为了实现具有高准确性的非侵犯性虹膜识别,讨论了人眼图像中存在的由于虹膜识别的非侵犯性所造成的一些问题,提出了一种新的虹膜图像预处理方法。该方法包括内边界定位、眼睑检测、眼毛检测、外边界定位、虹膜归一化等操作。经该方法预处理得到的虹膜图像不包含眼睑和眼毛等干扰,使虹膜特征提取和匹配等过程不会受到各种干扰的影响,从而保证虹膜识别方法的健壮性。在多种图像库中的人眼图像上进行实验的结果证明,该方法能够有效地解决人眼图像中存在的问题,具有理想的准确性和较快的执行速度。
In order to achieve the non-intrusive iris recognition having high accuracy,some problems contained in the eye image which are caused by the non-intrusive property of iris recognition are discussed and a novel method of iris image preprocessing is proposed.The proposed method consists of inner boundary localization,eyelid detection,eyelashes detection,outer boundary localization,and iris normalization.Iris images obtained through the proposed method have no disturbance of eyelid or eyelashes at all,so the f...