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Unmixing polarimetric radar images based on land cover type before target decomposition / Sébastien Giordano (2014)
Titre : Unmixing polarimetric radar images based on land cover type before target decomposition Type de document : Article/Communication Auteurs : Sébastien Giordano , Auteur ; Grégoire Mercier, Auteur ; Jean-Paul Rudant , Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2014 Conférence : IGARSS 2014, International Geoscience And Remote Sensing Symposium 13/07/2014 18/07/2014 Québec Québec - Canada Proceedings IEEE Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse des mélanges spectraux
[Termes IGN] image radar
[Termes IGN] matrice de covariance
[Termes IGN] polarimétrie radarRésumé : (auteur) A new method for unmixing radar polarimetric images with optical images is proposed. It was found that the polarimetric covariance matrix can be unmixed considering a linear model. As a result, this model is used to produce unmixed covariance matrices based on land cover types. We hope to prove that this unmixing of the polarimetric information produce greater information for land cover classification. Numéro de notice : C2014-043 Affiliation des auteurs : LASTIG MATIS+Ext (2012-2019) Thématique : IMAGERIE/INFORMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/IGARSS.2014.6947055 Date de publication en ligne : 06/11/2014 En ligne : https://doi.org/10.1109/IGARSS.2014.6947055 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99588
Titre : Updating the new French national land cover database Type de document : Article/Communication Auteurs : Adrien Gressin , Auteur ; Clément Mallet , Auteur ; Nicole Vincent, Auteur ; Nicolas Paparoditis , Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2014 Conférence : IGARSS 2014, International Geoscience And Remote Sensing Symposium 13/07/2014 18/07/2014 Québec Québec - Canada Proceedings IEEE Importance : pp 3534 - 3537 Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] approche hiérarchique
[Termes IGN] base de données d'occupation du sol
[Termes IGN] base de données localisées IGN
[Termes IGN] BD Topo
[Termes IGN] détection de changement
[Termes IGN] image à très haute résolution
[Termes IGN] image Pléiades-HR
[Termes IGN] mise à jour de base de donnéesRésumé : (auteur) Land-Cover databases (LC-DB) are very useful for environmental purposes, but need to be regularly updated to provide robust and instructive spatial indicators. Moreover, very high resolution satellite images allow to cover large areas regularly. Thus, automatic methods have to been developed to tackle this issue. In this paper, a hierarchical inspection method is proposed to both update and extend LC-DB using satellite image. This framework is successfully applied on the French National LC-DB using a single VHR satellite image. Numéro de notice : C2014-023 Affiliation des auteurs : LASTIG MATIS+Ext (2012-2019) Autre URL associée : vers HAL Thématique : IMAGERIE/INFORMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/IGARSS.2014.6947245 Date de publication en ligne : 06/11/2014 En ligne : http://dx.doi.org/10.1109/IGARSS.2014.6947245 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92025 Documents numériques
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Updating the new French national... - pdf auteurAdobe Acrobat PDF 3D tree reconstruction from simulated small footprint waveform lidar / Jiaying Wu in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 12 (December 2013)
[article]
Titre : 3D tree reconstruction from simulated small footprint waveform lidar Type de document : Article/Communication Auteurs : Jiaying Wu, Auteur ; Kerry Cawse-Nicholson, Auteur ; Jan Van Aardt, Auteur Année de publication : 2013 Article en page(s) : pp 1147 - 1157 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] arbre (flore)
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] feuille (végétation)
[Termes IGN] forme d'onde
[Termes IGN] houppier
[Termes IGN] inventaire forestier (techniques et méthodes)
[Termes IGN] Populus (genre)
[Termes IGN] reconstruction d'objet
[Termes IGN] squelettisation
[Termes IGN] tronc
[Termes IGN] variation saisonnièreRésumé : (Auteur) Lidar-based 3D tree reconstruction enables the retrieval of detailed tree structure; however, many existing methods are based on high-density discrete return lidar datasets. In this paper, we propose the use of small footprint waveform lidar data to achieve branch-level tree reconstruction for both leaf-off and leaf-on conditions. The DIRSIG simulation environment was used for algorithm validation purposes. Leaf-off data served as reference, and leaf-on reconstruction for a particular tree resulted in an average branch length difference of 0.07 m and an average angular difference of approximately 6 degrees for both tilt and azimuth angles. Compared to in situ methods this approach may be used by an airborne system for accurate estimation of forest biomass, forest inventory, land degradation, etc. in large scale applications. Furthermore, since this approach can also be applied on leaf-on trees, the tree skeleton characterization eventually can be conducted year round and will be less dependent on seasonal changes. Numéro de notice : A2013-691 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.14358/PERS.79.12.1147 En ligne : https://doi.org/10.14358/PERS.79.12.1147 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32827
in Photogrammetric Engineering & Remote Sensing, PERS > vol 79 n° 12 (December 2013) . - pp 1147 - 1157[article]Automated detection of buildings from single VHR multispectral images using shadow information and graph cuts / Ali Ozgun Ok in ISPRS Journal of photogrammetry and remote sensing, vol 86 (December 2013)
[article]
Titre : Automated detection of buildings from single VHR multispectral images using shadow information and graph cuts Type de document : Article/Communication Auteurs : Ali Ozgun Ok, Auteur Année de publication : 2013 Article en page(s) : pp 21 - 40 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] détection de régions
[Termes IGN] détection du bâti
[Termes IGN] image à très haute résolution
[Termes IGN] image Geoeye
[Termes IGN] image multibande
[Termes IGN] ombre
[Termes IGN] segmentation d'imageRésumé : (Auteur) In this study, we propose a novel methodology for automated detection of buildings from single very-high-resolution (VHR) multispectral images. The methodology uses the principal evidence of buildings: the shadows that they cast. We model the directional spatial relationship between buildings and their shadows using a recently proposed probabilistic landscape approach. An effective shadow post-processing step is developed to focus on landscapes that belong to building regions. The building regions are detected using an original two-level graph theory approach. In the first level, each shadow region is addressed separately, and building regions are identified via iterative graph cuts designed in two-label partitioning. The final building regions are characterised in a second level in which the previously labelled building regions are subjected to a single-step multi-label graph optimisation performed over the entire image domain. Numerical assessments performed on 16 VHR GeoEye-1 images demonstrate that the proposed approach is highly robust and reliable. A distinctive specialty of the proposed approach is its applicability to buildings with diverse characteristics as well as to VHR images with significantly different illumination properties. Numéro de notice : A2013-703 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.09.004 En ligne : https://doi.org/10.1016/j.isprsjprs.2013.09.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32839
in ISPRS Journal of photogrammetry and remote sensing > vol 86 (December 2013) . - pp 21 - 40[article]Cartes en mains contre Lili la tigresse / Françoise de Blomac in DécryptaGéo le mag, n° 152 (01/12/2013)
[article]
Titre : Cartes en mains contre Lili la tigresse Type de document : Article/Communication Auteurs : Françoise de Blomac, Auteur Année de publication : 2013 Article en page(s) : pp 16 - 17 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] carte thématique
[Termes IGN] couche thématique
[Termes IGN] épidémie
[Termes IGN] Insecta
[Termes IGN] Languedoc-Roussillon
[Termes IGN] milieu urbain
[Termes IGN] occupation du sol
[Termes IGN] orthoimage
[Termes IGN] partition d'image
[Termes IGN] QGIS
[Termes IGN] risque sanitaire
[Termes IGN] vulnérabilitéRésumé : (Auteur) Même si le paludisme ne concerne plus que quelques zones en Guyane, le moustique tigre a pris pied dans la métropole et les épidémies de dengue et de chikungunya frappent durement certains territoires d'outre-mer. Enjeux économiques, de qualité de vie, de santé publique, mais également environnementaux doivent être pris en compte dans la lutte contre les moustiques. Dans le cadre du programme "lutte contre les moustiques nuisants et vecteurs", une extension Qgis permettant de connaître les risques liés au moustique tigre en milieu urbain a été développée par SIRS et le CIRAD. Numéro de notice : A2013-636 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32772
in DécryptaGéo le mag > n° 152 (01/12/2013) . - pp 16 - 17[article]Réservation
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