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Comparing RADARSAT-1 and IKONOS satellite images for urban features detection / Dan Johan Weydahl (2003)  

Public Titre : Comparing RADARSAT-1 and IKONOS satellite images for urban features detection Type de document : Article/Communication Auteurs : Dan Johan Weydahl, Auteur ; Frédéric Bretar, Auteur ; P. Bjerke, Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2003 Conférence : URBAN 2003, 2nd GRSS/ISPRS Joint Workshop on Remote Sensing and Data Fusion over Urban Areas 22/05/2003 23/05/2003 Berlin Allemagne Proceedings IEEE Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] analyse comparative [Termes IGN] détection automatique [Termes IGN] image Ikonos [Termes IGN] image Radarsat [Termes IGN] image satellite [Termes IGN] milieu urbain Résumé : (auteur) In this paper, a comparison of the visual appearance and detection of different man-made objects in an urban area in Norway is presented using IKONOS and RADARSAT-1 images. Results show that RADARSAT-1 fine mode images add very limited information to the IKONOS panchromatic image for many mapping applications. One explanation for the seemingly lack of information from the synthetic aperture radar (SAR) data, is that the IKONOS sensor image the Earth ground with a resolution of 1 m, while the RADARSAT-1 fine mode only has 9 m resolution. Despite these matters, it is shown that RADARSAT-1 may uniquely detect certain objects or structures and thereby give additional knowledge to the interpretation of an IKONOS image. Multi-temporal RADARSAT-1 acquisitions can also be used to detect man-made changes at times when weather conditions hamper optical image acquisitions. It is expected that new SAR satellites with resolutions down towards 1 m, work much better as a complementary, all-weather information source to the optical ones. Numéro de notice : C2003-047 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/DFUA.2003.1220009 Date de publication en ligne : 24/10/2011 En ligne : https://doi.org/10.1109/DFUA.2003.1220009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101140