Iris recognition algorithms based on texture analysis

Abstract

Iris recognition has become a popular research in recent years due to its reliability and nearly perfect recognition rates. Iris recognition system has three main stages: image preprocessing, feature extraction and template matching. An innovative method is proposed to extract iris features based on texture analysis. Iris textures are analyzed to capture the discriminating frequency information. Specific filters with different center frequency are applied to three different zones to extract the texture of the iris. Different weightings are given to each zone depending on its contribution to the recognition. The encoded binary templates are compact in size and can avoid the visibility of the individual iris images. The templates are suitable for implementing iris recognition devices using DSP (Digital Signal Processor). The proposed method was evaluated using CASIA iris image database version 1.0. Experimental results show that the proposed approach has achieved high accuracy of 98.62%.