吉林大学学报（理学版）2011，Vol.49Issue(6)：1095-1100,6.
一种快速的虹膜定位算法
A Fast Iris Localization Method
摘要
Abstract
The authors proposed a combination of Fourier descriptors with the least square method for iris localization. On locating the inner boundary of iris, an improved tracking algorithm was introduced to obtain point-sequences by tracking the edge of the binarization pupil. After Fourier descriptors transforming, the least square method was finally used to fit the inner circle. On locating the outer boundary, the gray gradient information on the left and right parts of the iris was appropriately used. Based on this information, the outer boundary point-sequences were extracted. Similarly, the outer circle can be fitted by the least square method at last. Experimental results show that the method can overcome the eyelashes and eyelid occlusion, and also improve the localization speed and accuracy. The results can meet the requirements of real-time iris recognition system.关键词
虹膜定位/傅里叶描绘子/最小二乘法/轮廓跟踪Key words
iris localization/ Fourier descriptors/ least squares method/ contour tracking分类
信息技术与安全科学引用本文复制引用
陈前,王甦菁,刘小华,高蕾,周春光..一种快速的虹膜定位算法[J].吉林大学学报（理学版）,2011,49(6):1095-1100,6.基金项目
国家自然科学基金(批准号:60873146 （）
60973092 （）
60903097)、国家高技术研究发展计划863项目基金(批准号:2009AA02Z307)、吉林省生物识别新技术重点实验室项目(批准号:20082209)、吉林大学"211工程"三期建设项目和符号计算与知识工程教育部重点实验室项目. （批准号:2009AA02Z307）
