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Shadow-Effect correction in aerial color imagery / H.G. Sohn in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 5 (May 2008)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 74 n° 5 (May 2008) . - pp 611 - 618 Titre : Shadow-Effect correction in aerial color imagery Type de document : Article/Communication Auteurs : H.G. Sohn, Auteur ; K.H. Yun, Auteur Année de publication : 2008 Article en page(s) : pp 611 - 618 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] correction des ombres [Termes IGN] données multisources [Termes IGN] image aérienne [Termes IGN] image en couleur [Termes IGN] image satellite [Termes IGN] milieu urbain [Termes IGN] segmentation d'image Résumé : (Auteur) Due to the existence of shadows, especially in urban environments, it is difficult to extract semantic information from aerial and high-resolution satellite images. In this paper, an efficient method of correcting shadow effects using multisource data sets in aerial color images is proposed. The proposed method has three steps. First, it accurately detects the shadowed regions using the image geometry and the solar position of the image acquisition data. Then, the detected shadowed regions are segmented according to land surface type. Finally, the shadow effects of the segmented regions are corrected by directly comparing the same non shadow features with the segmented shadows. In the application part of this paper, the proposed techniques were applied in the extraction of an asphalt road from an image. Copyright ASPRS Numéro de notice : A2008-177 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.74.5.611 En ligne : https://doi.org/10.14358/PERS.74.5.611 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29172 [article]