Software implementation of the OSIRIS iris recognition algorithm in FPGA

In this paper, we present a software implementation of an iris recognition algorithm on a FPGA (Field Programmable Gate Array). We use the OSIRIS reference systems developed in the framework of the BioSecure project which is an implementation of the well-knoun Daugman approach [10]. This system is composed of two modules. The first one uses the Hough transform to segment and normalize the iris. The second module applies a Gabor filter on the normalized image and calculates the similarity score between two images using the Hamming distance. OSIRIS algorithm has performance (EER=7.04%) when it is running on the PC in ICE 2005 Database. This system is coded in C++ using the library OpenCV (Open Source Computer Vision). This library is difficult to implement it in FPGA. that´s why, we first remove this library in our code than improve this algorithm. Finally, we implement it on a CYCLONE II DE2 Board FPGA using the NIOS II processor which is characterized by its flexibility and programmability.