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Segmentation of Off-Axis Iris Images

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Encyclopedia of Biometrics

Synonyms

Off-angle or Nonorthogonal segmentation; Segmentation of iris images from noncooperative subjects.

Definition

Iris image segmentation is the process of finding the iris region within an image of the subject’s eye area: distinguishing the iris ring from the sclera, eyelids, and other regions, and also detecting obscurations caused by eyelashes and specular reflection. Off-axis images are those captured when the subject is not looking in the direction of the camera.

Introduction

Iris recognition systems typically require that users position themselves a few inches away from the camera and look into the camera for a few seconds, known as the “stop and stare.” More forgiving and user-friendly interfaces in commercial systems may facilitate the introduction of iris systems into a wider range of applications. Taking it a step further, eliminating the user cooperation requirement entirely would enable deployment of systems in which the subject may not be aware of the image capture,...

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References

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Author information

Authors and Affiliations

  1. The John Hopkins University, Applied Physics Laboratory, Maryland, USA

    Lauren R. Kennell, Ryan N. Rakvic & Randy P. Broussard

Authors
  1. Lauren R. Kennell
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  2. Ryan N. Rakvic
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  3. Randy P. Broussard
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Editor information

Editors and Affiliations

  1. Center for Biometrics and Security Research, Chinese Academy of Sciences, Beijing, China

    Stan Z. Li (Professor) (Professor)

  2. Departments of Computer Science & Engineering, Michigan State University, East Lansing, MI, USA

    Anil Jain (Professor) (Professor)

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Kennell, L.R., Rakvic, R.N., Broussard, R.P. (2009). Segmentation of Off-Axis Iris Images. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_217

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