Title:
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Nonlinear filtering in object and Fourier space in a joint transform optical correlator: comparison and experimental realization
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Author:
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Vallmitjana i Rico, Santiago; Carnicer González, Arturo; Martín Badosa, Estela; Juvells Prades, Ignacio
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Other authors:
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Universitat de Barcelona |
Abstract:
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The use of different kinds of nonlinear filtering in a joint transform correlator are studied and compared. The study is divided into two parts, one corresponding to object space and the second to the Fourier domain of the joint power spectrum. In the first part, phase and inverse filters are computed; their inverse Fourier transforms are also computed, thereby becoming the reference in the object space. In the Fourier space, the binarization of the power spectrum is realized and compared with a new procedure for removing the spatial envelope. All cases are simulated and experimentally implemented by a compact joint transform correlator. |
Subject(s):
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-Reconeixement òptic de formes -Filtres (Matemàtica) -Optical pattern recognition -Filters (Mathematics) |
Rights:
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(c) Optical Society of America, 1995
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Document type:
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Article Article - Published version |
Published by:
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Optical Society of America
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