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Auteur Katalin Varga |
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Improved land cover mapping using aerial photographs and satellite images / Katalin Varga in Open geosciences, vol 7 n° 1 (January 2015)
[article]
Titre : Improved land cover mapping using aerial photographs and satellite images Type de document : Article/Communication Auteurs : Katalin Varga, Auteur ; Szilárd Szabó, Auteur ; Gergely Szabó, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 15 - 26 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] carte d'occupation du sol
[Termes IGN] classification par maximum de vraisemblance
[Termes IGN] couvert végétal
[Termes IGN] image aérienne
[Termes IGN] image Landsat
[Termes IGN] MNS SRTM
[Termes IGN] précision de la classification
[Termes IGN] variation saisonnièreRésumé : (auteur) Manual Land Cover Mapping using aerial photographs provides sufficient level of resolution for detailed vegetation or land cover maps. However, in some cases it is not possible to achieve the desired information over large areas, for example from historical data where the quality and amount of available images is definitely lower than from modern data. The use of automated and semi automated methods offers the means to identify the vegetation cover using remotely sensed data. In this paper automated methods were tested on aerial photographs and satellite images to extract better and more reliable information about vegetation cover. These testswere performed by using automated analysis of LANDSAT7 images (with and without the surface model of the Shuttle Radar Topography Mission (SRTM)) and two temporally similar aerial photographs. The spectral bands were analyzed with supervised (maximum likelihood) methods. In conclusion, the SRTM and the combination of two temporally similar aerial photographs from earlier years were useful in separating the vegetation cover on a floodplain area. In addition the different date of the vegetation season also gave reliable information about the land cover. High quality information about old and present vegetation on a large area is an essential prerequisites ensuring the conservation of ecosystems. Numéro de notice : A2015-435 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1515/geo-2015-0002 En ligne : https://doi.org/10.1515/geo-2015-0002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77035
in Open geosciences > vol 7 n° 1 (January 2015) . - pp 15 - 26[article]