Patent ID: 7715594
Filing Date: 2010-05-11
Classification: G06K

Abstract:
1. A method of iris recognition using cumulative-sum-based change point analysis comprising: transforming an iris image into a polar coordinated image; dividing the polar coordinated image into a plurality of unit cells in which each unit cell comprises a plurality of pixels; assigning a characteristic cell value to each corresponding unit cell; grouping the unit cells together into a plurality of first groups comprising j numbers of first groups, wherein each first group comprises N unit cells such that both j and N are integers greater than one; determining an avenge characteristic cell value for each j wherein X is the average characteristic cell value in a j th group in the first groups, N is the number of unit cells in each first group, and X j,i is the assigned characteristic cell value of an i th unit cell of the j th group in the first groups; calculating cumulative sums corresponding to each j identifying, from within each j generating a pattern vector having a plurality of bits corresponding to cell units associated with the first groups.