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A geometric basis for measurement of three-dimensional eye position using image processing
journal contributionposted on 2023-05-17, 18:52 authored by Moore, ST, Haslwanter, T, Curthoys, IS, Smith, ST
Polar cross correlation is commonly used for determination of ocular torsion from video images, but breaks down at eccentric positions if the spherical geometry of the eye is not considered. We have extended this method to allow three-dimensional eye position measurement over a range of ±20 deg by determining the correct projection of the eye onto the image plane of the camera. We also determine the orientation of the camera with respect to the eye, allowing eye position to be represented in appropriate head-fixed coordinates. These algorithms have been validated using both in vitro and in vivo measures of eye position.
Publication titleVision Research: An International Journal for Functional Aspects of Vision
Department/SchoolSchool of Health Sciences
PublisherPergamon-Elsevier Science Ltd
Place of publicationThe Boulevard, Langford Lane, Kidlington, Oxford, England, Ox5 1Gb