Un outil synthétique du suivi : la vision fréquentielle

Un outil synthétique du suivi : la vision fréquentielle

By modifying the rules in the representation of observations, one does not only modify the representation’s aspect, but also its informational contents, and the principles of interpreting the observations. Fourier’s filterings, associated to the use of a colour graphic variable according to its freq...

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Autor principal: Charles Schneider
Formato: article
Lenguaje:DE
EN
FR
IT
PT
Publicado: Unité Mixte de Recherche 8504 Géographie-cités 1999
Materias:
cartography
image processing
space-frequency representation
Geography (General)
G1-922
Acceso en línea:https://doaj.org/article/dcfa4eaecd9b42f68af570e343dedb5e
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id oai:doaj.org-article:dcfa4eaecd9b42f68af570e343dedb5e
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spelling oai:doaj.org-article:dcfa4eaecd9b42f68af570e343dedb5e2021-12-02T11:11:35ZUn outil synthétique du suivi : la vision fréquentielle1278-336610.4000/cybergeo.5247https://doaj.org/article/dcfa4eaecd9b42f68af570e343dedb5e1999-01-01T00:00:00Zhttp://journals.openedition.org/cybergeo/5247https://doaj.org/toc/1278-3366By modifying the rules in the representation of observations, one does not only modify the representation’s aspect, but also its informational contents, and the principles of interpreting the observations. Fourier’s filterings, associated to the use of a colour graphic variable according to its frequential physical logic, offer an alternative to the mass analysis and representation of geographical forms. After having briefly reminded the method, the author examines the changes of the concepts introduced by the space-frequency structuring of the observations. The complex surfaces are differentiated and reorganised according to the produced scale hierarchies : the links between the units and the spatial frame structuring the forms are thus highlighted. In the example proposed here, a Spot urban image, only a part of the extracted space-frequency information is presented : the value saturation/interferences, reproducible in black and white.Charles SchneiderUnité Mixte de Recherche 8504 Géographie-citésarticlecartographyimage processingspace-frequency representationGeography (General)G1-922DEENFRITPTCybergeo (1999)
institution DOAJ
collection DOAJ
language DE
EN
FR
IT
PT
topic cartography
image processing
space-frequency representation
Geography (General)
G1-922
spellingShingle cartography
image processing
space-frequency representation
Geography (General)
G1-922
Charles Schneider
Un outil synthétique du suivi : la vision fréquentielle
description By modifying the rules in the representation of observations, one does not only modify the representation’s aspect, but also its informational contents, and the principles of interpreting the observations. Fourier’s filterings, associated to the use of a colour graphic variable according to its frequential physical logic, offer an alternative to the mass analysis and representation of geographical forms. After having briefly reminded the method, the author examines the changes of the concepts introduced by the space-frequency structuring of the observations. The complex surfaces are differentiated and reorganised according to the produced scale hierarchies : the links between the units and the spatial frame structuring the forms are thus highlighted. In the example proposed here, a Spot urban image, only a part of the extracted space-frequency information is presented : the value saturation/interferences, reproducible in black and white.
format article
author Charles Schneider
author_facet Charles Schneider
author_sort Charles Schneider
title Un outil synthétique du suivi : la vision fréquentielle
title_short Un outil synthétique du suivi : la vision fréquentielle
title_full Un outil synthétique du suivi : la vision fréquentielle
title_fullStr Un outil synthétique du suivi : la vision fréquentielle
title_full_unstemmed Un outil synthétique du suivi : la vision fréquentielle
title_sort un outil synthétique du suivi : la vision fréquentielle
publisher Unité Mixte de Recherche 8504 Géographie-cités
publishDate 1999
url https://doaj.org/article/dcfa4eaecd9b42f68af570e343dedb5e
work_keys_str_mv AT charlesschneider unoutilsynthetiquedusuivilavisionfrequentielle
_version_ 1718396199022624768

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