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Parcel-based classification / J. Wijnant in GEO: Geoconnexion international, vol 5 n° 2 (february 2006)

Public [article]  inGEO: Geoconnexion international > vol 5 n° 2 (february 2006) . - pp 22 - 24 Titre : Parcel-based classification Type de document : Article/Communication Auteurs : J. Wijnant, Auteur ; T. Steenberghen, Auteur Année de publication : 2006 Article en page(s) : pp 22 - 24 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] classification orientée objet [Termes IGN] classification pixellaire [Termes IGN] image à haute résolution [Termes IGN] milieu urbain [Termes IGN] parcelle cadastrale [Termes IGN] précision de la classification [Termes IGN] utilisation du sol Résumé : (Auteur) For many years high resolution imagery like Ikonos and QuickBird has been available to the public. In contrast to our common sense the increase in spatial resolution does not automatically lead to improved classification accuracy, in particular in urban areas. The automatic classification of land cover classes often requires an object-based approach where classification is based on homogeneous objects, rather than pixels. Because traditional image analysis software is not adapted to this new methodology, the user is forced to invest in expensive new software or to develop new algorithms. This paper presents an alternative classification method, parcel-based, in order to overcome these obstacles. In a first phase an ordinary per-pixel classification is performed and results are summarized and assigned to land parcels. In next phase the land parcels are classified into final land use classes by means of a discriminant analysis of the parcels. Numéro de notice : A2006-052 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74920 [article]

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