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Proceedings Paper

Coordinate Mapping For Pointing And Tracking
Author(s): Kevin R. Wheeler; Richard A. Messner
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Paper Abstract

An image tracking system using log-polar mapping is investigated using a priori knowledge of the target geometry. The shape of the mapped target's leading edge contains information regarding the orientation and location of the target. The projection of the target image for various view angles introduces distortions in the mapped image. These distortions provide the information necessary for adjusting the camera pointing vector such that a perpendicular view angle is maintained. Once a perpendicular view angle is obtained, centering on the target may be accomplished by observing the leading edge of the mapped image. Distortions observed in the leading edge, introduced by offset pointing errors, are used to generate an error signal for camera translation. A leading edge free of distortion indicates that centering has been achieved. Simulation results are presented for various target geometries.

Paper Details

Date Published: 21 March 1989
PDF: 8 pages
Proc. SPIE 1004, Automated Inspection and High-Speed Vision Architectures II, (21 March 1989); doi: 10.1117/12.948969
Show Author Affiliations
Kevin R. Wheeler, University of New Hampshire (United States)
Richard A. Messner, University of New Hampshire (United States)


Published in SPIE Proceedings Vol. 1004:
Automated Inspection and High-Speed Vision Architectures II
Michael J. W. Chen, Editor(s)

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