Encyclopedia of Biometrics

2015 Edition
| Editors: Stan Z. Li, Anil K. Jain

Signature Matching

  • Marcos Martinez-Diaz
  • Julian Fierrez
  • Seiichiro Hangai
Reference work entry
DOI: https://doi.org/10.1007/978-1-4899-7488-4_140

Synonyms

Signature similarity computation

Definition

The objective of signature matching techniques is to compute the similarity between a given signature and a signature model or reference signature set. Several pattern recognition techniques have been proposed as matching algorithms for signature recognition. In online signature verification systems, signature matching algorithms have followed two main approaches. Feature-based algorithms usually compute the similarity among multidimensional feature vectors extracted from the signature data with statistical classification techniques. On the other hand, function-based algorithms perform matching by computing the distance among time sequences extracted from the signature data with technique such as hidden Markov models and dynamic time warping. Off-line signature matching has followed many different approaches, most of which are related to image processing and shape recognition.

This entry focuses on online signature matching, although...

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Marcos Martinez-Diaz
    • 1
  • Julian Fierrez
    • 2
  • Seiichiro Hangai
    • 3
  1. 1.Biometric Recognition Group – ATVS, Escuela Politecnica SuperiorUniversidad Autonoma de Madrid, Campus de CantoblancoMadridSpain
  2. 2.Universidad Autonoma de MadridMadridSpain
  3. 3.Department of Electrical EngineeringTokyo University of ScienceTokyoJapan