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The progression of research into understanding and mitigating the effects of pupil dilation on iris biometrics is at a point where a formalization of the problem is necessary to tie together several research directions and results. Past research has shown that differences in dilation in a (probe, gallery) pair lead to an increase in false non-match rates. Additionally, analysis continues to show that...
It is known that the probability of a false non-match increases with difference in pupil size between the enrolled eye image and the probe eye image. To address this issue, recent research showed that enrolling multiple images for an eye, with the images selected to have different dilation values, improves performance. However, it may not always be practical to acquire iris images for a range of different...
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