A novel method of iris image preprocessing
Zhonghua Lin · Journal of Optoelectronics·laser · 2009
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 following operations,such as iris feature extraction and mathcing,can not be influenced by the eyelid and eyelashes,and this can make the iris recognitin method robust.Experimental results on many eye images in several databases demonstrate that the proposed method can effectively resolve all problems included in the eye image and it has reasonable accuracy and rapider execting speed.