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A novel MKL model of integrating LiDAR data and MSI for urban area classification / Yanfeng Gu in IEEE Transactions on geoscience and remote sensing, vol 53 n° 10 (October 2015)
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Titre : A novel MKL model of integrating LiDAR data and MSI for urban area classification Type de document : Article/Communication Auteurs : Yanfeng Gu, Auteur ; Qingwang Wang, Auteur ; Xiuping Jia, Auteur ; Jón Alti, Auteur Année de publication : 2015 Article en page(s) : pp 5312 - 5326 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] apprentissage automatique
[Termes IGN] classificateur
[Termes IGN] classification à base de connaissances
[Termes IGN] classification automatique
[Termes IGN] données lidar
[Termes IGN] image multibande
[Termes IGN] image spectrale
[Termes IGN] milieu urbainRésumé : (Auteur) A novel multiple-kernel learning (MKL) model is proposed for urban classification to integrate heterogeneous features (HF-MKL) from two data sources, i.e., spectral images and LiDAR data. The features include spectral, spatial, and elevation attributes of urban objects from the two data sources. With these heterogeneous features (HFs), the new MKL model is designed to carry out feature fusion that is embedded in classification. First, Gaussian kernels with different bandwidths are used to measure the similarity of samples on each feature at different scales. Then, these multiscale kernels with different features are integrated using a linear combination. In the combination, the weights of the kernels with different features are determined by finding a projection based on the maximum variance. This way, the discriminative ability of the HFs is exploited at different scales and is also integrated to generate an optimal combined kernel. Finally, the optimization of the conventional support vector machine with this kernel is performed to construct a more effective classifier. Experiments are conducted on two real data sets, and the experimental results show that the HF-MKL model achieves the best performance in terms of classification accuracies in integrating the HFs for classification when compared with several state-of-the-art algorithms. Numéro de notice : A2015-752 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2015.2421051 Date de publication en ligne : 07/05/2015 En ligne : https://doi.org/10.1109/TGRS.2015.2421051 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78742
in IEEE Transactions on geoscience and remote sensing > vol 53 n° 10 (October 2015) . - pp 5312 - 5326[article]Réservation
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Titre : Open data needs open standards Type de document : Article/Communication Auteurs : Denise McKenzie, Auteur Année de publication : 2015 Article en page(s) : pp 22 - 24 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] données ouvertes
[Termes IGN] interopérabilité
[Termes IGN] standard OGCNuméro de notice : A2015-788 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78918
in Position > n° 79 (October - November 2015) . - pp 22 - 24[article]Planning unobstructed paths in traffic-aware spatial networks / Shuo Shang in Geoinformatica, vol 19 n° 4 (October - December 2015)
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Titre : Planning unobstructed paths in traffic-aware spatial networks Type de document : Article/Communication Auteurs : Shuo Shang, Auteur ; Jianjun Liu, Auteur ; Kai Zheng, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 723 - 746 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] accessibilité
[Termes IGN] calcul d'itinéraire
[Termes IGN] gestion des itinéraires
[Termes IGN] itinéraire
[Termes IGN] objet mobile
[Termes IGN] trafic routier
[Termes IGN] vitesseMots-clés libres : traffic-aware spatial network Résumé : (auteur) Route planning and recommendation have received significant attention in recent years. In this light, we study a novel problem of planning unobstructed paths in traffic-aware spatial networks (TAUP queries) to avoid potential traffic congestions. We propose two probabilistic TAUP queries: (1) a time-threshold query like “what is the path from the check-in desk to the flight SK 1217 with the minimum congestion probability to take at most 45 minutes?”, and (2) a probability-threshold query like “what is the fastest path from the check-in desk to the flight SK 1217 whose congestion probability is less than 20 %?”. These queries are mainly motivated by indoor space applications, but are also applicable in outdoor spaces. We believe that these queries are useful in some popular applications, such as planning unobstructed paths for VIP bags in airports and planning convenient routes for travelers. The TAUP queries are challenged by two difficulties: (1) how to model the traffic awareness in spatial networks practically, and (2) how to compute the TAUP queries efficiently under different query settings. To overcome these challenges, we construct a traffic-aware spatial network G t a (V, E) by analyzing uncertain trajectories of moving objects. Based on G t a (V, E), two efficient algorithms are developed to compute the TAUP queries. The performances of TAUP queries are verified by extensive experiments on real and synthetic spatial data. Numéro de notice : A2015--035 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-015-0227-9 Date de publication en ligne : 10/04/2015 En ligne : http://dx.doi.org/10.1007/s10707-015-0227-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81121
in Geoinformatica > vol 19 n° 4 (October - December 2015) . - pp 723 - 746[article]Spatial information divergence: using global and local indices to compare geographical masks applied to crime data / Ourania Kounad in Transactions in GIS, vol 19 n° 5 (October 2015)
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Titre : Spatial information divergence: using global and local indices to compare geographical masks applied to crime data Type de document : Article/Communication Auteurs : Ourania Kounad, Auteur ; Michael Leitner, Auteur Année de publication : 2015 Article en page(s) : pp 737 – 757 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse comparative
[Termes IGN] cartographie thématique
[Termes IGN] criminalité
[Termes IGN] information géographique
[Termes IGN] masque géographique
[Termes IGN] système d'information géographique
[Termes IGN] zonage (urbanisme)Résumé : (auteur) Advances in Geographic Information Science (GISc) and the increasing availability of location data have facilitated the dissemination of crime data and the abundance of crime mapping websites. However, data holders acknowledge that when releasing sensitive crime data there is a risk of compromising the victims' privacy. Hence, protection methodologies are primarily applied to the data to ensure that individual privacy is not violated. This article addresses one group of location protection methodologies, namely geographical masks that are applicable for crime data representations. The purpose is to identify which mask is the most appropriate for crime incident visualizations. A global divergence index (GDi) and a local divergence index (LDi) are developed to compare the effects that these masks have on the original crime point pattern. The indices calculate how dissimilar the spatial information of the masked data is from the spatial information of the original data in regards to the information obtained via spatial crime analysis. The results of the analysis show that the variable radius mask and the donut geomask should be primarily used for crime representations as they produce less spatial information divergence of the original crime point pattern than the alternative local random rotation mask and circular mask. Numéro de notice : A2015-685 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12125 En ligne : https://doi.org/10.1111/tgis.12125 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78330
in Transactions in GIS > vol 19 n° 5 (October 2015) . - pp 737 – 757[article]Surveying a mountain highway with UAS : getting accurate results in a rough area / Matteo Luccio in Geoinformatics, vol 18 n° 7 (October - November 2015)
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Titre : Surveying a mountain highway with UAS : getting accurate results in a rough area Type de document : Article/Communication Auteurs : Matteo Luccio, Auteur Année de publication : 2015 Article en page(s) : pp 6 - 8 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] autoroute
[Termes IGN] drone
[Termes IGN] Macédoine
[Termes IGN] prise de vue aérienneNuméro de notice : A2015-780 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78875
in Geoinformatics > vol 18 n° 7 (October - November 2015) . - pp 6 - 8[article]GNSS satellite geometry and attitude models / Oliver Montenbruck in Advances in space research, vol 56 n° 6 (September 2015)
PermalinkRoads and cities of 18th century France [data descriptor] / Julien Perret in Scientific data, n° 2 ([15/09/2015])
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Permalink3D model construction in an urban environment from sparse LiDAR points and aerial photos : a statistical approach / Xuebin Wei in Geomatica, vol 69 n° 3 (september 2015)
PermalinkAverage transport accessibilty of the slovenian municipalities to the nearest motorway or expressway access point / Samo Drobne in Geodetski vestnik, vol 59 n° 3 (September - November 2015)
PermalinkLe contrôle de la végétation dans les emprises ferroviaires : une approche multi-scalaire / Flavien Viguier in XYZ, n° 144 (septembre - novembre 2015)
PermalinkEtude de l'homogénéité d'une surface non régulière / Claire Blondeau in XYZ, n° 144 (septembre - novembre 2015)
PermalinkExploring alternative map products to enhance transportation option awareness / Jessica V. Fayne in Cartography and Geographic Information Science, Vol 42 n° 4 (September 2015)
PermalinkExploring the decision tree method for modelling urban land use change / Mileva Samardžić-Petrović in Geomatica, vol 69 n° 3 (september 2015)
PermalinkFormalisation des interactions spatiales dans les modèles multi-agents. Essai d’analyse comparative / Hélène Mathian in Revue internationale de géomatique, vol 25 n° 3 (septembre - novembre 2015)
PermalinkHierarchical polygonization for generating and updating lane-based road network information for navigation from road markings / Anthony G.O. Yeh in International journal of geographical information science IJGIS, vol 29 n° 9 (September 2015)
PermalinkInvariant spatial information in sketch maps — a study of survey sketch maps of urban areas / Jia Wang in Journal of Spatial Information Science, JoSIS, n° 11 (September 2015)
PermalinkMethodological framework for shrinking cities case study research: northwest region of Bosnia and Herzegovina / Tijana M. Vujičić, in Geodetski vestnik, vol 59 n° 3 (September - November 2015)
PermalinkOutil SIG et processus d'analyse multicritère semi-automatisé pour l'aménagement du territoire : Application dans le cadre de la révision du Scot des Vosges centrales (2ème partie) / Matthieu Chevalier in Géomatique expert, n° 106 (septembre - octobre 2015)
PermalinkPrediction of traffic counts using statistical and neural network models / Abul Kalam Azad in Geomatica, vol 69 n° 3 (september 2015)
PermalinkPrendre les espaces de temps pour maîtriser les impacts diffus générés par les grandes infrastructures de transport terrestre (ITT) sur la biodiversité / Jean-Marc Fourès in VertigO, vol 15 n° 2 (septembre 2015)
PermalinkProposed design of local 2D geodetic network for the construction of the tunnel part of the Belgrade metro / Marija Savanović, in Geodetski vestnik, vol 59 n° 3 (September - November 2015)
PermalinkReprésenter la proximité temporelle : cartographie des temps d'accès à pied aux aménités du quotidien dans l'agglomération rennaise / Catherine Dameron in Cartes & Géomatique, n° 225 (septembre 2015)
PermalinkRoutes visualization: Automated placement of multiple route symbols along a physical network infrastructure / Jules Teulade-Denantes in Journal of Spatial Information Science, JoSIS, n° 11 (September 2015)
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PermalinkSocial media-related geographic information in the context of strategic environmental assessment of municipal masterplans: A case study concerning Sardinia (Italy) / Roberta Floris in Future internet, vol 7 n° 3 (September 2015)
PermalinkStreet environment change detection from mobile laser scanning point clouds / Wen Xiao in ISPRS Journal of photogrammetry and remote sensing, vol 107 (September 2015)
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