SAR image processing using adaptive stack filter

Stack filters are a special case of non-linear filters. They have a good performance for filtering images with different types of noise while preserving edges and details. A stack filter decomposes an input image into several binary images according to a set of thresholds. Each binary image is filte...

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Detalles Bibliográficos
Autores principales:	Buemi, María Elena, Mejail, Marta Estela
Publicado:	2010
Materias:	Classification Speckle Stack filters Synthetic aperture radar Equivalent number of looks Input image Maximum likelihood classifications Noiseless images Noisy versions Nonlinear filter SAR image processing SAR Images Speckle noise reduction Binary images Boolean functions Image classification Imaging systems Maximum likelihood Radar Synthetic apertures
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01678655_v31_n4_p307_Buemi http://hdl.handle.net/20.500.12110/paper_01678655_v31_n4_p307_Buemi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01678655_v31_n4_p307_Buemi
record_format	dspace
spelling	paper:paper_01678655_v31_n4_p307_Buemi2023-06-08T15:16:59Z SAR image processing using adaptive stack filter Buemi, María Elena Mejail, Marta Estela Classification Speckle Stack filters Synthetic aperture radar Equivalent number of looks Input image Maximum likelihood classifications Noiseless images Noisy versions Nonlinear filter SAR image processing SAR Images Speckle noise reduction Stack filters Binary images Boolean functions Image classification Imaging systems Maximum likelihood Radar Speckle Synthetic apertures Synthetic aperture radar Stack filters are a special case of non-linear filters. They have a good performance for filtering images with different types of noise while preserving edges and details. A stack filter decomposes an input image into several binary images according to a set of thresholds. Each binary image is filtered by a Boolean function. The Boolean function that characterizes an adaptive stack filter is optimal and is computed from a pair of images consisting of an ideal noiseless image and its noisy version. In this work the behavior of adaptive stack filters on synthetic aperture radar (SAR) data is evaluated. With this aim, the equivalent number of looks for stack filtered data are calculated to assess the speckle noise reduction capability of this filter. Then a classification of simulated and real SAR images is carried out on data filtered with a stack filter trained with selected samples. The results of a maximum likelihood classification of these data are evaluated and compared with the results of classifying images previously filtered using the Lee and the Frost filters. © 2009 Elsevier B.V. All rights reserved. Fil:Buemi, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mejail, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01678655_v31_n4_p307_Buemi http://hdl.handle.net/20.500.12110/paper_01678655_v31_n4_p307_Buemi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Classification Speckle Stack filters Synthetic aperture radar Equivalent number of looks Input image Maximum likelihood classifications Noiseless images Noisy versions Nonlinear filter SAR image processing SAR Images Speckle noise reduction Stack filters Binary images Boolean functions Image classification Imaging systems Maximum likelihood Radar Speckle Synthetic apertures Synthetic aperture radar
spellingShingle	Classification Speckle Stack filters Synthetic aperture radar Equivalent number of looks Input image Maximum likelihood classifications Noiseless images Noisy versions Nonlinear filter SAR image processing SAR Images Speckle noise reduction Stack filters Binary images Boolean functions Image classification Imaging systems Maximum likelihood Radar Speckle Synthetic apertures Synthetic aperture radar Buemi, María Elena Mejail, Marta Estela SAR image processing using adaptive stack filter
topic_facet	Classification Speckle Stack filters Synthetic aperture radar Equivalent number of looks Input image Maximum likelihood classifications Noiseless images Noisy versions Nonlinear filter SAR image processing SAR Images Speckle noise reduction Stack filters Binary images Boolean functions Image classification Imaging systems Maximum likelihood Radar Speckle Synthetic apertures Synthetic aperture radar
description	Stack filters are a special case of non-linear filters. They have a good performance for filtering images with different types of noise while preserving edges and details. A stack filter decomposes an input image into several binary images according to a set of thresholds. Each binary image is filtered by a Boolean function. The Boolean function that characterizes an adaptive stack filter is optimal and is computed from a pair of images consisting of an ideal noiseless image and its noisy version. In this work the behavior of adaptive stack filters on synthetic aperture radar (SAR) data is evaluated. With this aim, the equivalent number of looks for stack filtered data are calculated to assess the speckle noise reduction capability of this filter. Then a classification of simulated and real SAR images is carried out on data filtered with a stack filter trained with selected samples. The results of a maximum likelihood classification of these data are evaluated and compared with the results of classifying images previously filtered using the Lee and the Frost filters. © 2009 Elsevier B.V. All rights reserved.
author	Buemi, María Elena Mejail, Marta Estela
author_facet	Buemi, María Elena Mejail, Marta Estela
author_sort	Buemi, María Elena
title	SAR image processing using adaptive stack filter
title_short	SAR image processing using adaptive stack filter
title_full	SAR image processing using adaptive stack filter
title_fullStr	SAR image processing using adaptive stack filter
title_full_unstemmed	SAR image processing using adaptive stack filter
title_sort	sar image processing using adaptive stack filter
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01678655_v31_n4_p307_Buemi http://hdl.handle.net/20.500.12110/paper_01678655_v31_n4_p307_Buemi
work_keys_str_mv	AT buemimariaelena sarimageprocessingusingadaptivestackfilter AT mejailmartaestela sarimageprocessingusingadaptivestackfilter
_version_	1768545252722868224

SAR image processing using adaptive stack filter

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