Real-time area correlation tracker implementation based on absolute difference algorithm

Weichao Zhou; Wenhan Jiang; Mei Li; Chunhong Wang; Changhui Rao

doi:10.1117/1.1596937

1 September 2003 Real-time area correlation tracker implementation based on absolute difference algorithm

Weichao Zhou, Wenhan Jiang, Mei Li, Chunhong Wang, Changhui Rao

Optical Engineering, Vol. 42, Issue 9, (September 2003). https://doi.org/10.1117/1.1596937

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.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Weichao Zhou, Wenhan Jiang, Mei Li, Chunhong Wang, and Changhui Rao "Real-time area correlation tracker implementation based on absolute difference algorithm," Optical Engineering 42(9), (1 September 2003). https://doi.org/10.1117/1.1596937

Published: 1 September 2003

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