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Monitoring heathland habitat status using hyperspectral image classification and unmixing / Stephanie Delalieux

Public contenu dans Workshop on Hyperspectral Image and Signal Processing : Evolution in Remote Sensing (WHISPERS 2010, Reykjavik, Iceland, 14-16 June 2010) / Geoscience and Remote Sensing Society (GRSS) (2010)   Titre : Monitoring heathland habitat status using hyperspectral image classification and unmixing Type de document : texte imprimé Auteurs : Stephanie Delalieux, Auteur ; Ben Somers, Auteur ; Birgen Haest, Auteur ; Lammert Kooistra, Auteur ; Sander Mucher, Auteur ; Jeroen Vanden Borre, Auteur Importance : pp. 1-4 Langues : Français (fre) Catégories : [habitats/milieux] 3 - Landes, fruticées et prairies [Thèmes] Habitat naturel et semi-naturel [Thèmes] Télédétection Mots-clés : donnée hyperspectrale  état de conservation Résumé : "Natura 2000, an EU-wide network of nature protection areas, has as main objective the achievement or maintenance of a favorable conservation status of habitats protected by the EU Habitats directives. Within this framework, this study examines a strategy to characterize the status of heathland vegetation from airborne hyperspectral AHS data in the Kalmthoutse Heide, Flanders, Belgium. A hierarchical classification scheme was set-up with the highest detail focusing on vegetation structural elements that determine the conservation status of the habitat. Although conventional classification algorithms performed very well (accuracies > 90%) in discriminating broad land cover classes and habitat types (level 1 to 3), they failed in accurately distinguishing different heather age classes which are an important indicator for the structural quality of the heathland habitat (level 4). Since all heather life stages have their specific structural characteristics, a subpixel unmixing approach succeeded by a decision tree classification was implemented to map variations in heathland morphology and as such enhance the ecological value of information derived from remote sensing data." (source : auteurs) Type de publication : article de livre Référence biblio : Delalieux S., Somers B., Haest B., Kooistra L., Mucher S., Vanden Borre J., 2010 - Monitoring heathland habitat status using hyperspectral image classification and unmixing. In : GRSS, 2010 - Workshop on Hyperspectral Image and Signal Processing : Evolution in Remote Sensing (WHISPERS 2010, Reykjavik, Iceland, 14-16 June 2010). Institute of Electrical and Electronics Engineers, 10.1109/WHISPERS17236.2010., 1-4. ID PMB : 72143 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=72143

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