Encyclopedia of Biometrics

2009 Edition
| Editors: Stan Z. Li, Anil Jain

Fusion, User-Specific

  • Julian Fierrez
  • Javier Ortega-Garcia
Reference work entry
DOI: https://doi.org/10.1007/978-0-387-73003-5_161



User-specific fusion in the framework of biometrics, initially devised for score fusion in the verification mode, refers to techniques used for information fusion in which there is a specific fusion function for each user enrolled in the system. These fusion functions are retrieved and used for information integration in the same way the enrolled templates corresponding to the claimed identities are retrieved and used for matching.

User-specific fusion techniques find application in several biometric fusion scenarios, e.g., multi-modal fusion, where some subjects may be not adequate for recognition based on specific modalities (these evidences can be ignored or given less importance in the information fusion step), or multi-algorithm fusion, where some subjects may be better recognized based on particular algorithms (their fusion functions can be adapted to give more importance to those...

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Julian Fierrez
    • 1
  • Javier Ortega-Garcia
    • 1
  1. 1.Biometric Recognition Group – ATVSEscuela Politecnica Superior, Universidad Autonoma de Madrid, Campus de CantoblancoMadridSpain