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A progressive morphological filter for removing nonground measurements from airborne Lidar data / K. Zhang in IEEE Transactions on geoscience and remote sensing, vol 41 n° 4 (April 2003)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 41 n° 4 (April 2003) . - pp 872 - 882 Titre : A progressive morphological filter for removing nonground measurements from airborne Lidar data Type de document : Article/Communication Auteurs : K. Zhang, Auteur ; S.C. Chen, Auteur ; D. Whitman, Auteur ; et al., Auteur Année de publication : 2003 Article en page(s) : pp 872 - 882 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] données lidar [Termes IGN] données localisées 3D [Termes IGN] filtre numérique [Termes IGN] modèle numérique de terrain [Termes IGN] morphologie mathématique [Termes IGN] semis de points [Termes IGN] sursol [Termes IGN] télémétrie laser aéroporté Résumé : (Auteur) Recent advances in airborne light detection and ranging (LIDAR) technology allow rapid and inexpensive measurements of topography over large areas. This technology is becoming a primary method for generating highresolution digital terrain models (DTMs) that are essential to numerous applications such as flood modeling and landslide prediction. Airborne LIDAR systems usually return a threedimensional cloud of point measurements from reflective objects scanned by the laser beneath the flight path. In order to generate a DTM, measurements from nonground features such as buildings, vehicles, and vegetation have to be classified and removed. In this paper, a progressive morphological filter was developed to detect nonground LIDAR measurements. By gradually increasing the window size of the filter and using elevation difference thresholds, the measurements of vehicles, vegetation, and buildings are removed, while ground data are preserved. Datasets from mountainous and flat urbanized areas were selected to test the progressive morphological filter. The results show that the filter can remove most of the nonground points effectively. Numéro de notice : A2003-182 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2003.810682 En ligne : https://doi.org/10.1109/TGRS.2003.810682 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22478 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
065-03041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

An algorithm for mapping burnt areas in Australia using SPOT-Vegetation data / D. Stroppiana in IEEE Transactions on geoscience and remote sensing, vol 41 n° 4 (April 2003)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 41 n° 4 (April 2003) . - pp 907 - 909 Titre : An algorithm for mapping burnt areas in Australia using SPOT-Vegetation data Type de document : Article/Communication Auteurs : D. Stroppiana, Auteur ; Kevin Tansey, Auteur ; J.M. Gregoire, Auteur ; J.M.C. Perrira, Auteur Année de publication : 2003 Article en page(s) : pp 907 - 909 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Australie [Termes IGN] carte thématique [Termes IGN] classification dirigée [Termes IGN] image SPOT-Végétation [Termes IGN] incendie de forêt [Termes IGN] occupation du sol [Termes IGN] zone sinistrée Résumé : (auteur) (Auteur) An algorithm has been developed to map burnt areas over the Australian continent using SPOTVEGETATION (VGT) SI satellite images. The algorithm is composed of a set of thresholds applied to each pixel's value of the VGT spectral channels, two spectral indices and their temporal difference. The threshold values have been derived by means of a supervised classification methodology based on the classification and regression trees algorithm. A procedure has also been developed specifically for pre-processing the daily SI images for burnt area mapping purposes. The final product is composed of ten day and monthly burnt area maps over Australia for the full year 2000. Numéro de notice : A2003-183 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2003.808898 En ligne : https://doi.org/10.1109/TGRS.2003.808898 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77395 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
065-03041	RAB	Revue	Centre de documentation	En réserve L003	Disponible