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Proceedings of the GIS Research UK, 12th Annual Conference, University of East Anglia, Norwich, 28th - 30th April 2004 / A. Lovett (2004)
Titre : Proceedings of the GIS Research UK, 12th Annual Conference, University of East Anglia, Norwich, 28th - 30th April 2004 Type de document : Actes de congrès Auteurs : A. Lovett, Éditeur scientifique ; School of Environment Sciences (Norfolk, Norwich), Auteur Editeur : Geographical Information Science Research - UK GISRUK Année de publication : 2004 Conférence : GISRUK 2004, 12th GIS research UK annual conference 28/04/2004 30/04/2004 Norwich Royaume-Uni Importance : 455 p. Format : 15 x 21 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] aide à la décision
[Termes IGN] base de données historiques
[Termes IGN] données localisées 2D
[Termes IGN] données localisées 3D
[Termes IGN] données socio-économiques
[Termes IGN] généralisation à la volée
[Termes IGN] géostatistique
[Termes IGN] métadonnées géographiques
[Termes IGN] modèle logique de données
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle numérique de terrain
[Termes IGN] modélisation
[Termes IGN] objet géographique
[Termes IGN] occupation du sol
[Termes IGN] ontologie
[Termes IGN] participation du public
[Termes IGN] risque environnemental
[Termes IGN] santé
[Termes IGN] SIG participatif
[Termes IGN] système d'information géographique
[Termes IGN] visualisation 3D
[Termes IGN] visualisation de donnéesNote de contenu : Session 1A - Geocomputation 1
A Dual Approach to Cluster Discovery in Point Event Data Sets /Allan Brimicombe, University of East London
On the Disk Allocation for Range Queries Problem / Fouad B. Chedid, Notre Dame University, Lebanon
A New Index Technique Applied to Window Query of Time Series Data / Grooming Du, Sun Yat-sen University, China
Using Context to Repair Partial Occlusions in Topographic Data / Diarmuid 0'Donoghue, National University of Ireland, Maynooth
Session 1B - Environmental Hazards
A GIS-based Approach to Lava Flow Simulation for Volcanic Hazard Assessment on Mount Etna(Italy) / Maria Luisa Damiani, University of Milan, Italy
The vulnerability of building stock to seismic hazard: A GIS-based analysis of Colchester, UK / Antonia-Jane Weston, University of East Anglia
An analysis of environmental quality and social deprivation using wards and postcode analysis in England / John Fairborn, Staffordshire University
Using GIS to examine Environment, Drinking Water and Health interactions / lain Lake, University of East Anglia
Session 1C - Landscape Visualisation
Augmenting Reality? 3D Modelling and Visualisation in Geography Fieldwork, Gary Priestnall, University of Nottingham
Photorealistio 3D GIS utilising a real-time interactive environment, Mark Wynne & Dr Carl Gavin, DigitalInc, Lateral Visions Software Company, Liverpool
Using Three Dimensional GIS to Add Value to the Environmental Impact Assessment Process / Miles Davis, University College London
Landscape Visualisation Based on GIS Data / Christian Lindner, University of Dortmund, Germany
Analysing the woodland content of views, the influence of linear and clustered woodland features on the visual landscape / Are Ode, Swedish University of Agricultural Sciences, Alnarp
Session 2A - Data Structures
Techniques for on the-fly generalisation of thematic point data using hierarchical data structures / Dirk Burghardt, University of Zurich, Switzerland
Control of spatial discretization in coastal oil spill modelling / Yang Li, University of East London
Implementation of Progressive Vector Transmission Using a New Data Structure and Modified RDP Algorithm / Min Zhou, University College Dublin, Ireland
The Topology Matrix: A Method for Extracting and Analysing Higher Order Topology from Triangular Irregular Networks / Neil Sang, Macaulay Institute, Aberdeen
Session 2B - Terrain Analysis
Localisation of error areas on a DTM by overlaying altimetric and vector data /Frederic Rousseaux, Institut Géographique National, France
Design and Application of a Topographic Filter for Processing of LiDAR Data / Samson Ayugi, University College London
Viewshed Analysis and Measures of Peakedness as a Tool for Quantifying Terrain Panoramas / Katherine Arrell, University of Leeds
Mountain Areas in Europe: Delineation, Database and Analysis / Carsten Schumann, RRG Spatial Planning and Geoinformation, Germany
Session 2C - Public Participation GIS
Public Engagement in Landscape Planning with Reference to Woodlands and Wind Turbines / Alastor Coleby, Macaulay Institute, Aberdeen
Empowering disadvantaged and marginalised groups within planning processes: Accessibly mapping through PPGIS / Christian Castle, University College London
An Internet-based spatial decision support system to foster public participation in the wind farm siting problem / Ana Mink, University College London
Olympic Gold: Using GISc to facilitate public participation in the Olympic planning process / Peter Wright, London School of Economics and Political Science
Session 3A - Geocomputation 2
Testing self-organising feature maps against traditional clustering techniques for the unsupervised classification of small to medium sized geographical data sets / Robert Abrahart, The University of Nottingham
A Relative Shape Comparison Technique to Compare Shapes of Polygons / Nico Van de Weghe, Ghent University, Belgium
Texture Based Classification of Topographic Objects / Padraig Corcoran, National University of Ireland, Maynooth
Topographic Objects Recognition Using Stochastic Tagging / Bashir Salaik, National University of Ireland, Maynooth
Session 3B - Environmental Applications
Phylogeographical Information Systems / David Kidd, University of St. Andrews
Use of GIS to Assess Groundwater Vulnerability to Pesticide Contamination / Paulette Posen, University of East Anglia
GIS and predictive modelling: a comparison of methods applied to forestal management and decision making / A.M. Felicisimo, Universidad de Extremadura, Spain
Exploring risks from arsenic-contaminated drinking water in Bangladesh: GIS and participation / Christine Dunn, University of Durham
Session 3C – Metadata
The Go-Geol Portal Metadata Initiatives / Tony Mathys, University of Essex
Interactive Specification of Customised Geographical Data Sets / Sandrine Bailey, Laboratoire COGIT-IGN, France
Schema Visualisation using a Metadata Approach for GIS / A. I Abdelmoty, Cardiff University
Facilitating Data Discovery In Environmental Data Clearinghouses Through Spatial Data Mining / G. Hobona, University of Newcastle upon Tyne
Session 4A – Ontologies
Towards a formalization of urban domain ontologies with multiple perspectives / AhmedArara, University of Lyon, France
An Evaluation of Geo-Ontology Representation Languages for Supporting Web Retrieval of Geographical Information / Philip Smart, Cardiff University
Tales of the River Bank: An Overview of the First Stages in the Development of a Topographic Ontology / Glen Hart, Ordnance Survey
Component Based Modelling: a case study using river networks / Fiona Hemsley, Flint Oxford Brookes University
Session 4B - Decision Making
Decision Support Tools for Strategic Planning of Greenspaces / David Miller, Macaulay Institute, Aberdeen
From Lines in the Sand to Lines on a Map: GIS Applications in Environmental Planning / Robert MacFarlane, Northumbria University
“Riding an Elephant to Catch a Grasshopper”: Applying and Evaluating Techniques for Stakeholder Participation in Land Use Planning in the Kae Watershed, Northern Thailand / Foyfa Shutidamrong, University of East Anglia
Session 4C - Health Applications
The use of geo-demographics to profile and target road traffic incident casualties for improving road safety / Tessa Anderson, University College London
Understanding geographical variations in mortality and morbidity from road traffic accidents using GIS / Andy Jones, University of East Anglia
Using spatial analysis and Geographical Information Systems in process evaluation of large-scale HIV/AIDS prevention programmes: preliminary results of analysis at the bank-region level / Itama Katz, University of Cambridge
Injuries and access to casualty departments - how well does perceived accessibility correlate with access modelled by GIS? / Stephen Christie, National Public Health Service for Wales
Session 4D - Institutions & Infrastructures
GIS and Geodemographics: A National Classification of ICT Usages / Chao Li, University College London
A framework for global GI communities: A social, network and technological approach / Cristina Arciniegas, City University
Institutionalising GIS using effective diffusion paradigm / Hetal Patel, Centre for Environmental Planning and Technology, India
The Effects of Culture on the Implementation of a Spatial Data Infrastructure / Mark Norbury, Poe-IT, Somerset
Session 5A - 3D GIS
A projective approach to handle 3D spatial data / Roland Billen, University of Glasgow
Aspects of the Design of a Three-dimensional National Mapping Data Framework / Aidan Slingsby, University College London
Map Generalization for OSMasterMap Data in Small Display Mobile GIS Applications / Suchith Anand University of Glamorgan
3D Topology and GIS - Where are we now? / Claire Ellul, University College London
Session 5B - Social & Historical Applications
Surnames as a quantitative evidence resource for the Social Sciences / Daryl Lloyd, University College London
Presenting 19th Century Data using 21st Century Standards / Ian Turton, University of Leeds
Big GIS or Little GIS? Establishing the best route ahead for research in historical GIS / Roy Bradshaw, University of Nottingham
Widening access and participation in higher education / Marc Farr, University College London
Session 5C - Health & Zone Design
GIS-based automated zone design for an epidemiological study of airborne dioxins and cancer in Denmark / Samantha Cockings, University of Southampton
A GIS-based Multidimensional Approach for Defining Regions for Locality Health Care Planning / Niamh Shortt, Institute of Public Health in Ireland
Constructing data zones for Scottish Neighbourhood Statistics / Robin Flowerdew, University of St. Andrews
A Framework for Creating Consistent Areas Through Time in Scotland / Daniel Exeter, University of St. Andrews
Dental Health and GIS: Creating Consistent Geographical Zones For Fluoridation Data / Ralph Smith, West Midlands Cancer Intelligence Unit
Session 5D - Coastal & Marine Applications
Dynamic Simulation and Visualisation of Coastal Erosion: Past, Present and Future / lain Brown, University of East Anglia
The Common Fisheries Policy: an Integrated GIS and Spatial Data Analysis Approach / Jacqueline Whalley— University of Kent
Towards the modification of OS MasterMap for specialist users / Stephanie Marsh, City University
Marine Environmental Modelling: Problems and Solutions / Lei Tan, University of Kent
Session 6A - Grid
Grid-enabled GIS: Opportunities and challenges / Claire Jarvis, University of Leicester
Grids: completing the bridges from High Performance Computing to GIS? / Mine Minder, University of Edinburgh
Taking the macho out of the machine: small virtual organisations, grid computing and GIS. / John Lee Oxford Brookes University
Collaborative Analysis of Offenders' Personal and Area-based Social Exclusion: A pilot project of Grid technologies in e-social science / Young Hoon-Kim, University of Sheffield
Session 6B - Land Cover
An optimised semi-automated methodology for populating a national land use dataset / William Tompkinson, Ordnance Survey
Identifying land cover change at the parcel level using LCMGB and LCM2000, expert knowledge and spectral meta-data / Alexis Comber, University of Leicester
Improving quality and minimising uncertainty of land cover maps using fuzzy logic / Linda See, University of Leeds
Evaluating uncertainty in classification within the Land Cover Map 2000 using indices of heterogeneity / Paul Robinson, University of Leicester
Session 6C - Data Visualisation
Building, Unpacking and Visualising Human Flows with GIS / Pip Forer, University of Auckland, New Zealand
Modelling space for the generalisation of point maps / Alistair Edwardes,University of Zurich, Switzerland
Assessing Different Approaches to Visualising Spatial and Attribute Uncertainty in Socioeconomic Data using the Hexagonal or Rhombus (HoR) Quadtree / Julian Kardos, University of Otago, New Zealand
A Comparison of Approaches for the Visualisation of Space-Time Data / Chris Brunsdon, University of Glamorgan
Session 7A - Visualisation Challenge
Session 7B - Modelling
Experiments with a Hybrid Multi-Agent Model for the Spatial Distribution of Petrol Prices / Alison Heppenstall, University of Leeds
Land-use simulation for small regions in the Swiss mountain area — comparison of two modelling techniques / Ariane Walt, Swiss Federal Institute for Snow and Avalanche Research, Switzerland
A guide-line for territorial maintenance: development of a GIS-based method / Danilo Godone, University of Turin, Italy
A Graph-based Scene Analysis Technique / Jose Paulo de Almeida, University College London
Session 7C - Statistics
Populated pixel maps: a simple method to facilitate dasymetric areal interpolation / Mitchel Langford, University of Glamorgan
Geographically Weighted Poisson and Negative Binomial Regression — Modelling with Zone Based Count Data / Martin Charlton, University ofNewcastle
Integrating GIS with Fuzzy Logic and Geostatistics: Predicting Air Pollutant PM10 for California Using Fuzzy Kriging / Danni Guo, University of Cape Town, South Africa
Improved techniques using GIS and remotely sensed data for real-time estimate of crop coefficient / Islam El-Magd, University of Southampton
Posters (in alphabetical order of first author)
The Elusive Point of Central Location: search for the multidimensional spatial median and a proposed solution / Roy P. Bradshaw & Robert J. Abrahart, The University of Nottingham
Modelling the Spatial Distribution of Soil Chemical Characteristics and Associated Drainage Waters: A Case Study in the Lake District / Louise Calvert Richard Smart, Colin McClean & Malcolm Cresser, University of York
Lying With GIS / John Curry, City Bath College
Widening access and participation in UK higher education / Marc Farr, Paul Longley & Alex Singleton, University College London
Calculating potential increase in cumulative core area (CCA) of ancient woodland through land cover conversion / C. E. Humphries, P. Aplin, A. Wilkinson, J.E. Mason & R.J. Smithers3, EnviroData Solutions, The Eionersity of Nottingham, The Woodland Trust
GE and simulation system integration in a virtual reality environment 403 ..Ptim Fonseca i Cases & Jordi Montero i Garcia - Polytechnics University of Catalonia, Spain.
Achieving a Comprehensive Emergency Planning by using MCA and GIS technique- Using HAZMAT transportation in Norfolk, U.K. as example / Chih-Chung Kao, Fung Chia University, Taiwan
Solution approaches to multiple viewpoint location problems: Comparative analysis using topographic features / Tocan-Hoon Kim & Steve Wise, University of Sheffield
Biological control of locusts: using GIS to model spatial variation of the performance of a biopesticide / J. I. Klass, S. Blanford & M. B. Thomas, Imperial College London, University of Edinburgh
How accurate are official vital statistics data? / Nathan Lester, Sion Ward, Stephen Christie, Anna Howard & Rhys Gibbon - National Public Health Service for Wales
Creating a GIS application for retail demand prediction / AbdulKader A. Murad, Department of Urban & Regional Planning, Saudi Arabia
“Bus Route Crime”. An Evaluation of a Safer Travel Initiative / Dr Andrew Newton, Dr Shane Johnson & Dr Kate Bowers, University of Liverpool
Mapping and Modelling Urban Growth in a Data Poor Environment. The Case of Accra Metropolitan Area (AMA), Ghana. / Emmanuel Otoo, Duncan Whyatt & Uwem Ite, Lancaster University
The Shropshire Groundwater Scheme — The use of Interpolation Techniques for Soil Moisture Vulnerability Mapping / Chris Procter, Alison Riding, Hester Lyons & Kevin Voyce (Environment Agency) - ADAS Consulting LTD
Five interfaces coupling two Worlds : linking GIS and transport models / Carsten Schrürmann & Björn Schwarze, RRG Spatial Planning and Geoinformation, University of Dortmund, Germany
Modelling the effects of climate change on oak woodland in Britain / Louise Sing, Duncan Ray, Elizabeth Poulsom & Mark Broadmeadow, Forest Research
Problem gambling in New Zealand / B. W. Wheeler & J. E. Rigby, Victoria – University of Wellington, New ZealandNuméro de notice : 19712 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Actes DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82913 ContientRéservation
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Code-barres Cote Support Localisation Section Disponibilité 19712-01 CG2004 Livre Centre de documentation Congrès Disponible Valorisation des données 3D au Grand Lyon / M. Delobel (2004)
Titre : Valorisation des données 3D au Grand Lyon Type de document : Mémoire Auteurs : M. Delobel, Auteur Editeur : Champs-sur-Marne : Ecole nationale des sciences géographiques ENSG Année de publication : 2004 Importance : 188 p. Format : 21 x 30 cm Note générale : Bibliographie
Rapport de stage présenté en vue d'obtenir le diplôme de mastère de photogrammétrie numérique, image métrique, vision 3DLangues : Français (fre) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] 3D analyst
[Termes IGN] analyse comparative
[Termes IGN] analyse des besoins
[Termes IGN] ArcGIS
[Termes IGN] base de données foncières
[Termes IGN] communauté urbaine
[Termes IGN] données localisées 3D
[Termes IGN] fonctionnalité
[Termes IGN] logiciel SIG
[Termes IGN] Lyon
[Termes IGN] maquette numérique
[Termes IGN] modèle numérique de terrain
[Termes IGN] orthophotoplan numérique
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] TerraExplorer
[Termes IGN] toit
[Termes IGN] valorisation
[Termes IGN] visualisation 3DIndex. décimale : MPPMD Mémoires du mastère spécialisé Photogrammétrie, Positionnement et Mesures de Déformation Résumé : (Auteur) Les besoins en valorisation de données 3D au Grand Lyon sont tout d'abord établis. Les données 3D disponibles sont l'orthophotographie, le Modèle Numérique de Terrain et la restitution photogrammétrique des bordures de toits et des faîtages sur l'ensemble du territoire du Grand Lyon. Ensuite, l'expérience des utilisateurs de données 3D au Grand Lyon et l'expérience des spécialistes de la 3D au sein d'autres organismes ont fait l'objet d'une analyse. Les résultats de l'évaluation de logiciels, à travers la réalisation de maquettes virtuelles 3D sont présentés, ainsi que l'étude de solutions proposées par des prestataires. Ceci met en évidence les outils permettant de répondre aux besoins du Grand Lyon. L'analyse des fichiers de restitution photogrammétrique des bords de toits et de faîtage a montré la nécessité de traiter ces données, afin de les rendre utilisables pour des applications de scènes virtuelles 3D. Une méthodologie est donc proposée pour reconstruire le bâti à partir de ces données. Enfin, ces différentes études ont abouti à des recommandations concernant la mise en oeuvre pour répondre aux besoins. Elle devra permettre de guider le Grand Lyon dans la réalisation. Note de contenu : :
1- INTRODUCTION
1-1 Objet
1-2 Le projet ADAMO
2- LES BESOINS EN VALORISATION DES DONNEES 3D AU GRAND LYON
2-1 Méthode
2-2 Métiers de l'urbanisme et du foncier
2-2.1 Les usages
2-2.2 Les données 3D
2-2.3 Les fonctionnalités
2-3 Métiers de l'eau
2-3.1 Les usages
2-3.2 Données
2-3.3 Fonctionnalités
2-4 Métiers de la communication
2-4.1 Usages
2-4.2 Données
2-4.3 Fonctionnalités
2-5 Tableau récapitulatif des besoins
3- LES EXPERIENCES
3-1 Les expériences au Grand Lyon
3-1.1 L'analyse urbaine
3-1.2 Réalisation de maquettes virtuelles 3D
3-1.3 Modélisation du réseau d'assainissement du Grand Lyon
3-1.4 Communication sur le risque inondation
3-2 Les expériences hors Grand Lyon
3-2.1 Organismes contactés
3-2.2 Le Havre
3-2.3 Rennes
3-2.4 Communauté urbaine de Strasbourg
3-2.5 RGD74
4- MAQUETTES, EVALUATION DE LOGICIELS, SOLUTIONS PROPOSEES PAR DES PRESTATAIRES
4-1 Logiciels internes
4-1.1 ArcGis 8.2 avec extension 3D Analyst
4-1.2 AutoCAD 2002
4-2 Logiciels externes
4-2.1 Geoshow 3D
4-2.2 SpacEyes
4-3 Autres solutions
4-3.1 Autres sociétés
4-4 Fonctionnalités des différents logiciels connus
5- VERS LA 3D OPERATIONNELLE : RECONSTRUCTION DU BATI
5-1 Analyse des données disponibles
5-1.1 Structure des fichiers disponibles
5-1.2 Qualité des données disponibles
5-2 Les moyens vers une 3D opérationnelle
5-3 Mode opératoire sous SIS MapModeller
5-3.1 Estimation
5-3.2 Programmation sous SIS
5-4 Mode opératoire sous ArcGis
5-4.1 Méthodologie pour le remplissage des attributs Zmin, Zmax, Zrnoy et Zsol de TOIT_RECONS.shl et TOIT.shp
5-4.2 Programmation sous Arfflis
5-5 Création du fichier TOIT_RECONS_W.shp
5-5.1 Observation du fichier TOIT_RECONS.shp
5-5.2 Recherche d'un type d'entité pouvant représenter un bâtiment
5-5.3 Algorithme de création du fichier TOIT_RECONS_MP.shp
5-5.4 Programmation sous ArcGis
6- VERS LA 3D OPERATIONNELLE : LES OUTILS
6-1 Analyse du territoire et études
6-1.1 Utilisation d'ArcGis et de l'extension 3D Analyst
6-1.2 Utilisation de TerraExplorer Pro
6-2 Extraction d'une scène 3D
6-3 Concertation et communication
6-3.1 Création d'une scène 3D réaliste, Les trois niveaux de représentation
6-3.2 Extraction d'images à partir d'une scène 3D réaliste
6-3.3 Réalisation d'une animation 3D à partir d'une scène 3D réaliste
6-3.4 Réalisation d'un fichier de navigation en temps réel
6-4 Coûts indicatifs
6-5 Domaines d'application des logiciels
7- VERS LA 3D OPERATIONNELLE : DEROULEMENT DES OPERATIONS DE MISE EN CEUVRE
7-1 Etudes à mener en amont ou en parallèle à la mise en oeuvre
7-2 Reconstruction du bâti
7-3 Produits dérivés du MNT
7-4 Outils d'analyse et d'études
7-4.1 Solution avec ArcGis
7-4.2 Solution avec les outils de la société EEE
7-5 Scène 3D et produits dérivés
7-5.1 Scène 3D au niveau d'une ville
7-5.2 Scène 3D au niveau d'un quartier ou d'un îlot
8- CONCLUSIONNuméro de notice : 30176 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Mémoire masters divers Organisme de stage : Direction des Systèmes d'Information et de Télécomunication du Grand Lyon Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=51643 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 30176-01 MPPMD Livre Centre de documentation Travaux d'élèves Disponible 30176-02 MPPMD Livre Centre de documentation Travaux d'élèves Disponible An object-oriented data model for complex objects in three-dimensional geographical information systems / Wei Shi in International journal of geographical information science IJGIS, vol 17 n° 5 (july - August 2003)
[article]
Titre : An object-oriented data model for complex objects in three-dimensional geographical information systems Type de document : Article/Communication Auteurs : Wei Shi, Auteur ; B. Yang, Auteur ; Qi Li, Auteur Année de publication : 2003 Article en page(s) : pp 411 - 430 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] analyse spatiale
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle conceptuel de données
[Termes IGN] modèle orienté objet
[Termes IGN] modélisation 3D
[Termes IGN] objet géographique 3D
[Termes IGN] objet géographique complexe
[Termes IGN] primitive géométrique
[Termes IGN] primitive volumique
[Termes IGN] requête spatiale
[Termes IGN] SIG 3D
[Termes IGN] ville
[Termes IGN] visualisation 3DRésumé : (Auteur) Developing a three-dimensional (3D) data model for Geographic Information Systems (GIS) is an essential and complex issue. 3D modelling in GIS is becoming ever more important for the development of cyber cities and digital earth, which have recently become feasible. A competent 3D model forms an efficient foundation for 3D visualization, query and spatial analysis. As a development of the existing 3D models, this study proposes particular improvements in handling complex 3D objects. We present an object-oriented data model for handling complex 3D objects in GIS. First, the conceptual data model is developed based on the principle of object-oriented (00) data modelling. This model is designed based on the following three basic geometric elements: node, segment and triangle. Accordingly, the abstract geometric objects are defined: including points, lines, surfaces and volumes. Second, the corresponding 3D logical model is designed based on the defined abstract objects and the relationships between them. Third, a formal representation of the 3D spatial objects is described in detail. Fourth, a prototype 3D GIS is developed based on the proposed 3D data model. Finally, we describe the results of an experimental study to reconstruct 3D objects using this 3D GIS and a comparison with the performance of other 3D data models. The proposed model is able to handle complex objects, such as complex buildings and TV towers, which is an essential functionality for building large-scale cyber cities, such as for Hong Kong. The proposed data model proves to be very efficient, particularly in visualization and rendering. The experimental results show which the data volume of the proposed model is compacted and the visualization speed for 3D objects is improved, compared with the existing models. Numéro de notice : A2003-142 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/1365881031000086974 En ligne : https://doi.org/10.1080/1365881031000086974 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22438
in International journal of geographical information science IJGIS > vol 17 n° 5 (july - August 2003) . - pp 411 - 430[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-03051 RAB Revue Centre de documentation En réserve L003 Disponible 079-03052 RAB Revue Centre de documentation En réserve L003 Disponible Fusion of hyperspectral and radar data using the IHS transformation to enhance urban surface features / C.M. Chen in ISPRS Journal of photogrammetry and remote sensing, vol 58 n° 1-2 (June - December 2003)
[article]
Titre : Fusion of hyperspectral and radar data using the IHS transformation to enhance urban surface features Type de document : Article/Communication Auteurs : C.M. Chen, Auteur ; G.F. Hepner, Auteur ; R.R. Forster, Auteur Année de publication : 2003 Article en page(s) : pp 19 - 30 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image mixte
[Termes IGN] accentuation d'image
[Termes IGN] avalanche
[Termes IGN] effondrement de terrain
[Termes IGN] fusion d'images
[Termes IGN] image AVIRIS
[Termes IGN] image hyperspectrale
[Termes IGN] image radar
[Termes IGN] image TOPSAR
[Termes IGN] limite de résolution radiométrique
[Termes IGN] milieu urbain
[Termes IGN] modèle numérique de terrain
[Termes IGN] occupation du sol
[Termes IGN] risque naturel
[Termes IGN] transformation intensité-teinte-saturation
[Termes IGN] visualisation 3D
[Termes IGN] vue perspectiveRésumé : (Auteur) The Intensity Hue Saturation (IHS) transformation is used to integrate the high spectral resolution, provided by hyperspectral data (Airborne Visible Infrared Imaging Spectrometer, AVIRIS), and the surface texture information, derived from radar data (Topographic Synthetic Aperture Radar, TOPSAR), into a single image of an urban area. This transformed image is superimposed on the Digital Elevation Model (DEM) data derived from TOPSAR data to create a 3D perspective view. The ambiguity of several urban land cover types is resolved to a larger degree using the higher spectral and spatial resolutions and the synergistic visual content provided by the fused image in a 3D perspective. For urban areas that are at risk from geological hazards (e.g., avalanches, mudflows, and debris flows), the fused image provides a costeffective product, rich in the information necessary for assessment and mitigation of these hazards. Copyright ISPRS Numéro de notice : A2003-085 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/S0924-2716(03)00014-5 En ligne : https://doi.org/10.1016/S0924-2716(03)00014-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22381
in ISPRS Journal of photogrammetry and remote sensing > vol 58 n° 1-2 (June - December 2003) . - pp 19 - 30[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-03032 RAB Revue Centre de documentation En réserve L003 Disponible 081-03031 RAB Revue Centre de documentation En réserve L003 Disponible 3D modelling of heritage monuments: increasing realism by combining techniques / Sabry F. El Hakim in GIM international, vol 17 n° 4 (April 2003)
[article]
Titre : 3D modelling of heritage monuments: increasing realism by combining techniques Type de document : Article/Communication Auteurs : Sabry F. El Hakim, Auteur ; J.A. Beraldin, Auteur ; M. Picard, Auteur Année de publication : 2003 Article en page(s) : pp 13 - 15 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie terrestre
[Termes IGN] abbaye
[Termes IGN] Italie
[Termes IGN] modélisation 3D
[Termes IGN] monument historique
[Termes IGN] patrimoine immobilier
[Termes IGN] photogrammétrie architecturale
[Termes IGN] réalité virtuelle
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] télémétrie laser terrestre
[Termes IGN] visualisation 3DRésumé : (Auteur) 3D Modelling of heritage monuments has increased significantly due to advances in laser scanners, 3D modelling software and computers. The main approaches today are interactive and automatic photogrammetry, terrestrial laser ranging and image rendering. The authors discuss each approach, pointing out its advantages and disadvantages. They then present their own approach, which combines image-based, range-based modelling and image-based rendering. Modelling of the Abbey of Pomposa in Italy is presented as an example. Numéro de notice : A2003-071 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22367
in GIM international > vol 17 n° 4 (April 2003) . - pp 13 - 15[article]Réservation
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