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The Biometric Menagerie – A Fuzzy and Inconsistent Concept

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Part of the Advances in Intelligent Systems and Computing book series (AISC,volume 195)

Abstract

This paper proves that in iris recognition, the concepts of sheep, goats, lambs and wolves - as proposed by Doddington and Yager in the so-called Biometric Menagerie, are at most fuzzy and at least not quite well defined. They depend not only on the users or on their biometric templates, but also on the parameters that calibrate the iris recognition system. This paper shows that, in the case of iris recognition, the extensions of these concepts have very unsharp and unstable (non-stationary) boundaries. The membership of a user to these categories is more often expressed as a degree (as a fuzzy value) rather than as a crisp value. Moreover, they are defined by fuzzy Sugeno rules instead of classical (crisp) definitions. For these reasons, we said that the Biometric Menagerie proposed by Doddington and Yager could be at most a fuzzy concept of biometry, but even this status is conditioned by improving its definition. All of these facts are confirmed experimentally in a series of 12 exhaustive iris recognition tests undertaken for University of Bath Iris Image Database while using three different iris code dimensions (256x16, 128x8 and 64x4), two different iris texture encoders (Log Gabor and Haar Hilbert) and two different types of safety models.

Keywords

  • iris recognition
  • fuzzy
  • inconsistent
  • biometric menagerie

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  • DOI: 10.1007/978-3-642-33941-7_6
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References

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Correspondence to Nicolaie Popescu-Bodorin .

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Popescu-Bodorin, N., Balas, V.E., Motoc, I.M. (2013). The Biometric Menagerie – A Fuzzy and Inconsistent Concept. In: Balas, V., Fodor, J., Várkonyi-Kóczy, A., Dombi, J., Jain, L. (eds) Soft Computing Applications. Advances in Intelligent Systems and Computing, vol 195. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33941-7_6

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  • DOI: https://doi.org/10.1007/978-3-642-33941-7_6

  • Publisher Name: Springer, Berlin, Heidelberg

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