A torsional eye movement calculation algorithm for low contrast images in video-oculography

Video-oculography (VOG) is a frequently used clinical technique to detect eye movements. In this research, head mounted small video-cameras and IR-illumination are employed to image the eye. Many algorithms have been developed to extract horizontal and vertical eye movements from the video images. D...

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Bibliographic Details
Published in:2010 Annual International Conference of the IEEE Engineering in Medicine and Biology 2010-01, p.5628-5631
Main Authors: Jansen, S M H, Kingma, H, Peeters, R L M, Westra, R L
Format: Article
Language:English
Subjects:
Algorithm design and analysis
Biomedical imaging
Biomedical measurements
Coils
Iris
Pixel
Robustness
Online Access:Request full text
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Summary:Video-oculography (VOG) is a frequently used clinical technique to detect eye movements. In this research, head mounted small video-cameras and IR-illumination are employed to image the eye. Many algorithms have been developed to extract horizontal and vertical eye movements from the video images. Designing a method to determine torsional eye movements is a more complex task. The use of IR-wavelengths required for illumination in certain clinical tests results in a very low image contrast. In such images, iris textures are almost invisible, making them unsuited for direct application of standard matching algorithms, which are used to calculate torsional eye movements. This research presents the design and implementation of a robust torsional eye movement detection algorithm for VOG. This algorithm uses a new approach to measure the torsional eye movement and is suitable for low contrast videos. The algorithm is implemented in a clinical device and its performance is compared to that of alternative techniques.
ISSN:1094-687X
1558-4615
DOI:10.1109/IEMBS.2010.5628040