Tracking iris surface deformation using Elastic Graph Matching
Phang, Sammy S., Boles, Wageeh W., & Collins, Michael J. (2006) Tracking iris surface deformation using Elastic Graph Matching. In of the Twenty-first International Conference, Image and Vision Computing New Zealand (IVCNZ2006), 2006, Great Barrier Island, New Zealand.
We propose a method to track the iris surface deformation in image sequences captured by a special infrared illuminated high-speed camera using elastic graph matching. A circular grid elastic graph (iris graph) to track the iris radial and circular movement of pupillary activity caused by varying lighting conditions is introduced. We compare the phase similarity with the magnitude similarity for tracking iris features and we also relate the determination of the weight of topography preservation in the similarity cost function to the amount of movement of the object being tracked. The algorithm is tested with a series of synthetic iris images and a series of real iris images. We show that the deformation of the iris surface area during the constriction of the pupil operates mainly in the middle and the peripheral parts of the iris and that this deformation is non linear.
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|Item Type:||Conference Paper|
|Additional Information:||For more information, please refer to the conference website (see hypertext link) or contact the author.|
|Keywords:||Iris movement, iris recognition, elastic graph matching, Gabor filters, tracking|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Vision Science (111303)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Optical Technology (111302)
|Divisions:||Current > Research Centres > Centre for Health Research
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
|Copyright Owner:||Copyright 2006 (please consult authors)|
|Deposited On:||18 Jan 2008|
|Last Modified:||29 Feb 2012 13:19|
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