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Proceedings Paper

Optical Multiple Object Tracking Techniques
Author(s): Hua-Kuang Liu; Tien-Hsin Chao
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Paper Abstract

The techniques for the tracking of multiple objects making independent movements are reviewed. Basically, the techniques are based on the creation of multiple channels for the holographic matched filter. Multiple filters instead of one filter are recorded in the Fourier transform plane. Each of these filters, or a combination of them, can be used to track one object. The filter or filters used for each object should have a specific reference beam directed at a specific incident angle so that the output correlation plane associated with each input object can be adequately separated. Two methods of recording and parallel addressing of the multiple filters are described. One is to use a Fourier transform lens in combination with a specifically designed diffraction grating. The other is to use a custom designed multiple-focus holographic lens. The design criterion for both the diffraction grating and hololens is that when these optics are employed, an N x N array of diffraction limited spectra should be produced at the Fourier plane such that an MSF array of equal diffraction efficiency can be obtained. Available techniques will be discussed and their merits assessed.

Paper Details

Date Published: 8 February 1989
PDF
Proc. SPIE 0960, Real-Time Signal Processing for Industrial Applications, (8 February 1989); doi: 10.1117/12.947791
Show Author Affiliations
Hua-Kuang Liu, Jet Propulsion Laboratory/California Institute of Technology (United States)
Tien-Hsin Chao, Jet Propulsion Laboratory/California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 0960:
Real-Time Signal Processing for Industrial Applications
Bahram Javidi, Editor(s)

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