Pupil dilation degrades iris biometric performance

@article{Hollingsworth2009PupilDD,
  title={Pupil dilation degrades iris biometric performance},
  author={Karen Hollingsworth and Kevin W. Bowyer and Patrick J. Flynn},
  journal={Computer Vision and Image Understanding},
  year={2009},
  volume={113},
  pages={150-157}
}
Iris biometrics research has largely ignored the problems associated with variations in pupil dilation between the enrollment image and the image to be recognized or verified. Indeed, in most current systems, information about pupil dilation is discarded when the iris region is normalized to a dimensionless polar coordinate system from which the iris code is obtained. This work studies the effect of pupil dilation on the accuracy of iris biometrics. We found that when the degree of dilation is… CONTINUE READING
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