An accurate iris segmentation method based on union-find-set

Abstract

Iris segmentation is one of the most important steps in iris recognition system, many existing localization methods model the iris outer boundary by a circle. However the iris outer boundary are not a circle in case of partially opened eye image. In this paper, we propose a method based on Union-Find-Set to extract the accurate iris boundary. The proposed method have been tested on the a visible light iris database captured by our own laboratory. The experimental results show that the proposed method outperforms the state-of-the-art method not only on localization accuracy rate but also on localization speed.