Abstract
Iris localization is the basis of iris recognition, iris medical diagnosis and other technical fields. In view of image of Asian iris, according to the characteristics of the human eye pupil, the combination method of image back-complement enhancement and improved particle swarm optimization is firstly adopted to fit and locate the inner circle of iris. Then, combined with the characteristics of the outer iris boundary, the outer iris circle is located by using the method of sub-regional noise reduction and improved particle swarm optimization. Meanwhile, coordinate transformation approach is introduced for normalization of image. Finally, the feasibility of the method is verified by using iris library of Chinese Academy of Sciences and the self-built iris library sample. This study successfully overcomes the interference of the spot in library and can efficiently complete the segmentation of the iris region.
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