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Optical Engineering

Real-time area correlation tracker implementation based on absolute difference algorithm
Author(s): Weichao Zhou; Wenhan Jiang; Mei Li; Chunhong Wang; Changhui Rao
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Paper Abstract

Area correlation tracking is an effective solution for tracking targets that have neither prominent features nor high contrast with the background. We address the implementation of a real-time area correlation tracker (ACT) for an on-board application based on the absolute difference algorithm. The ACT consists of a very high speed and very large scale field programming gate array (FPGA), which contains a special structure of parallel pipelined systolic array to accomplish the correlation computation, and a float-pointed digital signal processor (DSP), which does the parabolic interpolation. The configuration and the timing of the ACT are presented and the ACT is applied successfully in a real-time tracking system. The computation latency for correlation tracking is about 2 ms, which can satisfy the demand of the tracking system used for detecting the solar pore's motion induced by atmospheric turbulence and the mechanical vibrations of the solar telescope.

Paper Details

Date Published: 1 September 2003
PDF: 6 pages
Opt. Eng. 42(9) doi: 10.1117/1.1596937
Published in: Optical Engineering Volume 42, Issue 9
Show Author Affiliations
Weichao Zhou, Institute of Optics and Electronics (China)
Wenhan Jiang, Institute of Optics and Electronics (China)
Mei Li, Institute of Optics and Electronics (China)
Chunhong Wang, Institute of Optics and Electronics (China)
Changhui Rao, Institute of Optics and Electronics (China)


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