.Iris image segmentation based on phase congruency[J].Optoelectronics Letters,2006,2(5):386-388 Iris image segmentation based on phase congruency GAO Chao JIANG Da-qin Guo Yong-cai Institute of Opto-electronic Engineering, Chongqing University, Chongqing 400044, China Abstract:       Iris image segmentation is very important for an iris recognition system. There are always iris noises as eyelash,eyelid,reflection and pupil in iris images. The paper proposes a virtual method of segmentation. By locating and normalizing iris images with Gabor filter,we can acquire information of image texture in a series of frequencies and orientations. Iris noise regions are determined based on phase congruency by a group of Gabor filters whose kernels are suitable for edge detection. These regions are filled according to the characteristics of iris noise. The experimental results show that the proposed method can segment iris images effectively. Hits: 3779 Download times: 185 View Full Text    Download reader