venkatesh-humansaccadic-1996.pdf (997.5 kB)
Human saccadic eye movements and tracking by active foveation in log polar space
conference contribution
posted on 1996-01-01, 00:00 authored by F L Lim, Svetha VenkateshSvetha Venkatesh, G WestOne 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.
History
Event
Human Vision and Electronic Imaging (1996 : San Jose, Calif.)Pagination
338 - 349Publisher
SPIELocation
San Jose, Calif.Place of publication
Bellingham, Wash.Publisher DOI
Start date
1996-01-29End date
1996-02-01ISSN
0277-786XISBN-10
081942031XLanguage
engPublication classification
E1.1 Full written paper - refereedCopyright notice
199, SPIEEditor/Contributor(s)
B Rogowitz, J AllebachTitle of proceedings
SPIE 1996 : Proceedings of SPIE - the International Society for Optical EngineeringUsage metrics
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