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The characteristics and interpretability of land surface change and implications for project design / T.L. Sohl in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 4 (April 2004)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 4 (April 2004) . - pp 439 - 448 Titre : The characteristics and interpretability of land surface change and implications for project design Type de document : Article/Communication Auteurs : T.L. Sohl, Auteur ; A.L. Gallant, Auteur ; T.R. Loveland, Auteur Année de publication : 2004 Article en page(s) : pp 439 - 448 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photo-interprétation [Termes IGN] classification automatique d'objets [Termes IGN] détection de changement [Termes IGN] occupation du sol [Termes IGN] photo-interprétation [Termes IGN] photo-interprétation assistée par ordinateur Résumé : (Auteur) The need for comprehensive, accurate information on landcover change has never been greater. While remotely sensed imagery affords the opportunity to provide information on land-cover change over large geographic expanses at a relatively low cost, the characteristics of land-surface change bring into question the suitability of many commonly used methodologies. Algorithm-based methodologies to detect change generally cannot provide the same level of accuracy as the analyses done by human interpreters. Results from the Land Cover Trends project, a cooperative venture that includes the U.S. Geological Survey, Environmental Protection Agency, and National Aeronautics and Space Administration, have shown that land-cover conversion is a relatively rare event, occurs locally in small patches, varies geographically and temporally, and is spectrally ambiguous. Based on these characteristics of change and the type of information required, manual interpretation was selected as the primary means of detecting change in the Land Cover Trends project. Mixtures of algorithm-based detection and manual interpretation may often prove to be the most feasible and appropriate design for change-detection applications. Serious examination of the expected characteristics and measurability of change must be considered during the design and implementation phase of any change analysis project. Numéro de notice : A2004-120 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.4.439 En ligne : https://doi.org/10.14358/PERS.70.4.439 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26647 [article]