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Proceedings Paper

Human saccadic eye movements and tracking by active foveation in log polar space
Author(s): Fee-Lee Lim; Svetha Venkatesh; Geoffrey A. W. West
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Paper Abstract

One of the possible models of the human visual system (HVS) in the computer vision literature has a high resolution fovea and exponentially decreasing resolution periphery. The high resolution fovea is used to extract necessary information in order to solve a vision task and the periphery may be used to detect motion. To obtain the desired information, the fovea is guided by the contents of the scene and other knowledge to position the fovea over areas of interest. These eye movements are called saccades and corrective saccades. A two stage process has been implemented as a mechanism for changing foveation in log polar space. Initially, the open loop stage roughly foveates on the best interest feature and then the closed loop stage is invoked to accurately iteratively converge onto the foveation point. The open loop stage developed for the foveation algorithm is applied to saccadic eye movements and a tracking system. Log polar space is preferred over Cartesian space as: (1) it simultaneously provides high resolution and a wide viewing angle; and (2) feature invariance occurs in the fovea which simplifies the foveation process.

Paper Details

Date Published: 22 April 1996
PDF: 12 pages
Proc. SPIE 2657, Human Vision and Electronic Imaging, (22 April 1996); doi: 10.1117/12.238730
Show Author Affiliations
Fee-Lee Lim, Curtin Univ. of Technology (Australia)
Svetha Venkatesh, Curtin Univ. of Technology (Australia)
Geoffrey A. W. West, Curtin Univ. of Technology (Australia)

Published in SPIE Proceedings Vol. 2657:
Human Vision and Electronic Imaging
Bernice E. Rogowitz; Jan P. Allebach, Editor(s)

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