Nowadays the importance of biometric identification technologies is increasing due to their features such as reliability, speed and difficulty of forgery. Systems for people recognition based on biometric features have broad applications in both commercial and security areas. One of the most reliable and being actively developed biometric technology is persons identification based on the iris pattern.

The first successful implementation of the iris recognition system was described by J. Daugman in 1993. This work, though published more than 10 years ago, still remains very valuable because it presents well thought solutions for each part of the system. Daugman's publication is known as fundamental in the area of iris identification and further researchers, including us, refer to it.