【摘要】 提出了一种新颖简单的虹膜内边缘(瞳孔)定位算法.此算法分别对虹膜图像的每一行进行处理.首先,采用一种简单的齿形变换对虹膜图像每一行的灰度曲线进行变换,变换后的灰度曲线为齿形并且虹膜内边缘点出现在齿形曲线的转折点处.然后,根据在虹膜内边缘点处齿形灰度曲线的斜率由负值变为正值的特点,检测虹膜内边缘点并定位虹膜内边缘的位置.此算法具有新颖、简单、准确和速度快等特点.更多还原

【Abstract】 This article putsforwarda new and simple location algorithm of iris inneredge(pupil).The algorithm dealswithevery line of an iris image.Firstly,the gray curve of every line in an iris image is transformed by a simple dentiform transformation.After the transformation,the gray curve is dentiformand the points of the iris inneredgeare at the turning points of the dentiformcurve.Afterwards,the points on the edge of the iris inner edge will be got and the iris inner edge will also be located according to the characteristicthat on the points of the iris inneredge the slopeof the dentiformcurve changes from negative valueto plus value.The characteristic of the algorithm is novelty,simple,nicety,and quick.更多还原