti-Puig, Jaume Danés, Jordi Solé-Casals

#### Abstract

In this work we propose a method to quantify written signatures from digitalized images based on the use of Elliptical Fourier Descriptors (EFD). As usually signatures are not represented as a closed contour, and being that a necessary condition in order to apply EFD, we have developed a method that represents the signatures by means of a set of closed contours. One of the advantages of this method is that it can reconstruct the original shape from all the coefficients, or an approximated shape from a reduced set of them finding the appropriate number of EFD coefficients required for preserving the important information in each application. EFD provides accurate frequency information, thus the use of EFD opens many possibilities. The method can be extended to represent other kind of shapes.

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#### Paper Citation

#### in Harvard Style

Marti-Puig P., Danés J. and Solé-Casals J. (2013). **Parameterization of Written Signatures based on EFD** . In *Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: MPBS, (BIOSTEC 2013)* ISBN 978-989-8565-36-5, pages 439-444. DOI: 10.5220/0004359004390444

#### in Bibtex Style

@conference{mpbs13,

author={Pere Marti-Puig and Jaume Danés and Jordi Solé-Casals},

title={Parameterization of Written Signatures based on EFD},

booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: MPBS, (BIOSTEC 2013)},

year={2013},

pages={439-444},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0004359004390444},

isbn={978-989-8565-36-5},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: MPBS, (BIOSTEC 2013)

TI - Parameterization of Written Signatures based on EFD

SN - 978-989-8565-36-5

AU - Marti-Puig P.

AU - Danés J.

AU - Solé-Casals J.

PY - 2013

SP - 439

EP - 444

DO - 10.5220/0004359004390444