A wavelet-based method for the determination of the relative resolution between remotely sensed images

Spatial resolution is a key parameter of all remote sensing satellites and platforms. The nominal spatial resolution of satellites is a well-known characteristic because it is directly related to the area in ground that represents a pixel in the detector. Nevertheless, in practice, the actual resolu...

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Detalles Bibliográficos
Autores: Núñez de Murga, Jorge, 1955-, Fors Aldrich, Octavi, Otazu Porter, Xavier, Palà, Vicenç, Arbiol, Román, Merino Espasa, María Teresa
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2006
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/8562
Acceso en línea:https://hdl.handle.net/2445/8562
Access Level:acceso abierto
Palabra clave:Satèl·lits artificials
Teledetecció
Artificial satellites
Image resolution
Remote sensing
Wavelet transforms
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spelling A wavelet-based method for the determination of the relative resolution between remotely sensed imagesNúñez de Murga, Jorge, 1955-Fors Aldrich, OctaviOtazu Porter, XavierPalà, VicençArbiol, RománMerino Espasa, María TeresaSatèl·lits artificialsTeledeteccióArtificial satellitesImage resolutionRemote sensingWavelet transformsSpatial resolution is a key parameter of all remote sensing satellites and platforms. The nominal spatial resolution of satellites is a well-known characteristic because it is directly related to the area in ground that represents a pixel in the detector. Nevertheless, in practice, the actual resolution of a specific image obtained from a satellite is difficult to know precisely because it depends on many other factors such as atmospheric conditions. However, if one has two or more images of the same region, it is possible to compare their relative resolutions. In this paper, a wavelet-decomposition-based method for the determination of the relative resolution between two remotely sensed images of the same area is proposed. The method can be applied to panchromatic, multispectral, and mixed (one panchromatic and one multispectral) images. As an example, the method was applied to compute the relative resolution between SPOT-3, Landsat-5, and Landsat-7 panchromatic and multispectral images taken under similar as well as under very different conditions. On the other hand, if the true absolute resolution of one of the images of the pair is known, the resolution of the other can be computed. Thus, in the last part of this paper, a spatial calibrator that is designed and constructed to help compute the absolute resolution of a single remotely sensed image is described, and an example of its use is presented.IEEE2006info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/8562Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a http://dx.doi.org/10.1109/TGRS.2006.875359IEEE Transactions on Geoscience and Remote Sensing, 2006, vol. 44, núm. 9, p. 2539-2548.http://dx.doi.org/10.1109/TGRS.2006.875359(c) IEEE, 2006info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/85622026-05-27T06:46:51Z
dc.title.none.fl_str_mv A wavelet-based method for the determination of the relative resolution between remotely sensed images
title A wavelet-based method for the determination of the relative resolution between remotely sensed images
spellingShingle A wavelet-based method for the determination of the relative resolution between remotely sensed images
Núñez de Murga, Jorge, 1955-
Satèl·lits artificials
Teledetecció
Artificial satellites
Image resolution
Remote sensing
Wavelet transforms
title_short A wavelet-based method for the determination of the relative resolution between remotely sensed images
title_full A wavelet-based method for the determination of the relative resolution between remotely sensed images
title_fullStr A wavelet-based method for the determination of the relative resolution between remotely sensed images
title_full_unstemmed A wavelet-based method for the determination of the relative resolution between remotely sensed images
title_sort A wavelet-based method for the determination of the relative resolution between remotely sensed images
dc.creator.none.fl_str_mv Núñez de Murga, Jorge, 1955-
Fors Aldrich, Octavi
Otazu Porter, Xavier
Palà, Vicenç
Arbiol, Román
Merino Espasa, María Teresa
author Núñez de Murga, Jorge, 1955-
author_facet Núñez de Murga, Jorge, 1955-
Fors Aldrich, Octavi
Otazu Porter, Xavier
Palà, Vicenç
Arbiol, Román
Merino Espasa, María Teresa
author_role author
author2 Fors Aldrich, Octavi
Otazu Porter, Xavier
Palà, Vicenç
Arbiol, Román
Merino Espasa, María Teresa
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Satèl·lits artificials
Teledetecció
Artificial satellites
Image resolution
Remote sensing
Wavelet transforms
topic Satèl·lits artificials
Teledetecció
Artificial satellites
Image resolution
Remote sensing
Wavelet transforms
description Spatial resolution is a key parameter of all remote sensing satellites and platforms. The nominal spatial resolution of satellites is a well-known characteristic because it is directly related to the area in ground that represents a pixel in the detector. Nevertheless, in practice, the actual resolution of a specific image obtained from a satellite is difficult to know precisely because it depends on many other factors such as atmospheric conditions. However, if one has two or more images of the same region, it is possible to compare their relative resolutions. In this paper, a wavelet-decomposition-based method for the determination of the relative resolution between two remotely sensed images of the same area is proposed. The method can be applied to panchromatic, multispectral, and mixed (one panchromatic and one multispectral) images. As an example, the method was applied to compute the relative resolution between SPOT-3, Landsat-5, and Landsat-7 panchromatic and multispectral images taken under similar as well as under very different conditions. On the other hand, if the true absolute resolution of one of the images of the pair is known, the resolution of the other can be computed. Thus, in the last part of this paper, a spatial calibrator that is designed and constructed to help compute the absolute resolution of a single remotely sensed image is described, and an example of its use is presented.
publishDate 2006
dc.date.none.fl_str_mv 2006
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/8562
url https://hdl.handle.net/2445/8562
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a http://dx.doi.org/10.1109/TGRS.2006.875359
IEEE Transactions on Geoscience and Remote Sensing, 2006, vol. 44, núm. 9, p. 2539-2548.
http://dx.doi.org/10.1109/TGRS.2006.875359
dc.rights.none.fl_str_mv (c) IEEE, 2006
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) IEEE, 2006
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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