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Classifying and mapping wildfire severity: a comparison of methods / C.K. Brewer in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 11 (November 2005)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 71 n° 11 (November 2005) . - pp 1311 - 1320 Titre : Classifying and mapping wildfire severity: a comparison of methods Type de document : Article/Communication Auteurs : C.K. Brewer, Auteur ; J.C. Winne, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 1311 - 1320 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] analyse comparative [Termes IGN] analyse en composantes principales [Termes IGN] cartographie des risques [Termes IGN] classification par réseau neuronal [Termes IGN] dommage matériel [Termes IGN] Etats-Unis [Termes IGN] image Landsat-TM [Termes IGN] image multitemporelle [Termes IGN] incendie de forêt [Termes IGN] méthode robuste [Termes IGN] réflectance Résumé : (Auteur) This study evaluates six different approaches to classifying and mapping fire severity using multi-temporal Landsat Thematic Mapper data. The six approaches tested include: two based on temporal image differencing and ratioing between pre-fire and post-fire images, two based on principal component analysis of pre- and post-fire imagery, and two based on artificial neural networks, one using just post-fire imagery and the other both pre- and post-fire imagery. Our results demonstrated the potential value for any of these methods to provide quantitative fire severity maps, but one of the image differencing methods (ND4/7) provided a flexible, robust, and analytically simple approach that could be applied anywhere in the Continental U.S. Based on the results of this test, the ND4/7 was implemented operationally to classify and map fire severity over 1.2 million hectares burned in the Northern Rocky Mountains and Northern Great Plains during the 2000 fire season, as well as the 2001 fire season (Gmelin and Brewer, 2002). Approximately the same procedure was adopted in 2001 by the USDA Forest Service, Remote Sensing Applications Center to produce Burned Area Reflectance Classifications for national-level support of Burned Area Emergency Rehabilitation activities (Orlemann, 2002). Numéro de notice : A2005-426 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.14358/PERS.71.11.1311 En ligne : https://doi.org/10.14358/PERS.71.11.1311 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27562 [article]