Optical Multiple Object Tracking Techniques

Hua-Kuang Liu; Tien-Hsin Chao

doi:10.1117/12.947791

8 February 1989 Optical Multiple Object Tracking Techniques

Hua-Kuang Liu, Tien-Hsin Chao

Proceedings Volume 0960, Real-Time Signal Processing for Industrial Applications; (1989) https://doi.org/10.1117/12.947791
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

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.

Citation Download Citation

Hua-Kuang Liu and Tien-Hsin Chao "Optical Multiple Object Tracking Techniques", Proc. SPIE 0960, Real-Time Signal Processing for Industrial Applications, (8 February 1989); https://doi.org/10.1117/12.947791

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KEYWORDS

Diffraction gratings

Diffraction

Signal processing

Holography

Filtering (signal processing)

Optical tracking

Optical design

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