一种基于修正差分进化的虹膜定位算法(英文)

被引:5
作者
邹德旋 [1 ]
王鑫 [2 ]
段纳 [1 ]
机构
[1] 江苏师范大学电气工程及自动化学院
[2] 沈阳建筑大学信息与控制工程学院
关键词
修正差分进化; 虹膜定位; 混沌序列; 变异操作; 中心解; 去噪;
D O I
暂无
中图分类号
TP391.41 [];
学科分类号
080203 ;
摘要
提出一种用于虹膜定位的差分进化算法(modified differential evolution,MDE).MDE和原始差分进化算法(differential evolution,DE)主要有3点不同:第一,MDE采用了基于混沌序列的尺度因子和基于均匀分布的交叉率,这有助于提高候选解的多样性;第二,MDE使用中心解来修正最差解的变异操作,这有助于提高候选解的质量;第三,MDE使用最好解来帮助受困解摆脱局部最优点.在搜索边缘前,两种有效的去噪方法被用来减少虹膜图像中噪声的影响.去噪后,再使用MDE和其他4种方法来进行虹膜定位.在中科院(Chinese Academy of Sciences Institute of Automation,CASIA)眼图数据库中选择200幅来自不同个体的虹膜图像来验证和比较MDE及其他4种方法的效率.实验结果表明,与其他4种方法相比,MDE使用更少的执行时间来定位瞳孔边缘和虹膜边缘.
引用
收藏
页码:1194 / 1200
页数:7
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