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European Spatial Data Research EuroSDR
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EuroSDR est une organisation paneuropéenne dont l'objet est de mettre en relation les agences cartographiques et cadastrales avec les instituts de recherche et les universités en Europe à des fins de recherche appliquée dans la collecte, la gestion et la diffusion de données géospatiales.
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Titre : EuroSDR-Project : Final report Type de document : Rapport Auteurs : Jantien E. Stoter, Auteur ; Görres Grenzdorffer, Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 2010 Collection : EuroSDR official publication, ISSN 0257-0505 num. 58 Importance : 270 p. Format : 21 x 30 cm Accompagnement : 1 cédérom ISBN/ISSN/EAN : 978-90-5179-887-6 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] acquisition de données
[Termes IGN] analyse comparative
[Termes IGN] chambre à moyen format
[Termes IGN] chambre DTC
[Termes IGN] évaluation des données
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] instrument aéroporté
[Termes IGN] lisibilité perceptive
[Termes IGN] logiciel de cartographieNote de contenu : 1 : State-of-the-art of automated generalisation in commercial software / Jantien Stoter
2 : Commission 1: Performance of medium format digital airborne cameras / Görres GrenzdörfferNuméro de notice : 15534 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Rapport En ligne : http://www.eurosdr.net/sites/default/files/uploaded_files/eurosdr_publication_nd [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62753 ContenuRéservation
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Code-barres Cote Support Localisation Section Disponibilité 15534-01 37.30 Livre Centre de documentation Géomatique Disponible 15534-03 37.30 Livre Centre de documentation Géomatique Disponible 15534-02 K325 Livre LASTIG Dépôt en unité Exclu du prêt Documents numériques
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Eurosdr bull 58Adobe Acrobat PDF
Titre : State-of-the-art of automated generalisation in commercial software Type de document : Chapitre/Contribution Auteurs : Jantien E. Stoter, Éditeur scientifique ; Blanca Baella, Auteur ; Connie Block, Auteur ; Dirk Burghardt, Auteur ; Cécile Duchêne , Auteur ; Maria Pla, Auteur ; Nicolas Regnauld , Auteur ; Guillaume Touya , Auteur ; et al., Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 2010 Collection : EuroSDR official publication, ISSN 0257-0505 num. 58 Importance : pp 9 - 231 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse comparative
[Termes IGN] généralisation automatique de données
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] généralisation géométrique (de visualisation)
[Termes IGN] lisibilité perceptive
[Termes IGN] logiciel de cartographie
[Termes IGN] méthodologie
[Termes IGN] système d'information géographique
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) : This report presents the EuroSDR research project that studied the state-of-the-art of automated generalisation in commercial software in a collaboration between National Mapping Agencies (NMAs), research institutes and vendors. The aims of the study were to learn more about generic and specific map requirements of NMAs, to show possibilities and limitations of commercial generalisation software, and to identify areas for further developments based on latest research advances. The project consisted of three main steps: requirements analysis, testing, and evaluation. The requirement analysis (carried out between Oct 2006 till June 2007) resulted in four representative test cases, formalised and harmonised NMA map specifications for automated generalisation as well as an analysis of the defined specifications that shows the similarities and differences between map specifications of different NMAs. Between June 2007 and Spring 2008 tests were performed by project team members (from NMAs and research institutes) on out-of-the-box versions of four generalisation systems: ArcGIS (ESRI), Change/Push/Typify (University of Hanover), Radius Clarity (1Spatial) and axpand (Axes Systems).At the same time the vendors (except Axes systems) carried out tests with the same test cases with improved and/or customised versions of their systems. The tests resulted in 35 outputs consisting of 700 thematic layers, where it should be noted that the effort for one test was approximately 1 week. The evaluation, carried out between summer 2008 and spring 2009, consisted of an evaluation of meta aspects (based on information recorded by the testers) and of an evaluation of the generalised datasets
themselves. The latter evaluation consisted of three parts that completed each other: a) automated constraint-based evaluation, b) evaluation which visually compared different outputs for one test case and c) a qualitative evaluation by cartographic experts. From the project results it can be concluded that all systems offer potentials for automated generalisation. However the results highlighted a few issues that identify areas for further development in both research and commercial systems. Although the results show that for many problems solutions do exist (e.g. building simplification), the algorithms are difficult to parameterise and a direct match between parameters and specifications was often missing. In addition none of the four test cases were fully solved by the out-of-the-box systems. While some problems are close to being solved (generalisation of individual buildings and roads), a few problems are far from being solved. Firstly it is impossible with the tested systems to apply different algorithms and/or parameter values in different contexts. This is either not supported or a measure to detect the appropriate contexts is missing. Another remaining generalisation software problem is operations that concern more than one object (e.g. network typification). Also, the generalisation of the topographic context in an integrated manner with the terrain is not appropriately covered in the tested systems. It should be noted that some of the missing functionalities were fixed in the vendors’ parallel tests (e.g. buildings elimination and displacement algorithms in ArcGIS and Radius Clarity). Although these results may seem disappointing, some final thoughts may help to put the results in the right context. Firstly the project had very high ambitions (i.e. many specifications were defined; the selection of test cases focused on known and complex problems; the ultimate aim of the generalisation process was high quality paper maps). Secondly, the project is well received by vendors to push internal developments. In addition it is not a surprise that out-of-the box versions are not capable of fulfilling NMA requirements, which is also shown by the fact that customised systems are used more satisfactory in practice. Consequently customisation of the systems should be further developed and should be one of the focuses in a future project.Note de contenu : 1. PRESENTATION OF THE PROJECT
1.1 Introduction
1.2 Previous research related to map specifications for automated map generalisation
1.3 Scope of the current study
1.4 Project set up
2. METHODOLOGY
2.1 Requirement analysis
2.2 The test process
2.3 Evaluation of system capabilities, test processes and constraint expressions
2.4 Evaluation of generalised outputs
3. RESULTS AND INTERPRETATION
3.1 Outputs of the tests
3.2 Evaluation of the capabilities of the systems
3.3 Evaluation of test processes
3.4 Evaluation of constraint expressions
3.5 Automated evaluation of generalised outputs: results and conclusions
3.6 Evaluation by comparing generalised outputs: results and conclusions
3.7 Expert evaluation: results and conclusions
4. VENDORS' SOLUTIONS
4.1 Vendors' tests
4.2 Developments since 2007 and references to examples from practice
5. CONCLUSIONS AND DISCUSSION
5.1 Answers to research questions
5.2 Conclusions and further research
6. REFERENCES
7. APPENDICESNuméro de notice : H2010-003 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : GEOMATIQUE Nature : Chapître / contribution Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86301 Documents numériques
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H2010-003_ State-of-the-art of automated generalisation in commercial softwareAdobe Acrobat PDF Detection of unregistered buildings for updating 2D databases / Nicolas Champion (01/12/2009)
contenu dans Detection of unregistered buildings for updating 2D databases / European Spatial Data Research EuroSDR (2009)
Titre : Detection of unregistered buildings for updating 2D databases Type de document : Chapitre/Contribution Auteurs : Nicolas Champion , Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 01/12/2009 Importance : pp 7 - 40 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse comparative
[Termes IGN] base de données vectorielles
[Termes IGN] détection de changement
[Termes IGN] détection du bâti
[Termes IGN] données localisées 2D
[Termes IGN] mise à jour de base de donnéesRésumé : (Auteur) In the past few years, the production of 2D topographic databases has been completed in most industrialised countries. Presently, most efforts in the National Mapping and Cadastral Agencies (NMCAs) are devoted to the update of such databases. Because the update process is generally carried out manually by visual inspection of orthophotos, it is time-consuming and expensive. The development of semi-automatic systems is, thus, of high interest for NMCAs. The current deficits in automation and the lack of expertise within NMCAs have driven the EuroSDR (European Spatial Data Research - http://www.eurosdr.net) to launch a project in this topic. The aim of the project "Detection of unregistered buildings for updating 2D databases" is to evaluate the feasibility of semi-automatically detecting changes in a 2D building vector database from optical imagery or LIDAR. Three specific sub-topics are investigated in detail: firstly, the impact of methodology; secondly, the impact of the type and spatial resolution of input data; lastly, the impact of the complexity of the scene, especially with respect to topography and land use. A comparison of algorithms representative of the current state-of-the-art in the field of change detection is performed. In this report, we describe the three test areas used in the project, the methodology used for assessing and comparing the methods, and the results that have been obtained with the four different approaches. The results are thoroughly analysed and a discussion enables to bring out conclusions and promising directions to follow for building an optimal operational system in the future. Numéro de notice : H2009-001 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Chapître / contribution DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65898 Detection of unregistered buildings for updating 2D databases / European Spatial Data Research EuroSDR (2009)
Titre : Detection of unregistered buildings for updating 2D databases Autre titre : New platforms Type de document : Rapport Auteurs : European Spatial Data Research EuroSDR, Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 2009 Collection : EuroSDR official publication, ISSN 0257-0505 num. 56 Importance : 100 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-90-5179-694-0 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection
[Termes IGN] acquisition de données
[Termes IGN] analyse d'image numérique
[Termes IGN] base de données vectorielles
[Termes IGN] détection du bâti
[Termes IGN] données localisées 2D
[Termes IGN] mise à jour de base de données
[Termes IGN] photogrammétrie aérienneRésumé : (Auteur) 1- In the past few years, the production of 2D topographic databases has been completed in most industrialised countries. Presently, most efforts in the National Mapping and Cadastral Agencies (NMCAs) are devoted to the update of such databases. Because the update process is generally carried out manually by visual inspection of orthophotos, it is time-consuming and expensive. The development of semi-automatic systems is, thus, of high interest for NMCAs. The current deficits in automation and the lack of expertise within NMCAs have driven the EuroSDR (European Spatial Data Research) to launch a project in this topic. The aim of the project "Detection of unregistered buildings for updating 2D databases" is to evaluate the feasibility of semi-automatically detecting changes in a 2D building vector database from optical imagery or LIDAR. Three specific sub-topics are investigated in detail: firstly, the impact of methodology; secondly, the impact of the type and spatial resolution of input data; lastly, the impact of the complexity of the scene, especially with respect to topography and land use. A comparison of algorithms representative of the current state-of-the-art in the field of change detection is performed. In this report, we describe the three test areas used in the project, the methodology used for assessing and comparing the methods, and the results that have been obtained with the four different approaches. The results are thoroughly analysed and a discussion enables to bring out conclusions and promising directions to follow for building an optimal operational system in the future. 2- This final report of the EuroSDR project "NEWPLATFORMS" gives an overview of a very promising new class of platforms for remote sensing, unmanned aircraft systems or UAS. Although unmanned aircraft have been around for many years, they are now becoming available for scientific and civil use, as low-altitude systems that provide an "eye in the sky" for small photogrammetry projects (the size of a construction site), and for the development of new remote sensing applications. First, the concept of an UAS is described. It is not just about the aircraft, but also about its ground control system (which gives the remote pilot the ability to control the aircraft). Two ways of classification are given, one more descriptive (based on physical properties such as total mass, range, endurance, etc.), and one based on the flight clearance potential. The latter is important, since there is a total lack of coherent regulations across Europe. A summary of the regulatory authorities is presented in chapter 2. The report concludes with a review of the (potential) applications in remote sensing that can be conducted with UAS. Numéro de notice : 15521 Affiliation des auteurs : IGN (1940-2011) Thématique : IMAGERIE Nature : Rapport d'étude technique En ligne : http://www.eurosdr.net/publications Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62750 ContientRéservation
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Code-barres Cote Support Localisation Section Disponibilité 15521-01 35.46 Livre Centre de documentation Télédétection Disponible Documents numériques
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Detection of unregistered buildings ... - pdf auteurAdobe Acrobat PDF
Titre : Digital camera calibration Type de document : Rapport Auteurs : Michael Cramer, Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : July 2009 Collection : EuroSDR official publication, ISSN 0257-0505 num. 55 Importance : 257 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] caméra numérique
[Termes IGN] chambre métrique
[Termes IGN] étalonnage de chambre métrique
[Termes IGN] étalonnage géométriqueIndex. décimale : 35.10 Acquisition d'images Numéro de notice : 21792 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Rapport d'étude technique En ligne : http://www.eurosdr.net/sites/default/files/uploaded_files/eurosdr_publication_nd [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75583 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21792-01 35.10 Livre Centre de documentation Télédétection Disponible PermalinkEuroSDR & ISPRS Workshop Geosensor Networks, February 20 - 22 2008, Hannover Germany / Christian Heipke (2008)PermalinkPermalinkPermalinkInternational Calibration and Orientation Workshop, EuroCOW 2008, 30 janvier - 1er février 2008, Castelldefels, Espagne / Ismael Colomina (2008)PermalinkWorkshop on production partnership management, Ordnance Survey, Southampton, 7-9 November 2007, England / Ray Patrucco (2008)PermalinkReliability of direct georeferencing: An overview of the current approaches and possibilities / Jan Skaloud (2006)PermalinkReliability of direct georeferencing: A case study on practical problems and solutions / Klaus Legat (2006)PermalinkPermalinkPermalink