Calibration-free gaze tracking for automatic measurement of visual acuity in human infants

Most existing vision-based methods for gaze tracking need a tedious calibration process. In this process, subjects are required to fixate on a specific point or several specific points in space. However, it is hard to cooperate, especially for children and human infants. In this paper, a new calibra...

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Bibliographic Details
Published in2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Vol. 2014; pp. 962 - 965
Main Authors Xiong, Chunshui, Huang, Lei, Liu, Changping
Format Conference Proceeding Journal Article
LanguageEnglish
Published United States IEEE 01.01.2014
Subjects
Adolescent
Adult
Algorithms
Automation
Calibration
Cameras
Child
Child, Preschool
Feature extraction
Female
Fixation, Ocular - physiology
Humans
Infant
Male
Polynomials
Pupil - physiology
Training
Vectors
Visual Acuity - physiology
Visualization
Young Adult
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Summary:Most existing vision-based methods for gaze tracking need a tedious calibration process. In this process, subjects are required to fixate on a specific point or several specific points in space. However, it is hard to cooperate, especially for children and human infants. In this paper, a new calibration-free gaze tracking system and method is presented for automatic measurement of visual acuity in human infants. As far as I know, it is the first time to apply the vision-based gaze tracking in the measurement of visual acuity. Firstly, a polynomial of pupil center-cornea reflections (PCCR) vector is presented to be used as the gaze feature. Then, Gaussian mixture models (GMM) is employed for gaze behavior classification, which is trained offline using labeled data from subjects with healthy eyes. Experimental results on several subjects show that the proposed method is accurate, robust and sufficient for the application of measurement of visual acuity in human infants.
ISSN:1094-687X
1557-170X
DOI:10.1109/EMBC.2014.6943752