A novel and adaptive iris recognition method
Xu Lu · Journal of Optoelectronics·laser · 2008
A novel and adaptive iris recognition method is presented.Firstly,the iris is located and the contour of lower and upper eyelids is fitted,then the iris image is normalized and a 512 columns multiplying 64 rows rectangular iris image is gotten,the effective iris area is obtained adaptively.Secondly,all iris feature points are found by the direction length,width of texture and the neighboring gray in the effective iris area.Thirdly,directional codes are made to feature points and the iris pattern is figured by iris codes.Finally,the different iris patterns are sorted by auto accommodated pattern matching method and the recognition results are achieved.Many experiments show the recognition rates of this method can reach 99.472% that can meet the demand of iris recognition.