液晶与显示2016，Vol.31Issue(12)：1131-1136,6.DOI:10.3788/YJYXS20163112.1131
虹膜图像的质量评价研究
Study for iris image quality assessment
摘要
Abstract
The quality of collecting iris image is vital to whether recognizing iris image is right in iris recognition system.A new algorithm is proposed for the defocused and occluded iris images.Firstly the high frequency power of the right and left part of the pupil is calculated by Laplacian of Gaussian operator to discard the defocused images.Secondly,the average gray value of the upper region of the pupil is computed to discard the occluded images by eyelid.Finally,the occluded degree by eyelash is measured through the gradient information of the upper region of the pupil.The experimental results show that,the average processing speed of the algorithm is 0.020 9 s per frame,which fully meets the requirement of real-time iris recognition system,and also shows this algorithm is fast and efficient for iris image quality evaluation.关键词
虹膜图像/质量评价/高斯拉普拉斯算子/眼睑睫毛遮挡Key words
iris image/quality evaluation/Laplacian of Gaussian/occlude of eyelids and eyelash分类
信息技术与安全科学引用本文复制引用
史春蕾,周凤文,胡雨露,孙海江..虹膜图像的质量评价研究[J].液晶与显示,2016,31(12):1131-1136,6.基金项目
吉林省教育厅“十二五”科学技术研究项目(No．2015359) （No．2015359）
长春师范大学实验教学改革研究项目Supported by “Twelfth Five-Year”Science and Technology Research Project of the Education Department of Jilin Province (No．2015359) （No．2015359）
Experiment Teaching Reformation Research Project of Changchun Normal University （）
