一种虹膜图像质量评估方法

A Method of Iris Image Quality Evaluation

虹膜认证技术是近年来发展起来的一项新的生物认证技术,和传统的方法比较,具有独特性、稳定性、防伪性、无侵犯性等特点,虹膜图像的质量评估是虹膜图像识别的前期工作,也是虹膜图像正确识别的基础,本文针对虹膜图像瞳孔变形、边界模糊、两个圆不同心、严重的眼睑和睫毛遮挡几个典型情况,提出了虹膜图像质量评估的量化方法,试验结果表明此方法有效。

Iris image quality evaluation plays a very important part in iris computer recognition. An iris image quality evaluation method was introduced into this study to distinguish good image from bad image caused by pupil distortion, blurred boundary, two circles appearing not concentric, and severe occlusion by eyelids and eyelashes. The tests based on this method gave good results.