Experiment Research on Uniqueness of Incomplete Iris Patterns

In iris recognition system,iris region is generally incomplete,many literatures have shown that iris feature have(uniqueness) for complete iris region.Free-feature number can indicate pattern-separability.In fact,the iris regions usually are incompletely in iris recognition process,even if there is part of iris region in some images.Whether or not there is pattern(uniqueness) in small iris regions is valuable studying for iris recognition.Research results show that there is still enough features in part of iris pattern and false reject rate will increase with iris regions decreasing.