Encyclopedia of Biometrics

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

Iris Image Quality

  • Natalia A. Schmid
Reference work entry
DOI: https://doi.org/10.1007/978-0-387-73003-5_166



Iris image quality evaluation is a procedure of measuring information content of iris imagery at the stage of iris acquisition or at early processing stage. The information content may be decided to be insufficient to be used for iris identification based on a single image. In this case, the image may be discarded, or combined with other imagery to improve recognition capabilities of an iris system. Evaluated quality metrics would be the guidelines in making decisions regarding further steps with respect to acquired imagery.


Iris image quality assessment is an important research thrust recently identified in the field of iris biometrics [1, 2, 3]. This research is tightly related to the research on nonideal iris. Its major role is to determine, at the stage of data acquisition or at the early stage of processing, what the amount of information for the purposes of processing, recognition, and...

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Natalia A. Schmid
    • 1
  1. 1.West Virginia UniversityMorgantownUSA