Abstract
Iris segmentation is a critical step in the entire iris recognition procedure. Studying eye color as a soft biometric trait provides insight about the influence of pertinent factors in this context, like color spaces, illumination and etc. In this paper a simple and fast method is introduced to extract color iris region, it aims to isolate the iris region from eye color image. This method included three main stages. Firstly, a fundus allocation (Region of interest) allocated by applying Gamma mapping, Median filter, clipping, and mean filter. Secondly, iris isolation-pupil region allocation, where the coordinates of the center and the radius is determined, remove the external extensions, remove the small gaps in the iris area due to the local non-uniformity it iris texture, then establish the proper contour of iris. Thirdly, pupil isolation, the region of pupil is allocated to be subtracted from the iris-pupil region in order to get iris area. The allocation of pupil was done using different image processing steps are gaps filling and gamma mapping. Proposed method tested on color images belong to UPOL data set. A promising allocation results was attained (around 99.7%).
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