Unconstrained visible spectrum iris with textured contact lens variations: Database and benchmarking
Iris recognition in visible spectrum has developed into an
active area of research. This has elevated the importance of
efficient presentation attack detection algorithms, particularly
in security based critical applications. In this paper,
we present the first detailed analysis of the effect of contact
lenses on iris recognition in visible spectrum. We introduce
the first contact lens database in visible spectrum, Unconstrained
Visible Contact Lens Iris (UVCLI) Database,
containing samples from 70 classes with subjects wearing
textured contact lenses in indoor and outdoor environments
across multiple sessions. We observe that textured contact
lenses degrade the visible spectrum iris recognition performance
by over 25% and thus, may be utilized intentionally
or unintentionally to attack existing iris recognition
systems. Next, three iris presentation attack detection
(PAD) algorithms are evaluated on the proposed database
and highest PAD accuracy of 82.85% is observed. This illustrates
that there is a significant scope of improvement
in developing efficient PAD algorithms for detection of textured
contact lenses in unconstrained visible spectrum iris
images.
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