Sub-iris Technique for Non-ideal Iris Recognition

A fast specular reflection removal based on pixels properties method

“…It is important to ensure the pupil region is free from the specular reflection since a lot of works [3,[17][18][19] used the center of pupil as a base for iris segmentation. Specular reflection can be spotted in a shape of circle which is similar to the shape of pupil.…”

“…In this work, the pixels properties methods as in [14,18] are used as a reference for the proposed specular reflection removal method. The pixels properties method is a technique that calculates the pixels and properties of the selected area.…”

“…This happens because of the iris localization depends on the location of pupil. In the researches in [3,[17][18][19], the center of pupil is used as a base to segment the accurate iris region.…”

“…The third stage is normalization where the isolated iris is converted from the circular shape into a rectangular polar coordinate. This stage can compensate the changing iris pattern due to the erosion of pupil [18]. The fourth stage is feature extraction.…”

“…Both methods are considered as the pioneer of iris recognition. Other than that, the method using only partial part of iris [18] and LoG filters [20] can also be used for iris segmentation. The iris recognition system itself can be implemented in personal computer [4], FPGA [21] and GPU [22].…”