Abstract
To focus on objects at various distances, the lens of the
eye must change shape to adjust its refractive power. This
change in lens shape causes a change in the shape of the iris
surface which can be measured by examining the curvature
of the iris. This work isolates the variable of iris curvature in the recognition process and shows that differences
in iris curvature degrade matching ability. To our knowledge, no other work has examined the effects of varying iris
curvature on matching ability. To examine this degradation,
we conduct a matching experiment across pairs of images
with varying degrees of iris curvature differences. The results show a statistically significant degradation in matching ability. Finally, the real world impact of these findings
is discussed
