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30 October 1997 Wavelet detector for distributed objects
Teresa L. P. Olson, Leon H. Sibul
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Proceedings Volume 3169, Wavelet Applications in Signal and Image Processing V; (1997) https://doi.org/10.1117/12.279698
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States
Abstract
This paper investigates the relationship between the traditional wavelet (or matched filter) detector and the estimator correlator (EC) detector formulated in the wavelet domain. The EC detector is actually a weighted wavelet detector, weighted by the scattering function that describes the medium and/or model. The wavelet detector is the optimum detector for point objects but it does not incorporate knowledge of the scattering environment. However, when imaging distributed objects, it is advantageous to take a priori information into account. The EC incorporates this information as a weight on the wavelet image and formulates an estimated spreading function which essentially achieves recombination of highlights and multipath energy. It can be shown that the EC reduces to the wavelet detector when a point object is being imaged.
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Teresa L. P. Olson and Leon H. Sibul "Wavelet detector for distributed objects", Proc. SPIE 3169, Wavelet Applications in Signal and Image Processing V, (30 October 1997); https://doi.org/10.1117/12.279698
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KEYWORDS
Sensors
Wavelets
Scattering
Environmental sensing
Image sensors
Optical correlators
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