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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| Format: | Article |
| Language: | deu |
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Unité Mixte de Recherche 8504 Géographie-cités
1999-01-01
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| Series: | Cybergeo |
| Subjects: | |
| Online Access: | https://journals.openedition.org/cybergeo/5247 |
| _version_ | 1797222937048121344 |
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| author | Charles Schneider |
| author_facet | Charles Schneider |
| author_sort | Charles Schneider |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-08T03:01:20Z |
| format | Article |
| id | doaj.art-dcfa4eaecd9b42f68af570e343dedb5e |
| institution | Directory Open Access Journal |
| issn | 1278-3366 |
| language | deu |
| last_indexed | 2024-04-24T13:29:15Z |
| publishDate | 1999-01-01 |
| publisher | Unité Mixte de Recherche 8504 Géographie-cités |
| record_format | Article |
| series | Cybergeo |
| spelling | doaj.art-dcfa4eaecd9b42f68af570e343dedb5e2024-04-04T09:32:56ZdeuUnité Mixte de Recherche 8504 Géographie-citésCybergeo1278-33661999-01-0110.4000/cybergeo.5247Un outil synthétique du suivi : la vision fréquentielleCharles SchneiderBy 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.https://journals.openedition.org/cybergeo/5247cartographyimage processingspace-frequency representation |
| spellingShingle | Charles Schneider Un outil synthétique du suivi : la vision fréquentielle Cybergeo cartography image processing space-frequency representation |
| title | 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_short | Un outil synthétique du suivi : la vision fréquentielle |
| title_sort | un outil synthetique du suivi la vision frequentielle |
| topic | cartography image processing space-frequency representation |
| url | https://journals.openedition.org/cybergeo/5247 |
| work_keys_str_mv | AT charlesschneider unoutilsynthetiquedusuivilavisionfrequentielle |