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Titre : Diffusion anisotrope et inpainting d’orthophotographies LiDAR mobile Type de document : Article/Communication Auteurs : Pierre Biasutti , Auteur ; Jean-François Aujol, Auteur ; Mathieu Brédif , Auteur ; Aurélie Bugeau, Auteur Editeur : Association française pour la reconnaissance et l'interprétation des formes AFRIF Année de publication : 2016 Conférence : RFIA 2016, 20e conférence Reconnaissance des Formes et Intelligence Artificielle 27/06/2016 01/07/2016 Clermond-Ferrand France OA Proceedings Importance : 2 p. Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] anisotropie
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] inpainting
[Termes IGN] occultation du signal
[Termes IGN] orthoimage
[Termes IGN] réflectance
[Termes IGN] route
[Termes IGN] semis de pointsMots-clés libres : ANR-10-IDEX-03-02 Résumé : (auteur) Cet article présente un processus pour la production jointe d’orthophotographie de réflectance et de hauteur à très grande résolution (1cm) à partir d’un levé laser mobile. La projection verticale du nuage de points LiDAR sur une grille de pixels 2D, après filtrage des points du sol, génère deux images éparses et bruitées (réflectance et de hauteur). Nous proposons d’en dériver une image dense par diffusion anisotrope couplée à un débruitage par régularisation TVL 1. De plus, nous adaptons une méthode d’inpainting afin de combler les zones d’occultation en tirant parti de la reconstruction couplée réflectance/hauteur et d’un a priori d’alignement entre les structures à inpainter. Numéro de notice : C2016-017 Affiliation des auteurs : LASTIG MATIS+Ext (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84606 Documents numériques
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Diffusion anisotrope et inpainting - pdf auteurAdobe Acrobat PDF Empirical determination of geometric parameters for selective omission in a road network / Qi Zhou in International journal of geographical information science IJGIS, vol 30 n° 1-2 (January - February 2016)
[article]
Titre : Empirical determination of geometric parameters for selective omission in a road network Type de document : Article/Communication Auteurs : Qi Zhou, Auteur ; Zhilin Li, Auteur Année de publication : 2016 Article en page(s) : pp 263 - 299 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] généralisation cartographique automatisée
[Termes IGN] généralisation géométrique (de visualisation)
[Termes IGN] Hong-Kong
[Termes IGN] modèle empirique
[Termes IGN] Nouvelle-Zélande
[Termes IGN] réseau routier
[Termes IGN] visualisation cartographique
[Vedettes matières IGN] GénéralisationRésumé : (auteur) Selective omission in a road network is a necessary operation for road network generalization. Most existing selective omission approaches involve one or two geometric parameters at a specific scale to determine which roads should be retained or eliminated. This study proposes an approach for determining the empirical threshold for such a parameter. The idea of the proposed approach is to first subdivide a large road network, and then to use appropriate threshold(s) obtained from one or several subdivisions to infer an appropriate threshold for the large one. A series of experiments was carried out to validate the proposed approach. Specifically, the road network data for New Zealand and Hong Kong at different scales (ranging from 1:50,000 to 1:250,000) were used as the experimental data, and subdivided according to different modes (i.e. administrative boundary data, a regular grid of different sizes, different update years, and different road network patterns). Not only geometric parameters, but also structural and hybrid parameters of existing selective omission approaches were involved in the testing. The experimental results show that although the most appropriate thresholds obtained from different subdivisions are not always the same, in most cases, the appropriate threshold ranges often overlap, especially for geometric parameters, and they also overlap with those obtained from the large road network data. This finding is consistent with the use of different subdivision modes, which verifies the effectiveness of the proposed approach. Several issues involving the use of the proposed approach are also addressed. Numéro de notice : A2016-088 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1085538 En ligne : https://doi.org/10.1080/13658816.2015.1085538 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79873
in International journal of geographical information science IJGIS > vol 30 n° 1-2 (January - February 2016) . - pp 263 - 299[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 079-2016011 RAB Revue Centre de documentation En réserve L003 Disponible A function-based linear map symbol building and rendering method using shader language / Songshan Yue in International journal of geographical information science IJGIS, vol 30 n° 1-2 (January - February 2016)
[article]
Titre : A function-based linear map symbol building and rendering method using shader language Type de document : Article/Communication Auteurs : Songshan Yue, Auteur ; Jianshun Yang, Auteur ; Min Chen, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 143 - 167 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] communication cartographique
[Termes IGN] détail topographique
[Termes IGN] figuré linéaire
[Termes IGN] rendu réaliste
[Termes IGN] route
[Termes IGN] signe conventionnel
[Termes IGN] Styled Layer Descriptor
[Termes IGN] symbole graphique
[Termes IGN] visée oblique
[Vedettes matières IGN] CartologieRésumé : (auteur) Maps are widely used to visualize geo-information so that map users can develop related understandings about the real world. Such a process for communicating information is largely dependent on the rendering of map elements using different symbols (points and linear and area symbols). To meet the demand of more dynamic and comprehensive visualization in map rendering, it is essential to improve the rendering efficiency. This paper focuses on these research topics, especially the difficulty in constructing and drawing linear map symbols. By employing shader language, a function-based linear symbol building and rendering method is presented in this paper. The basic idea of this function-based method is to build a map-rendering solution that employs graphic processing unit (GPU) acceleration technology to improve the rendering efficiency. A ‘function’ is used to represent the algorithm that draws certain simple or complex linear map symbols. This function reflects the structure of a linear map symbol (describing the symbol construction information) and also the rendering process of the symbolized linear map elements (handled on a per-pixel basis by the shader program). Based on the Open Geospatial Consortium (OGC), Styled Layer Descriptor (SLD) specifications, four basic line types (i.e., solid lines, dashed lines, gradient color lines, and transition lines) are implemented in the proposed method, and the implementation of line markers, line joins and line caps is also discussed. Three experiments are conducted to demonstrate improvements in map rendering. The results show that a variety of linear map symbols can be constructed in a uniform way, which suggests that the proposed method addresses the difficulty in drawing linear map symbols. With this method, the efficiency of rendering linear map elements is substantially improved compared to using the graphics device interface plus (GDI+) and anti-grain geometry (AGG) methods; it also provides an applicable approach for developing map rendering systems. Using this function-based concept, the complexity of building linear map symbols and drawing linear map elements can be decreased. Numéro de notice : A2016-086 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1077964 En ligne : https://doi.org/10.1080/13658816.2015.1077964 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79871
in International journal of geographical information science IJGIS > vol 30 n° 1-2 (January - February 2016) . - pp 143 - 167[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 079-2016011 RAB Revue Centre de documentation En réserve L003 Disponible SPLZ: An efficient algorithm for single source shortest path problem using compression method / Jingwei Sun in Geoinformatica, vol 20 n° 1 (January - March 2016)
[article]
Titre : SPLZ: An efficient algorithm for single source shortest path problem using compression method Type de document : Article/Communication Auteurs : Jingwei Sun, Auteur ; Guangzhong Sun, Auteur Année de publication : 2016 Article en page(s) : pp 1 - 18 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] chemin le plus court, algorithme du
[Termes IGN] compression de données
[Termes IGN] réseau routier
[Termes IGN] traitement de données localiséesRésumé : (auteur) Efficient solution of the single source shortest path (SSSP) problem on road networks is an important requirement for numerous real-world applications. This paper introduces an algorithm for the SSSP problem using compression method. Owning to precomputing and storing all-pairs shortest path (APSP), the process of solving SSSP problem is a simple lookup of a little data from precomputed APSP and decompression. APSP without compression needs at least 1TB memory for a road network with one million vertices. Our algorithm can compress such an APSP into several GB, and ensure a good performance of decompression. In our experiment on a dataset about Northwest USA (with 1.2 millions vertices), our method can achieve about three orders of magnitude faster than Dijkstra algorithm based on binary heap. Numéro de notice : A2016-365 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-015-0229-7 En ligne : http://dx.doi.org/10.1007/s10707-015-0229-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81128
in Geoinformatica > vol 20 n° 1 (January - March 2016) . - pp 1 - 18[article]A wildlife movement approach to optimally locate wildlife crossing structures / Rebecca W. Loraamm in International journal of geographical information science IJGIS, vol 30 n° 1-2 (January - February 2016)
[article]
Titre : A wildlife movement approach to optimally locate wildlife crossing structures Type de document : Article/Communication Auteurs : Rebecca W. Loraamm, Auteur ; Joni A. Downs, Auteur Année de publication : 2016 Article en page(s) : pp 74 - 88 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] croisement spatial
[Termes IGN] faune
[Termes IGN] migration animale
[Termes IGN] noeud
[Termes IGN] optimisation (mathématiques)
[Termes IGN] route
[Termes IGN] Time-geographyRésumé : (auteur) Transportation networks negatively impact wildlife populations by limiting the physical movement of the individual animal. In extreme cases road presence can lead to collisions between vehicles and animals, resulting in direct mortality if an animal attempts to cross the road. Crossing structures are one commonly used method for reducing wildlife–vehicle collisions. However, limited funding often reduces the amount of structures that may be constructed in practice. Therefore, areas that have the highest probability for animal interactions with roads should be targeted for locating new structures to provide the best possible outcome. This research uses a probabilistic time-geographic strategy coupled with a site selection phase handled by a classical optimization model to site wildlife crossing structures. To achieve optimal site selection, crossing locations are first identified where wildlife frequently cross roads, and then a maximum covering location problem is applied to these areas as demand nodes. The objective is to cover the largest area having the highest probability of interaction given a finite number of crossing structures available to be located. Coverage is defined in terms of fencing distance associated with a particular structure. The approach was demonstrated using Florida panther telemetry data identifying potential crossing structures across two counties in south Florida. The maximal covering location problem (MCLP) was solved for four coverage distances using radio telemetry tracking data, which captured frequent contact with roads. The results identify that the most effective coverage distance is 2000 m, which incrementally covers more total animal–road interaction probability than that of lower fencing distances in the case of the Florida panther. The results illustrate how this new time-geographic approach, combined with location modeling, measures animal–road interactions probabilistically for finding the optimum placement of wildlife crossing structures. Numéro de notice : A2016-011 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1083995 En ligne : http://dx.doi.org/10.1080/13658816.2015.1083995 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79332
in International journal of geographical information science IJGIS > vol 30 n° 1-2 (January - February 2016) . - pp 74 - 88[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 079-2016011 RAB Revue Centre de documentation En réserve L003 Disponible A hybrid link-node approach for finding shortest paths in road networks with turn restrictions / Qingquan Li in Transactions in GIS, vol 19 n° 6 (December 2015)PermalinkRoad vectorisation from high-resolution imagery based on dynamic clustering using particle swarm optimisation / Fateme Ameri in Photogrammetric record, vol 30 n° 152 (December 2015 - February 2016)PermalinkThe impact of planning on pedestrian movement: contrasting pedestrian movement models in pre-modern and modern neighborhoods in Israel / Itzhak Omer in International journal of geographical information science IJGIS, vol 29 n° 12 (December 2015)PermalinkStudy of the geometry effect on land surface temperature retrieval in urban environment / Jinxin Yanga in ISPRS Journal of photogrammetry and remote sensing, vol 109 (November 2015)PermalinkDriving intelligent transport / Danielle Mulligan in Position, n° 79 (October - November 2015)PermalinkImpact de l’anisotropie du milieu dans les études de profilage géographique / Marie Trotta in Revue internationale de géomatique, vol 25 n° 4 (octobre - décembre 2015)PermalinkSurveying a mountain highway with UAS : getting accurate results in a rough area / Matteo Luccio in Geoinformatics, vol 18 n° 7 (October - November 2015)PermalinkRoads and cities of 18th century France [data descriptor] / Julien Perret in Scientific data, n° 2 ([15/09/2015])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)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)PermalinkStreet environment change detection from mobile laser scanning point clouds / Wen Xiao in ISPRS Journal of photogrammetry and remote sensing, vol 107 (September 2015)PermalinkRoad orthophoto/DTM generation from mobile laser scanning / Bruno Vallet in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W5 (October 2015)PermalinkStreetgen: in-base procedural-based road generation / Rémi Cura in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W5 (October 2015)PermalinkMatching authority and VGI road networks using an extended node-based matching algorithm / Ehsan Abdolmajidi in Geo-spatial Information Science, vol 18 n° 2 (August 2015)PermalinkStreet smart: 3-D city mapping and modeling for positioning with multi-GNSS / Li-Ta Hsu in GPS world, vol 26 n° 7 (July 2015)PermalinkContext-aware abstraction and generalization of street networks: two cognitively engineered user-oriented approaches using network Voronoi diagrams / Mahdi Rahimi in Geocarto international, vol 30 n° 5 - 6 (May - July 2015)PermalinkEconomie de temps et d'argent grâce à des analyses d'états combinées : Superposition de l'analyse de l'état des conduites des eaux et des eaux usées et des réseaux routiers / Daniel Fluri in Géomatique suisse, vol 113 n° 5 (mai 2015)PermalinkPattern-mining approach for conflating crowdsourcing road networks with POIs / Bisheng Yang in International journal of geographical information science IJGIS, vol 29 n° 5 (May 2015)PermalinkA dilution-matching-encoding compaction of trajectories over road networks / Ranit Gotsman in Geoinformatica, vol 19 n° 2 (April - June 2015)PermalinkAn algorithm for automated estimation of road roughness from mobile laser scanning data / Pankaj Kumar in Photogrammetric record, vol 30 n° 149 (March - May 2015)PermalinkAn aggregated graph to qualify historical spatial networks using temporal patterns detection / Benoit Costes (2015)PermalinkCas d'utilisation des cartes de randonnées avec représentation à symboles multiples / Olivia Gautrais (2015)PermalinkEfficient continuous top-k spatial keyword queries on road networks / Long Guo in Geoinformatica, vol 19 n° 1 (January - March 2015)PermalinkL'Ingénieur artiste / Antoine Picon (2015)PermalinkPermalinkA novel approach for generating routable road maps from vehicle GPS traces / Jing Wang in International journal of geographical information science IJGIS, vol 29 n° 1 (January 2015)PermalinkPermalinkPermalinkUn système d'information géographique pour le suivi d'objets historiques urbaines à travers l'espace et le temps / Bertrand Duménieu (2015)PermalinkUn monde à part / Françoise de Blomac in DécryptaGéo le mag, n° 161 (01/11/2014)PermalinkA Pattern-based approach for matching nodes in heterogeneous urban road networks / Yang Bisheng in Transactions in GIS, vol 18 n° 5 (October 2014)PermalinkTime-geographic derivation of feasible co-presence opportunities from network-constrained episodic movement data / Mathias Versichele in Transactions in GIS, vol 18 n° 5 (October 2014)PermalinkRoad network selection for medium scales using an extended stroke-mesh combination algorithm / Stefan A. Benz in Cartography and Geographic Information Science, vol 41 n° 4 (September 2014)PermalinkRoad hierarchy with integration of attributes using fuzzy-AHP / Fatih Gülgen in Geocarto international, vol 29 n° 5 - 6 (August - October 2014)PermalinkLa représentation des routes sur les cartes anciennes / Bernard Bèzes in Supplément à la revue archéologique du centre de la France, n° 52 (2014)PermalinkA comparative study of two approaches for supporting optimal network location queries / Parisa Ghaemi in Geoinformatica, vol 18 n° 2 (April 2014)PermalinkCollaborative signal processing: More receiver nodes brings ubiquitous navigation closer / Andrey Soloviev in GPS world, vol 25 n° 2 (February 2014)PermalinkStand structure and plant species occurrence in forest edge habitat along different aged roads on Okinawa Island, southwestern Japan / Tsutomu Enoki in Journal of Forest Research, vol 19 n° 1 (February 2014)PermalinkUse of artificial neural networks for selective omission in updating road networks / Qi Zhou in Cartographic journal (the), vol 51 n° 1 (February 2014)PermalinkL'atlas de Trudaine / Stéphane Blond (2014)PermalinkCartographie routière navigable sur Tahiti : Référentiel routier / Anna Mouget (2014)PermalinkEffective mix-zone anonymization techniques for mobile travelers / Balaji Palanisamy in Geoinformatica, vol 18 n° 1 (January 2014)PermalinkPermalinkIndividual road generalisation in the 1997-2000 AGENT European project / Cécile Duchêne (August 2014)PermalinkInteractive cartographic route descriptions / Padraig Corcoran in Geoinformatica, vol 18 n° 1 (January 2014)Permalink