| 嵌入式虹膜定位算法 |
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| 引用本文： | 马丽红,张学东,赵忠夫.嵌入式虹膜定位算法[J].计算机应用与软件,2007,24(6):30-32. |
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| 作者姓名： | 马丽红 张学东 赵忠夫 |
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| 作者单位： | 鞍山科技大学计算机科学与工程学院图形图像研究所 辽宁鞍山114044(马丽红，张学东)，香港科技大学工学院 香港(赵忠夫) |
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| 摘 要： | 利用虹膜的几何特征及平面几何的知识,提出了一种支持嵌入式系统的虹膜定位算法.即通过移动两条经过瞳孔且相互垂直的弦来定位虹膜内边缘;并利用巩膜与虹膜的灰度值悬殊这一特点,对图像反相处理来突出巩膜,再确定虹膜外边缘上的六个点,从而定位虹膜外边缘.算法避免了搜索的盲目性,实时性有较大改善,能较好地支持嵌入式系统.
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| 关 键 词： | 嵌入式系统 虹膜识别 Canny算子 最小二乘法 嵌入式系统 虹膜定位算法 ALGORITHM LOCATION 改善 实时性 搜索 内边缘 处理 反相 图像 灰度值 巩膜 瞳孔 移动 支持 知识 平面几何 几何特征 利用 |
| 修稿时间： | 2005-08-08 |
AN IMBEDDED IRIS LOCATION ALGORITHM |
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| Ma Lihong,Zhang Xuedong,Zhao Zhongfu.AN IMBEDDED IRIS LOCATION ALGORITHM[J].Computer Applications and Software,2007,24(6):30-32. |
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| Authors: | Ma Lihong Zhang Xuedong Zhao Zhongfu |
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| Affiliation: | 1.Institute of Graphics and Image, School of Computer Science and Engineering,Anshan University of Science and Technology ,Anshan 114044, Liaoning , China; 2. School of Engineering,Hongkong University of Science and Technology,Hongkong, China |
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| Abstract: | Based on the geometrical characteristic of iris and knowledge of plane geometry,an algorithm for rapid iris location applied in the imbedded system is proposed.The inner edge of the iris is positioned by moving two chords,which are vertical to each other and pass through the pupil;The image is inverted to make the sclera prominent,by taking the advantage of the great difference of grey value between the sclera and the iris,so that the six points of the outer boundary of the iris are located.Consequently,the outer edge of the iris are figured out.This algorithm reduces the blindness of the search process and has an improvement on real time.So,it can preferably support the imbedded system. |
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| Keywords: | Imbedded system Iris identification Canny template Method of least square |
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