|
|
[n° ou bulletin]
est un bulletin de ISPRS International journal of geo-information / International society for photogrammetry and remote sensing (1980 -) (2012 -) 
[n° ou bulletin]
|  |
Dépouillements
Ajouter le résultat dans votre panier3D WebGIS : from visualization to analysis. An efficient browser-based 3D line-of-sight analysis / Michael Auer in ISPRS International journal of geo-information, vol 7 n° 7 (July 2018)
Titre : 3D WebGIS : from visualization to analysis. An efficient browser-based 3D line-of-sight analysis Type de document : Article/Communication Auteurs : Michael Auer, Auteur ; Alexander Zipf, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] analyse spatiale
[Termes IGN] base de données localisées 3D
[Termes IGN] HTML
[Termes IGN] ligne de visée
[Termes IGN] optimisation (mathématiques)
[Termes IGN] visualisation 3D
[Termes IGN] webGL
[Termes IGN] WebSIGRésumé : (Auteur) 3D WebGIS systems have been mentioned in the literature almost since the beginning of the graphical web era in the late 1990s. The potential use of 3D WebGIS is linked to a wide range of scientific and application domains, such as planning, controlling, tracking or simulation in crisis management, military mission planning, urban information systems, energy facilities or cultural heritage management, just to name a few. Nevertheless, many applications or research prototypes entitled as 3D WebGIS or similar are mainly about 3D visualization of GIS data or the visualization of analysis results, rather than about performing the 3D analysis itself online. This research paper aims to step forward into the direction of web-based 3D geospatial analysis. It describes how to overcome speed and memory restrictions in web-based data management by adapting optimization strategies, developed earlier for web-based 3D visualization. These are applied in a holistic way in the context of a fully 3D line-of-sight computation over several layers with split (tiled) and unsplit (static) data sources. Different optimization approaches are combined and evaluated to enable an efficient client side analysis and a real 3D WebGIS functionality using new web technologies such as HTML5 and WebGL. Numéro de notice : A2018-347 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi7070279 Date de publication en ligne : 21/07/2018 En ligne : https://doi.org/10.10.3390/ijgi7050187 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90572
in ISPRS International journal of geo-information > vol 7 n° 7 (July 2018)[article]
Titre : Design and implementation of a 4D Web application for analytical visualization of smart city applications Type de document : Article/Communication Auteurs : Syed Monjur Murshed, Auteur ; Ayah Mohammad Al-Hyari, Auteur ; Jochen Wendel, Auteur ; Louise Ansart, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] bibliothèque logicielle
[Termes IGN] données localisées 3D
[Termes IGN] globe virtuel
[Termes IGN] HTML
[Termes IGN] interface web
[Termes IGN] Javascript (langage de script)
[Termes IGN] visualisation 4D
[Termes IGN] visualisation dynamique
[Termes IGN] webGL
[Vedettes matières IGN] GéovisualisationRésumé : (Auteur) Contemporary development of computer hardware and software, WebGIS and geo-web services as well as the availability of semantic 3D city models, facilitate flexible and dynamic implementation of web applications. The aim of this paper is to introduce 4D CANVAS, a web-based application for dynamic visualization of 3D geospatial data for improved decision making in smart city applications. It is based on the Cesium Virtual Globe, an open-source JavaScript library developed with HTML5 and WebGL. At first, different data formats such as JSON, GeoJSON, Cesium Markup Language (CZML) and 3D Tiles are evaluated for their suitability in 4D visualization applications. Then, an interactive Graphical User Interface (GUI) is built observing the principle of cartographic standards to view, manage, understand and explore different simulation outputs at multiple spatial (3D surface of buildings) and temporal (hourly, daily, monthly) resolutions. In this regard, multiple tools such as aggregation, data classification, etc. are developed utilizing JavaScript libraries. As a proof of concept, two energy simulations and their outputs of different spatial and temporal resolutions are demonstrated in five Asian and European cities. Finally, the 4D CANVAS is deployed both in desktop and multi-touch screens. The proposed application allows easy integration of any other geospatial simulation results, thereby helps the users from different sectors to explore them interactively in 4D. Numéro de notice : A2018-348 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi7070276 Date de publication en ligne : 12/07/2018 En ligne : https://doi.org/10.3390/ijgi7070276 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90573
in ISPRS International journal of geo-information > vol 7 n° 7 (July 2018)[article]
Titre : Association rules-based multivariate analysis and visualization of spatiotemporal climate data Type de document : Article/Communication Auteurs : Feng Wang, Auteur ; Wenwen Li, Auteur ; Sizhe Wang, Auteur ; Chris R. Johnson, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse géovisuelle
[Termes IGN] analyse multivariée
[Termes IGN] Arctique
[Termes IGN] cyclone
[Termes IGN] données météorologiques
[Termes IGN] données spatiotemporelles
[Termes IGN] phénomène atmosphérique
[Vedettes matières IGN] GéovisualisationRésumé : (Auteur) Understanding atmospheric phenomena involves analysis of large-scale spatiotemporal multivariate data. The complexity and heterogeneity of such data pose a significant challenge in discovering and understanding the association between multiple climate variables. To tackle this challenge, we present an interactive heuristic visualization system that supports climate scientists and the public in their exploration and analysis of atmospheric phenomena of interest. Three techniques are introduced: (1) web-based spatiotemporal climate data visualization; (2) multiview and multivariate scientific data analysis; and (3) data mining-enabled visual analytics. The Arctic System Reanalysis (ASR) data are used to demonstrate and validate the effectiveness and usefulness of our method through a case study of “The Great Arctic Cyclone of 2012”. The results show that different variables have strong associations near the polar cyclone area. This work also provides techniques for identifying multivariate correlation and for better understanding the driving factors of climate phenomena. Numéro de notice : A2018-503 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi7070266 Date de publication en ligne : 09/07/2018 En ligne : https://doi.org/10.3390/ijgi7070266 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90575
in ISPRS International journal of geo-information > vol 7 n° 7 (July 2018)[article]
Titre : Historical collaborative geocoding Type de document : Article/Communication Auteurs : Rémi Cura, Auteur ; Bertrand Duménieu Année de publication : 2018 Projets : Belle Epoque / Riva, Angelo Article en page(s) : n° 262 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] base de données historiques
[Termes IGN] géocodage
[Termes IGN] géocodage par adresse postale
[Termes IGN] incertitude des données
[Termes IGN] interface web
[Termes IGN] jeu de données
[Termes IGN] objet géohistorique
[Termes IGN] Paris (75)
[Termes IGN] répertoire toponymique
[Termes IGN] science citoyenne
[Termes IGN] sciences humaines numériques
[Termes IGN] traitement de données localiséesRésumé : (auteur) The latest developments in the field of digital humanities have increasingly enabled the construction of large data sets which can be easily accessed and used. These data sets often contain indirect spatial information, such as historical addresses. Historical geocoding is the process of transforming indirect spatial information into direct locations which can be placed on a map, thus allowing for spatial analysis and cross-referencing. There are many geocoders that work efficiently for current addresses. However, these do not tackle temporal information, and usually follow a strict hierarchy (country, city, street, house number, etc.) which is difficult—if not impossible—to use with historical data. Historical data is filled with uncertainty (pertaining to temporal, textual, and positional accuracy, as well as to the reliability of historical sources) which can neither be ignored nor entirely resolved. Our open source, open data, and extensible solution for geocoding is based on extracting a large number of simple gazetteers composed of geohistorical objects, from historical maps. Geocoding a historical address becomes the process of finding one or several geohistorical objects in the gazetteers which best match the historical address searched by the user. The matching criteria are customisable, weighted, and include several dimensions (fuzzy string, fuzzy temporal, level of detail, positional accuracy). Since our goal is to facilitate historical work, we also put forward web-based user interfaces which help geocode (one address or batch mode) and display results over current or historical maps. Geocoded results can then be checked and edited collaboratively (no source is modified). The system was tested on the city of Paris, France, for the 19th and 20th centuries. It showed high response rates and worked quickly enough to be used interactively. Numéro de notice : A2018-389 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi7070262 Date de publication en ligne : 04/07/2018 En ligne : https://doi.org/10.3390/ijgi7070262 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90804
in ISPRS International journal of geo-information > vol 7 n° 7 (July 2018) . - n° 262[article]Documents numériques
en open access
Historical collaborative geocoding - pdf éditeurAdobe Acrobat PDF
