计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (18): 169-171.

• 图形、图像、模式识别 • 上一篇    下一篇

局部曲线拟合的虹膜快速定位的方法研究

姚 钦,史仪凯,王 萑,单 宁   

  1. 西北工业大学,西安 710072
  • 收稿日期:2007-09-18 修回日期:2008-01-16 出版日期:2008-06-21 发布日期:2008-06-21
  • 通讯作者: 姚 钦

Method of fast iris location based on local curve fitting

YAO Qin,SHI Yi-kai,WANG Huan,SHAN Ning   

  1. School of Mechatronic Engineering,Northwestern Polytechnical University,Xi’an 710072,China
  • Received:2007-09-18 Revised:2008-01-16 Online:2008-06-21 Published:2008-06-21
  • Contact: YAO Qin

摘要: 针对多噪声情况下虹膜准确快速定位的困难,提出了一种基于局部曲线拟合的分割算法。该算法的基本思想是离线求出清晰虹膜边界曲线的傅立叶描绘子,然后利用标准曲线对目标图像中的边界曲线进行搜寻拟合,对虹膜位置进行判断,实现对其的快速准确定位。实验结果表明,该算法能够稳定地实现目标分割提取,具有较好的鲁棒性。

Abstract: In view of the limitations of fast and precise iris location,an algorithm for image segmentation based on curve fitting is proposed.The main technique of the algorithm is that off-line acquire Fourier descriptor of boundary,as standard curve,of the clear iris-image,then search and fit the boundary of aim-image through standard curve for accurately and fast estimating the position of iris.The experimental result indicates,the algorithm can steadily realize that the goal is cut apart and drawn,and possess better robustness.