CAJ | 학술논문

虹膜定位是虹膜识别中非常重要的一个环节.首先利用灰度平均值法找到瞳孔内初始定位点,并提出一种通过边缘检测模板的新瞳孔定位方法,同时引入C-均值动态聚类分析法提高定位精度.然后在外边界粗定位的基础上,改进了虹膜外边界的精确定位方法,采用此种粗定位与精定位相结合的方法极大缩短了虹膜定位的时间,提高了定位的准确性.大量实验表明,该虹膜定位方法简单可靠,精确度高.取得了非常好的定位效果.
홍막정위시홍막식별중비상중요적일개배절.수선이용회도평균치법조도동공내초시정위점,병제출일충통과변연검측모판적신동공정위방법,동시인입C-균치동태취류분석법제고정위정도.연후재외변계조정위적기출상,개진료홍막외변계적정학정위방법,채용차충조정위여정정위상결합적방법겁대축단료홍막정위적시간,제고료정위적준학성.대량실험표명,해홍막정위방법간단가고,정학도고.취득료비상호적정위효과.
Iris localization is a very important part of iris recognition.Initial located point in pupil is gotten by average gray method.A novel pupil localization algorithm is proposed based on the edge detection template and C-means dynamic clustering algorithm is brought up to improve precision in localization.What is more,on the base of rude localization of outer boundary, accurate localization method of outer boundary is improved.Not only the time cost in the iris localization is sharply shortened but also the precision is improved by the algorithm combining rode localization with accurate localization.Many experiments indicate that the algorithm is easy,reliable,high-precision and encouraging performance are ensured.