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A new differential geometric method to rectify digital images of the Earth's surface using isothermal coordinates / M. Karslioglu in IEEE Transactions on geoscience and remote sensing, vol 43 n° 3 (March 2005)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 43 n° 3 (March 2005) . - pp 666 - 672 Titre : A new differential geometric method to rectify digital images of the Earth's surface using isothermal coordinates Type de document : Article/Communication Auteurs : M. Karslioglu, Auteur ; J. Freidrich, Auteur Année de publication : 2005 Article en page(s) : pp 666 - 672 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] Ankara (Turquie) [Termes IGN] carte photographique [Termes IGN] ellipsoïde (géodésie) [Termes IGN] orthoimage [Termes IGN] projection orthographique [Termes IGN] redressement d'image [Termes IGN] redressement différentiel [Termes IGN] World Geodetic System 1984 Résumé : (Auteur) A new method to rectify monoscopic digital images and generate orthoimages of the earth's surface is described. It replaces the standard procedure, which transfers the perspective projection of a frame photograph to an orthographic projection of pixels onto a reference plane using corresponding corrections. Instead, the perspective forward projection is kept but every pixel is vertically mapped along the surface normal onto a curved reference surface, for example, the ellipsoid of the World Geodetic System 1984 under the condition that a precise enough surface elevation model is available. The gained ellipsoidal coordinates (latitude, longitude and height) of each pixel are then transformed into isothermal coordinates like the Universal Transverse Mercator coordinates. Their differential geometric characteristics allow mapping every pixel to a reference plane producing, after some interpolation between irregularly spaced pixels, a photomap with the same geometric properties as any other topographic map. The suitability of the method is demonstrated by two photomaps from Ankara, Turkey, which are compared to high-quality topographic maps whereby the average position errors are about 2-3 pixels. Numéro de notice : A2005-169 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.842483 En ligne : https://doi.org/10.1109/TGRS.2004.842483 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27307 [article]

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