Iris unwrapping using the Bresenham circle algorithm for real-time iris recognition
Matthew T. Carothers, Hau Ngo, Ryan N. Rakvic, Randy P. Broussard · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2015
An efficient parallel architecture design for the iris unwrapping process in a real-time iris recognition system using the Bresenham Circle Algorithm is presented in this paper. Based on the characteristics of the model parameters this algorithm was chosen over the widely used polar conversion technique as the iris unwrapping model. The architecture design is parallelized to increase the throughput of the system and is suitable for processing an inputted image size of 320 × 240 pixels in real-time using Field Programmable Gate Array (FPGA) technology. Quartus software is used to implement, verify, and analyze the design’s performance using the VHSIC Hardware Description Language. The system’s predicted processing time is faster than the modern iris unwrapping technique used today∗.