Log-Polar Mapping As A Preprocessing Stage For An Image Tracking System

Joseph G. Bailey; Richard A. Messner

doi:10.1117/12.960255

27 March 1989 Log-Polar Mapping As A Preprocessing Stage For An Image Tracking System

Joseph G. Bailey, Richard A. Messner

Proceedings Volume 1002, Intelligent Robots and Computer Vision VII; (1989) https://doi.org/10.1117/12.960255
Event: 1988 Cambridge Symposium on Advances in Intelligent Robotics Systems, 1988, Boston, MA, United States

Abstract

Researchers at NASA's Johnson Space Center are developing an image tracking algorithm which employs real-time log-polar mapping as a preprocessing stage. Camera output is processed by a programmable coordinate remapper and then provided as input to a hybrid optical correlation system. The positions of correlation peaks indicate tracking error, and therefore it is important that correlation peaks be sharp to make accurate measurements of position possible. This paper presents current research, based on computer simulations, to determine the relationship between the parameters of the log-polar mapping and the sharpness of the resulting correlation peaks. The goals of this research are to formulate a rule for choosing the optimal mapping parameters and to determine which filter implementations yield the sharpest correlation peaks when tracking errors exist. Prior knowledge of the target image is assumed.

Citation Download Citation

Joseph G. Bailey and Richard A. Messner "Log-Polar Mapping As A Preprocessing Stage For An Image Tracking System", Proc. SPIE 1002, Intelligent Robots and Computer Vision VII, (27 March 1989); https://doi.org/10.1117/12.960255

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