Journal on Communications ›› 2014, Vol. 35 ›› Issue (3): 208-215.doi: 10.3969/j.issn.1000-436x.2014.03.024

• Academic communication • Previous Articles     Next Articles

Nonlinear scale-space based boundary localization for nonideal iris

Hong-lin WAN1,2,Bao-sheng LI3,Min HAN4,Deng-wang LI1   

  1. 1 School of Physics and Electronic Science,Shandong Normal University,Jinan 250014,China
    2 School of Computer Science and Technology,Southeast University,Nanjing 210018,China
    3 Shandong Cancer Hospital,Jinan 250117,China
    4 School of Information Science and Engineering,Shandong University,Jinan 250100,China
  • Online:2014-03-25 Published:2017-08-17
  • Supported by:
    The National Natural Science Foundation of China;Independent Innovation Program of University of Jinan;The Natural Science Foundation of Shandong Province;The Open Project of State Key Lab

Abstract:

A nonlinear scale-space based localization method of nonideal iris boundaries was proposed.The method eliminates small-scaled geometric structures while preserving large-scaled iris boundaries by nonlinear diffusions with the scale-evolution property.Moreover it combines such diffusions with the frame of multiresolution analysis,and achieves fast and effective iris boundary detection.Experimental results indicate that compared with the classical methods,the proposed algorithm extract nonideal iris boundaries accurately and efficiently with overcoming the disadvantageous influences of the nonideal factors.

Key words: iris boundary localization, biometrics, nonlinear scale-space, partial differential equations

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