Iris segmentation for visible wavelength and near infrared eye images

被引:16
作者
Jan, Farmanullah [1 ,3 ]
Usman, Imran [2 ]
机构
[1] COMSATS Inst Informat Technol, Dept Phys, Islamabad 44000, Pakistan
[2] COMSATS Inst Informat Technol, Ctr Adv Studies Telecommun, Islamabad 44000, Pakistan
[3] COMSATS Inst Informat Technol, Dept Elect Engn, Islamabad 44000, Pakistan
来源
OPTIK | 2014年 / 125卷 / 16期
关键词
Iris segmentation; Iris recognition; Security; Pattern recognition; LOCALIZATION; RECOGNITION; HISTOGRAM;
D O I
10.1016/j.ijleo.2014.04.009
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
State-of-the-art iris segmentation algorithms exhibit poor performance for non-ideal data, which is mainly because of the noise such as low contrast, non-uniform illumination, reflections, and among others. To address this issue, a robust iris segmentation scheme is proposed that includes the following: First, a set of the Seed-pixels in a preprocessed eye image is marked adaptively. Next, a two-fold scheme based on a Circu-differential accumulator (CDA) and gray statistics is adopted to localize coarse iris region robustly. Notably, the proposed CDA has close resemblance with the Hough transform; however, it consumes relatively less memory and is free from thresholding as well. Similarly, pupillary boundary is localized, which is verified through an intensity test as well. Next, a refine estimate for the limbic boundary is extracted. After that, iris boundaries are regularized using the Fourier series. Finally, the eyelids are localized using a Para-differential accumulator (PDA), and eyelashes and reflections are also localized adaptively in the polar form of iris. Experimental results on the near infrared (NIR) and visible wavelength (VW) iris databases show that the proposed technique outperforms contemporary approaches. (C) 2014 Elsevier GmbH. All rights reserved.
引用
收藏
页码:4274 / 4282
页数:9
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