摘要
Pupil localization is a very important preprocessing step in many reel applications. Accurate and robust pupil localization in non-ideal eye images is a challenging task. A detailed method of pupil localization in non-ideal eye images is proposed. This method is implemented in three main phases： first, segment the rough pupil region based on Gaussian Mixture Model： then modify the rough segmentation result using morphological method to minimize the influence of some disturbing factors; last estimate the pupil parameters based on minimizing the least square error. The proposed method is first tested on CASIA iris image dataset, and then on our self-captured iris dataset which contains a wider variety of iris images. Experiments show that the proposed method can perform well for nonideal eye images of various qualities.
Pupil localization is a very important preprocessing step in many real applications.Accurate and robust pupil localization in non-ideal eye images is a challenging task.A detailed method of pupil localization in non-ideal eye images is proposed.This method is implemented in three main phases:first,segment the rough pupil region based on Gaussian Mixture Model;then modify the rough segmentation result using morphological method to minimize the influence of some disturbing factors;last estimate the pupil parameters based on minimizing the least square error.The proposed method is first tested on CASIA iris image dataset,and then on our self-captured iris dataset which contains a wider variety of iris images.Experiments show that the proposed method can perform well for non-ideal eye images of various qualities.
基金
National Natural Science Foundation (No60427002)
863 Project (No2006AA01Z119) (Partly support)
