The Iris Normalization Method Based on Line

Iris recognition is one of the most reliable and accurate biometric technologies. The reason of excentric between iris outside circle and iris inside circle is analysed. And two methods of normalizing irises and a description of the iris normalization algorithm based on line are introduced. This kind of method adopts some lines to describe iris area and has only one analysis model. The result of experiments shows that the method can obtain good normalization effects.