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Proceedings Paper

Target tracking using log-polar transform-based shifted phase-encoded joint transform correlation
Author(s): Mohammed Nazrul Islam; Worku T. Bitew
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Paper Abstract

Automatic target detection and tracking requires efficient recognition of the target pattern in variable environmental conditions. Optical joint transform correlation (JTC) method has been proven to be efficient in recognizing a target without requiring complex optical set up. However, the classical JTC suffers from poor correlation performance, which can be improved through the use of different and modified designs. A very successful scheme is developed by employing phase-shifted and phase-encoded fringe-adjusted JTC (SPFJTC), which provides with a high discrimination between a target and non-target objects in a given scene and better utilization of the space-bandwidth resource. Further enhancement of the target detection performance can be achieved by incorporating log-polar transform in the SPFJTC technique. We applied the SPFJTC technique to the log-polar transformation of both the reference image and the input scene that makes the pattern recognition invariant to rotation and scale variations. Peak-to-side lobe ratio is measured and a threshold operation is employed to detect and track a target in an unknown input scene.

Paper Details

Date Published: 5 May 2014
PDF: 8 pages
Proc. SPIE 9094, Optical Pattern Recognition XXV, 90940B (5 May 2014); doi: 10.1117/12.2051575
Show Author Affiliations
Mohammed Nazrul Islam, The State Univ. of New York (United States)
Worku T. Bitew, The State Univ. of New York (United States)


Published in SPIE Proceedings Vol. 9094:
Optical Pattern Recognition XXV
David Casasent; Tien-Hsin Chao, Editor(s)

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