Joint Transform Correlation With The Synthetic Estimation Filter

Stanley E. Monroe Jr.; Richard D. Juday; Jerome Knopp

doi:10.1117/12.962228

5 February 1990 Joint Transform Correlation With The Synthetic Estimation Filter

Stanley E. Monroe Jr., Richard D. Juday, Jerome Knopp

Proceedings Volume 1151, Optical Information Processing Systems and Architectures; (1990) https://doi.org/10.1117/12.962228
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

The synthetic estimation filter (SEF) combines a set of input images into a much smaller set of filters. Those input images correspond to views of a known object taken with a variety of values of the pose parameter to be estimated. The response of the filter to variations in the pose parameter is tailored so that estimation can be done to a precision considerably finer than the intervals between filters in the pose space. We here extend the technique to the joint transform correlator; as a reference we use the composite image from which the SEF is conventionally calculated. Precautions are necessary for practical reasons. For example, the SEF algorithm may call for negative values in the image, an unrealizable condition with amplitude encoding, whereas with phase-mostly filtering in the SEF, negative image values are easily accommodated.

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Stanley E. Monroe Jr., Richard D. Juday, and Jerome Knopp "Joint Transform Correlation With The Synthetic Estimation Filter", Proc. SPIE 1151, Optical Information Processing Systems and Architectures, (5 February 1990); https://doi.org/10.1117/12.962228

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KEYWORDS

Optical correlators

Fourier transforms

Image filtering

Joint transforms

Charge-coupled devices

Optical signal processing

Optical filters

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