| 基于灰度和几何特征的虹膜定位 |
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| 引用本文： | 乔静.基于灰度和几何特征的虹膜定位[J].西安文理学院学报,2009,12(4):45-47. |
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| 作者姓名： | 乔静 |
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| 作者单位： | 西南科技大学信息工程学院,四川绵阳621010 |
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| 摘 要： | 采用粗定位和精定位相结合的方法进行虹膜定位.首先,利用虹膜为环形的特点,采用几何算法粗略得出虹膜外边界的圆心和半径.然后利用瞳孔区域的灰度值较小的特点对虹膜的内边界进行粗定位.最后根据粗定位的结果采用一定的算子对虹膜的内、外边界精确定位.实验结果表明,定位的精度较高,且速度较快.
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| 关 键 词： | 虹膜定位 灰度 内边界 外边界 |
Iris Localization Based on Gray and Geometrical Feature |
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| QIAO Jing.Iris Localization Based on Gray and Geometrical Feature[J].Journal of Xi‘an University of Arts & Science:Natural Science Edition,2009,12(4):45-47. |
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| Authors: | QIAO Jing |
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| Institution: | QIAO Jing (School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China) |
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| Abstract: | Cursory combined with refined method was used to iris localization in this article. Firstly, according to iris is a kind of cirque, algorithm based on geometrical feature is used to locate outer boundary of iris curso- rily. Then according to that the gray of pupil area is very low, the inner boundary of iris is located cursorily. At the end, based on the result of cursory localization, the outer and inner boundary of iris is located refinedly by a kind of arithmetic operator. The last result indicates that the precision and the speed is higher than other iris localization methods. |
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| Keywords: | iris localization gray inner boundary outer boundary |
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