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Context-aware convolutional neural network for object detection in VHR remote sensing imagery / Yiping Gong in IEEE Transactions on geoscience and remote sensing, vol 58 n° 1 (January 2020)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 58 n° 1 (January 2020) . - pp 34 - 44 Titre : Context-aware convolutional neural network for object detection in VHR remote sensing imagery Type de document : Article/Communication Auteurs : Yiping Gong, Auteur ; Zhifeng Xiao, Auteur ; Xiaowei Tan, Auteur Année de publication : 2020 Article en page(s) : pp 34 - 44 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes descripteurs IGN] analyse contextuelle [Termes descripteurs IGN] classification par réseau neuronal convolutif [Termes descripteurs IGN] description multiniveau [Termes descripteurs IGN] détection d'objet [Termes descripteurs IGN] extraction de traits caractéristiques [Termes descripteurs IGN] image à très haute résolution [Termes descripteurs IGN] vision par ordinateur [Termes descripteurs IGN] zone d'intérêt Résumé : (auteur) Object detection in very-high-resolution (VHR) remote sensing imagery remains a challenge. Environmental factors, such as illumination intensity and weather, reduce image quality, resulting in poor feature representation and limited detection accuracy. To enrich the feature representation and mine the underlying context information among objects, this article proposes a context-aware convolutional neural network (CA-CNN) model for object detection that includes proposal generation, context feature extraction, feature fusion, and classification. During feature extraction, we propose integrating a context-regions-of-interests (Context-RoIs) mining layer into the CNN model and extracting context features by mapping Context-RoIs mined from the foreground proposals to multilevel feature maps. Finally, the context features extracted from multilevel layers are fused into a single layer, and the proposals represented by the fused features are classified by a softmax classifier. In this article, through numerous experiments, we thoroughly explore the influence of key factors, such as Context-RoIs, different feature scales, and different spatial context window sizes. Because of the end-to-end network design approach, our proposed model simultaneously maintains high efficiency and effectiveness. We conducted all model testing on the public NWPU VHR-10 data set. The experimental results demonstrate that our proposed CA-CNN model achieves significantly improved model performance and better detection results compared with the state-of-the-art methods. Numéro de notice : A2020-038 Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2019.2930246 date de publication en ligne : 23/09/2019 En ligne : http://doi.org/10.1109/TGRS.2019.2930246 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94492 [article]

Robust point cloud classification based on multi-level semantic relationships for urban scenes / Qing Zhu in ISPRS Journal of photogrammetry and remote sensing, vol 129 (July 2017)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 129 (July 2017) . - pp 86 - 102 Titre : Robust point cloud classification based on multi-level semantic relationships for urban scenes Type de document : Article/Communication Auteurs : Qing Zhu, Auteur ; Yuan Li, Auteur ; Han Hu, Auteur ; Bo Wu, Auteur Année de publication : 2017 Article en page(s) : pp 86 - 102 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes descripteurs IGN] champ aléatoire de Markov [Termes descripteurs IGN] classification [Termes descripteurs IGN] description multiniveau [Termes descripteurs IGN] exploration de données géographiques [Termes descripteurs IGN] relation sémantique [Termes descripteurs IGN] voxel [Termes descripteurs IGN] zone urbaine Résumé : (Auteur) The semantic classification of point clouds is a fundamental part of three-dimensional urban reconstruction. For datasets with high spatial resolution but significantly more noises, a general trend is to exploit more contexture information to surmount the decrease of discrimination of features for classification. However, previous works on adoption of contexture information are either too restrictive or only in a small region and in this paper, we propose a point cloud classification method based on multi-level semantic relationships, including point–homogeneity, supervoxel–adjacency and class–knowledge constraints, which is more versatile and incrementally propagate the classification cues from individual points to the object level and formulate them as a graphical model. The point–homogeneity constraint clusters points with similar geometric and radiometric properties into regular-shaped supervoxels that correspond to the vertices in the graphical model. The supervoxel–adjacency constraint contributes to the pairwise interactions by providing explicit adjacent relationships between supervoxels. The class–knowledge constraint operates at the object level based on semantic rules, guaranteeing the classification correctness of supervoxel clusters at that level. International Society of Photogrammetry and Remote Sensing (ISPRS) benchmark tests have shown that the proposed method achieves state-of-the-art performance with an average per-area completeness and correctness of 93.88% and 95.78%, respectively. The evaluation of classification of photogrammetric point clouds and DSM generated from aerial imagery confirms the method’s reliability in several challenging urban scenes. Numéro de notice : A2017-347 Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2017.04.022 En ligne : https://dx.doi.org/10.1016/j.isprsjprs.2017.04.022 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85611 [article]

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Intergeo 2015: Launching a New Era / Anonyme in GIM international [en ligne], vol 29 n° 10 (October 2015)

Public [article]  inGIM international [en ligne] > vol 29 n° 10 (October 2015) Titre : Intergeo 2015: Launching a New Era Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2015 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes descripteurs IGN] description multiniveau [Termes descripteurs IGN] innovation technologique Résumé : (auteur) The 21" edition of Intergeo was held in Stuttgart, Germany, from 15 to 17 September. More than 16,500 visitors from 90 countries attended the world's largest geomatics event to learn about the latest innovations and trends. Running in parallel to the trade show, which featured 549 exhibitors from 30 different countries, the traditional conference attracted around 1,200 delegates. The Intergeo organisers described geo-information as "the global language that all decision-makers understand," and this was reflected bath at the exhibition and during the conference. An abundance of solutions and technologies to help society advance were on display in Stuttgart. Numéro de notice : A2015-661 Thématique : GEOMATIQUE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78269 [article]

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Patterns multi-niveaux pour les SMA / Adrien Maudet (2015)

Public in JFSMA'15, 23es Journées Francophones sur les Systèmes Multi-Agents / Laurent Vercouter (2015) Titre : Patterns multi-niveaux pour les SMA Type de document : Article/Communication Auteurs : Adrien Maudet, Auteur ; Guillaume Touya , Auteur ; Cécile Duchêne , Auteur ; Sébastien Picault, Auteur Congrès : Congrès: JFSMA 2015, 23es journées francophones sur les systèmes multi-agents Environnements socio-techniques (12 - 19 juillet 2016; Rennes, France), Commanditaire Editeur : Toulouse : Cépaduès Année de publication : 2015 Importance : pp 19 28 Note générale : bibliographie Langues : Français (fre) Descripteur : [Termes descripteurs IGN] description multiniveau [Termes descripteurs IGN] modèle numérique [Termes descripteurs IGN] système multi-agents [Vedettes matières IGN] Généralisation Mots-clés libres : agents  multi-level Résumé : (auteur) Multi-level MAS have become a growing research topic in the last years. Due to the diversity of proposed models, we claim that recurrent situations have to be identified and characterized in an abstract way, in order to allow formal comparisons between existing models and to facilitate the design of new models. Therefore, we propose a first list of multi-level MAS patterns, coming from an attempt to unify several multi-level MAS models dedicated to a spatialized problem solving (cartographic generalization). The structure and dynamic of each pattern are formally described, and illustrated through examples drawn from the context of cartographic generalization and other MAS applications (especially in simulation). We also discuss the possibility to re-use and compose those patterns. Numéro de notice : C2015-030 Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésNat DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83262

Interactive cartographic route descriptions / Padraig Corcoran in Geoinformatica, vol 18 n° 1 (January 2014)  

Public [article]  inGeoinformatica > vol 18 n° 1 (January 2014) . - pp 1 - 26 Titre : Interactive cartographic route descriptions Type de document : Article/Communication Auteurs : Padraig Corcoran, Auteur ; Peter Mooney, Auteur ; Michela Bertolotto, Auteur Année de publication : 2014 Article en page(s) : pp 1 - 26 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes descripteurs IGN] base de données localisées [Termes descripteurs IGN] description multiniveau [Termes descripteurs IGN] information sémantique [Termes descripteurs IGN] représentation cartographique [Termes descripteurs IGN] représentation mentale spatiale [Termes descripteurs IGN] route [Termes descripteurs IGN] traitement interactif Résumé : (Auteur) Providing an adequate route description requires in-depth spatial knowledge of the route in question. In this article, we demonstrate that despite having travelled a route recently and having much experience of the area in question, an individual may lack such a degree of knowledge. Previous research and experience informs us that a map is an effective tool for bridging gaps in one’s spatial knowledge. In this article, we propose an approach, known as an Interactive Route Description, for defining and interpreting route descriptions interactively with a map. This approach is based on the concept of annotating the map in question and allows the aforementioned gap in one’s spatial knowledge to be bridged. An additional benefit of defining route descriptions in this way is that it facilitates automatic parsing and in turn offers many potential applications. One such application, illustrated in this paper, is the automatic transformation to other representations of the description such as turn-by-turn instructions. Numéro de notice : A2014-026 Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-013-0175-1 date de publication en ligne : 02/04/2013 En ligne : https://doi.org/10.1007/s10707-013-0175-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32931 [article]

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Multi-level representation of terrain features on a contour map / Eric Guilbert in Geoinformatica, vol 17 n° 2 (April 2013)  

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Interactions between levels in an agent oriented model for generalisation / Adrien Maudet (2013) 

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Descriptive plans: An approach to administrative descriptions by Ontario's ministry of natural resources / R. Martin in Geomatica, vol 66 n° 3 (September 2012)

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L’approche participative, incrémentale et itérative en modélisation : un changement profond de cadre méthodologique. Exemple d’une modélisation multiniveau pour l’élaboration de politiques foncières au Sahel / P. D' Aquino in Revue internationale de géomatique, vol 22 n° 1 (mars - mai 2012)

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Pocket eRelevé : nouvelle approche de collecte de données sur le terrain / Gueyraud Rolland Kipré in Géomatique expert, n° 69 (juin - juillet 2009)

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A graph cut optimization guided by 3D-features for surface height recovery / Nesrine Chehata in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 2 (March - April 2009)  

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Analyse multiniveau des espaces urbains / Annabelle Boffet in Revue internationale de géomatique, vol 12 n° 2 (juin - août 2002)  

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Petites leçons de géographie / C. Allmang (2001)

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