The focus of this study was to longitudinally evaluate iris recognition for infants between the ages of 0 to 2 years old. Image quality metrics of infant and adult irises acquired on the same iris camera were compared. Matching performance was evaluated for four groups, infants 0 to 6 months, 7 to 12 months, 13 to 24 months, and adults. A mixed linear regression model was used to determine if infants’ genuine similarity scores changed over time. This study found that image quality metrics were different between infants and adults but in the older group, (13 to 24 months old) the image quality metric scores were more likely to be similar to adults. Infants 0 to 6 months old had worse performance at an FMR of 0.01% than infants 7 to 12 months, 13 to 24 months, and adults.


Infant Biometrics, Biometrics, Iris Recognition

Date of this Version



Technology Leadership and Innovation

Department Head

Patrick Connolly

Month of Graduation



Master of Science

Head of Graduate Program

Patrick Connolly

Advisor 1 or Chair of Committee

Stephen J. Elliott

Committee Member 1

Kevin J. O'Connor

Committee Member 2

Kathryn C. Seigfried-Spellar