Paper Info
Title
Effect of Pupil Dilation and Constriction on the Distribution of Bit Errors within the Iris
Abstract
Texture information in the iris image is not uniform in discriminatory information content for biometric identity verification. The bits in an iris code obtained from the image differ in their consistency from one sample to another for the same identity. In this work, errors in bit strings are systematically analysed in order to investigate the effect of light-induced and drug-induced pupil dilation and constriction on the consistency of iris texture information. The statistics of bit errors are computed for client and impostor distributions as functions of radius and angle. Under normal conditions, a V-shaped radial trend of decreasing bit errors towards the central region of the iris is obtained for client matching, and it is observed that the distribution of errors as a function of angle is uniform. When iris images are affected by pupil dilation or constriction the radial distribution of bit errors is altered. A decreasing trend from the pupil outwards is observed for constriction, whereas a more uniform trend is observed for dilation. The main increase in bit errors occurs closer to the pupil in both cases.
Year
DOI
Venue
2014
10.1109/CVPRW.2014.12
CVPR Workshops
Keywords
Field
DocType
error statistics,image coding,image matching,image texture,iris recognition,biometric identity verification,bit error radial distribution,bit error statistics,bit string errors,client matching,discriminatory information content,drug-induced pupil constriction,drug-induced pupil dilation,impostor distributions,iris code,iris image,iris texture information,light-induced pupil constriction,light-induced pupil dilation,normal conditions,texture information
Computer vision,Pupillary response,Dilation (morphology),Iris code,Normal conditions,Pupil,Constriction,Artificial intelligence,Biometrics,Mathematics,Bit error rate
Conference
ISSN
Citations 
PageRank 
2160-7508
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Inmaculada Tomeo-Reyes100.34
Vinod Chandran220.69
Tomeo-Reyes, I.374.86