Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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A Robust Approach to Automatic Iris Localization

  • Xu, Chengzhe (Signal Processing Lab, Department of Communication Engineering, Myongji University) ;
  • Ali, Tauseef (Signal Processing Lab, Department of Communication Engineering, Myongji University) ;
  • Kim, In-Taek (Signal Processing Lab, Department of Communication Engineering, Myongji University)
  • Received : 2008.11.10
  • Accepted : 2009.02.17
  • Published : 2009.03.25
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Abstract

In this paper, a robust method is developed to locate the irises of both eyes. The method doesn't put any restrictions on the background. The method is based on the AdaBoost algorithm for face and eye candidate points detection. Candidate points are tuned such that two candidate points are exactly in the centers of the irises. Mean crossing function and convolution template are proposed to filter out candidate points and select the iris pair. The advantage of using this kind of hybrid method is that AdaBoost is robust to different illumination conditions and backgrounds. The tuning step improves the precision of iris localization while the convolution filter and mean crossing function reliably filter out candidate points and select the iris pair. The proposed structure is evaluated on three public databases, Bern, Yale and BioID. Extensive experimental results verified the robustness and accuracy of the proposed method. Using the Bern database, the performance of the proposed algorithm is also compared with some of the existing methods.

Keywords

References

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