A distortion-tolerant photorefractive joint transform correlator

A distortion-tolerant recognition process has been successfully implemented in an optical joint transform correlator operating with a liquid crystal television display in the input plane and a photorefractive crystal in the Fourier plane. We have generated the reference by retaining the phase inform...

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Detalles Bibliográficos
Autores principales:	La Mela, Cecilia, Iemmi, Claudio César
Publicado:	2004
Materias:	Optical correlators Pattern recognition Synthetic discrimination functions Algorithms Computer simulation Fourier transforms Functions Liquid crystals Optical correlation Television Joint transform correlators (JTC) Minimum average correlation energy (MACE) Synthetic discrimination functions (SDF) Photoreactivity
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14644258_v6_n9_p894_LaMela http://hdl.handle.net/20.500.12110/paper_14644258_v6_n9_p894_LaMela
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_14644258_v6_n9_p894_LaMela
record_format	dspace
spelling	paper:paper_14644258_v6_n9_p894_LaMela2023-06-08T16:16:47Z A distortion-tolerant photorefractive joint transform correlator La Mela, Cecilia Iemmi, Claudio César Optical correlators Pattern recognition Synthetic discrimination functions Algorithms Computer simulation Fourier transforms Functions Liquid crystals Optical correlation Pattern recognition Television Joint transform correlators (JTC) Minimum average correlation energy (MACE) Optical correlators Synthetic discrimination functions (SDF) Photoreactivity A distortion-tolerant recognition process has been successfully implemented in an optical joint transform correlator operating with a liquid crystal television display in the input plane and a photorefractive crystal in the Fourier plane. We have generated the reference by retaining the phase information of the Fourier transform of a constrained phase-only minimum Euclidean distance synthetic discriminant function filter. This gave rise to a process that successfully detects the target also for distortions not included in the training set. Experimental and theoretical results are shown. Fil:La Mela, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Iemmi, C.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14644258_v6_n9_p894_LaMela http://hdl.handle.net/20.500.12110/paper_14644258_v6_n9_p894_LaMela
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Optical correlators Pattern recognition Synthetic discrimination functions Algorithms Computer simulation Fourier transforms Functions Liquid crystals Optical correlation Pattern recognition Television Joint transform correlators (JTC) Minimum average correlation energy (MACE) Optical correlators Synthetic discrimination functions (SDF) Photoreactivity
spellingShingle	Optical correlators Pattern recognition Synthetic discrimination functions Algorithms Computer simulation Fourier transforms Functions Liquid crystals Optical correlation Pattern recognition Television Joint transform correlators (JTC) Minimum average correlation energy (MACE) Optical correlators Synthetic discrimination functions (SDF) Photoreactivity La Mela, Cecilia Iemmi, Claudio César A distortion-tolerant photorefractive joint transform correlator
topic_facet	Optical correlators Pattern recognition Synthetic discrimination functions Algorithms Computer simulation Fourier transforms Functions Liquid crystals Optical correlation Pattern recognition Television Joint transform correlators (JTC) Minimum average correlation energy (MACE) Optical correlators Synthetic discrimination functions (SDF) Photoreactivity
description	A distortion-tolerant recognition process has been successfully implemented in an optical joint transform correlator operating with a liquid crystal television display in the input plane and a photorefractive crystal in the Fourier plane. We have generated the reference by retaining the phase information of the Fourier transform of a constrained phase-only minimum Euclidean distance synthetic discriminant function filter. This gave rise to a process that successfully detects the target also for distortions not included in the training set. Experimental and theoretical results are shown.
author	La Mela, Cecilia Iemmi, Claudio César
author_facet	La Mela, Cecilia Iemmi, Claudio César
author_sort	La Mela, Cecilia
title	A distortion-tolerant photorefractive joint transform correlator
title_short	A distortion-tolerant photorefractive joint transform correlator
title_full	A distortion-tolerant photorefractive joint transform correlator
title_fullStr	A distortion-tolerant photorefractive joint transform correlator
title_full_unstemmed	A distortion-tolerant photorefractive joint transform correlator
title_sort	distortion-tolerant photorefractive joint transform correlator
publishDate	2004
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14644258_v6_n9_p894_LaMela http://hdl.handle.net/20.500.12110/paper_14644258_v6_n9_p894_LaMela
work_keys_str_mv	AT lamelacecilia adistortiontolerantphotorefractivejointtransformcorrelator AT iemmiclaudiocesar adistortiontolerantphotorefractivejointtransformcorrelator AT lamelacecilia distortiontolerantphotorefractivejointtransformcorrelator AT iemmiclaudiocesar distortiontolerantphotorefractivejointtransformcorrelator
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A distortion-tolerant photorefractive joint transform correlator

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