Analysis of Dilation in Children and its Impact on Iris Recognition

TL;DR

This study investigates how pupil dilation varies with age and over time in children aged 4 to 11, and examines its effect on iris recognition performance, highlighting age-related differences from adult data.

Contribution

It provides the first longitudinal analysis of pupil dilation in children and its impact on iris recognition accuracy over multiple years.

Findings

Dilation varies significantly with age in children.

Dilation fluctuations affect iris recognition performance.

Longitudinal data shows changes over three years.

Abstract

The dilation of the pupil and it's variation between a mated pair of irides has been found to be an important factor in the performance of iris recognition systems. Studies on adult irides indicated significant impact of dilation on iris recognition performance at different ages. However, the results of adults may not necessarily translate to children. This study analyzes dilation as a factor of age and over time in children, from data collected from same 209 subjects in the age group of four to 11 years at enrollment, longitudinally over three years spaced by six months. The performance of iris recognition is also analyzed in presence of dilation variation.