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Proceedings of the 2nd international symposium on spatial data quality '03, SDQ 2003, 19 - 20 March 2003, The Hong Kong Polytechnic University, Hong Kong / Wenzhong Shi (2003)

Public Titre : Proceedings of the 2nd international symposium on spatial data quality '03, SDQ 2003, 19 - 20 March 2003, The Hong Kong Polytechnic University, Hong Kong Type de document : Actes de congrès Auteurs : Wenzhong Shi, Éditeur scientifique ; Michael F. Goodchild, Éditeur scientifique ; Peter F. Fisher, Éditeur scientifique Editeur : Hong Kong [China] : The Hong Kong Polytechnic University Année de publication : 2003 Conférence : ISSDQ 2003, 2nd international symposium on spatial data quality 19/03/2003 20/03/2003 Hong-Kong Importance : 536 p. Format : 17 x 25 cm ISBN/ISSN/EAN : 978-962-367-374-7 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] analyse spatiale [Termes IGN] erreur de positionnement [Termes IGN] estimation de précision [Termes IGN] image satellite [Termes IGN] imprécision des données [Termes IGN] imprécision géométrique [Termes IGN] incertitude des données [Termes IGN] modèle numérique de surface [Termes IGN] précision des données [Termes IGN] qualité des données Index. décimale : CG2003 Actes de congrès en 2003 Note de contenu : 1 - Keynote speeches 2 - Modeling uncertainties in spatial objects and topological relationships 3 - Measuring accuracy of data from high resolution satellite imageries 4 - Modeling position error 5 - Analysis of error in multi-sensor and multi-angle remote sensing imageries 6 - Managing metadata and standardization 7 - Understanding uncertainties in real world objects 8 - Measuring accuracy of DEM 9 - Handling uncertainties in land resources monitoring 10 - Detecting uncertainties in spatial analysis and data mining 11 - Algorithms for spatial data processing 12 - Managing quality in spatial data infrastructure 13 - Estimating accuracy in remote sensing Image classification Numéro de notice : 21373 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90096

Contient

• Knowledge imprecision for cartographic generalisation assessment / Sylvain Bard (2003) 

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21373-01	CG2003	Livre	Centre de documentation	Congrès	Disponible

Geometrical matching of polygons in GISs and assessment of geometrical quality of polygons / Atef Bel Hadj Ali (1999) 

Public contenu dans Proceedings of the International Symposium on Spatial Data Quality '99, ISSDQ 1999, 18th to 20th March 1999, The Hong Kong Polytechnic University, Hong Kong / Wenzhong Shi (1999) Titre : Geometrical matching of polygons in GISs and assessment of geometrical quality of polygons Type de document : Article/Communication Auteurs : Atef Bel Hadj Ali , Auteur ; François Vauglin , Auteur Editeur : Hong Kong [China] : The Hong Kong Polytechnic University Année de publication : 1999 Conférence : ISSDQ 1999, 1st International Symposium on Spatial Data Quality 18/07/1999 20/07/1999 Hong-Kong Hong-Kong Importance : pp 33 - 44 Format : 17 x 25 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] appariement automatique [Termes IGN] appariement géométrique [Termes IGN] BD Carto [Termes IGN] BD Topo [Termes IGN] Corine Land Cover [Termes IGN] distance (mathématique) [Termes IGN] indicateur de qualité [Termes IGN] lever cadastral [Termes IGN] polygone [Termes IGN] qualité géométrique (image) Résumé : (auteur) The production of geographic information is a complex process that can not be considered as deterministic because several digitization produce several different data sets. Geographic Information Systems enable the handling of various data, which have to be matched prior to their use. This paper presents a geometric matching algorithm for polygonal surfaces. Our thought process is to handle the surface in itself without focusing on the information about its contour. This algorithm is based on a mathematical distance between polygons. This distance makes it possible to compute two thresholds and a matching table that is defined as a list of polygons from one data set that may be matched to polygons of the other data set. The thresholds are considered as the tuning parameters of this algorithm. They are used to filter the matching table in order to eliminate non-relevant links to produce the matching. The matching process takes into account various cardinality such as 1:1 or 1:n or n:l. Based on the matching table, a quality map of a controlled data set has been produced. This quality assessment is based on a similar measurement of the mathematical distance between polygons. This algorithm has been tested and validated on various data sets, including the land-use layer of French Cartographic Database BDCarto® and Corine Land-Cover Database, or buildings from the French Topographic database BDTopo® and the French Cadaster. This paper presents also the results of these tests. Numéro de notice : C1999-071 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92370

Documents numériques

peut être téléchargé Geometrical matching of polygons ... - scan Adobe Acrobat PDF

A practical study on precision and resolution in vector geographical databases / François Vauglin (1999) 

Public contenu dans Proceedings of the International Symposium on Spatial Data Quality '99, ISSDQ 1999, 18th to 20th March 1999, The Hong Kong Polytechnic University, Hong Kong / Wenzhong Shi (1999) Titre : A practical study on precision and resolution in vector geographical databases Type de document : Article/Communication Auteurs : François Vauglin , Auteur Editeur : Hong Kong [China] : The Hong Kong Polytechnic University Année de publication : 1999 Conférence : ISSDQ 1999, 1st International Symposium on Spatial Data Quality 18/07/1999 20/07/1999 Hong-Kong Hong-Kong Importance : pp 84 - 94 Format : 17 x 25 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] base de données vectorielles [Termes IGN] BD Carto [Termes IGN] données maillées [Termes IGN] échelle des données [Termes IGN] pouvoir de résolution géométrique [Termes IGN] précision des données [Termes IGN] précision géométrique (imagerie) Résumé : (auteur) Vector geographical databases are designed to represent the world by means of points, lines, polygons, and attributes. This fundamental information is highly structured in most geographical information systems, in which complex concepts like topology can be implemented. This paper describes a study on precision and resolution of vector data. Precision and resolution can be defined easily for raster data or even for classical paper maps. Their definition for digital vector data is presented as a consequence of the corresponding definitions for classical paper maps and as a result of production processes and human perception. Trying to make precision and resolution compatible is then presented as an optimisation issue for geographical databases. A tool providing a simple solution is proposed as well as a classification of the problems that are raised. Numéro de notice : C1999-073 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92371

Documents numériques

peut être téléchargé A practical study on precision ... pdf auteur Adobe Acrobat PDF

Proceedings of the International Symposium on Spatial Data Quality '99, ISSDQ 1999, 18th to 20th March 1999, The Hong Kong Polytechnic University, Hong Kong / Wenzhong Shi (1999)

Public Titre : Proceedings of the International Symposium on Spatial Data Quality '99, ISSDQ 1999, 18th to 20th March 1999, The Hong Kong Polytechnic University, Hong Kong Type de document : Actes de congrès Auteurs : Wenzhong Shi, Éditeur scientifique ; Michael F. Goodchild, Éditeur scientifique ; Peter F. Fisher, Éditeur scientifique Editeur : Hong Kong [China] : The Hong Kong Polytechnic University Année de publication : 1999 Conférence : ISSDQ 1999, 1st International Symposium on Spatial Data Quality 18/07/1999 20/07/1999 Hong-Kong Hong-Kong Importance : 628 p. Format : 17 x 25 cm ISBN/ISSN/EAN : 978-962-367-253-5 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Information géographique [Termes IGN] analyse d'image numérique [Termes IGN] base de données localisées [Termes IGN] contrôle qualité [Termes IGN] incertitude des données [Termes IGN] incertitude géométrique [Termes IGN] modèle numérique de surface [Termes IGN] qualité des données [Termes IGN] qualité des metadonnées Index. décimale : CG1999 Actes de congrès en 1999 Note de contenu : 1- Error in registration and matching 2- Communicating uncertaintly and resolution 3- Spatial data quality control 4- Quality management 5- Accuracy of DEM 6- Visualization of uncertainty 7- Positionnal error models 8- Reporting Spatial data quality 9- Errors in thematic data 10- Errors in forest applications 11- Model spatial objects with uncertainty 12- Uncertainty in spatial analysis 13- Reasoning & decision making with uncertainty 14- Uncertainty in image analysis 15- Pre-symposium workshops 16- Panel discussion Numéro de notice : 24663 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92369

Contient

• Geometrical matching of polygons in GISs and assessment of geometrical quality of polygons / Atef Bel Hadj Ali (1999) 
• A practical study on precision and resolution in vector geographical databases / François Vauglin (1999) 
• Quality management, data quality and users metadata for geographical information / Laure Dassonville (1999)

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
24663-01	CG.99	Livre	Centre de documentation	Congrès	Disponible

Quality management, data quality and users metadata for geographical information / Laure Dassonville (1999)

Public contenu dans Proceedings of the International Symposium on Spatial Data Quality '99, ISSDQ 1999, 18th to 20th March 1999, The Hong Kong Polytechnic University, Hong Kong / Wenzhong Shi (1999) Titre : Quality management, data quality and users metadata for geographical information Type de document : Article/Communication Auteurs : Laure Dassonville, Auteur Editeur : Hong Kong [China] : The Hong Kong Polytechnic University Année de publication : 1999 Conférence : ISSDQ 1999, 1st International Symposium on Spatial Data Quality 18/07/1999 20/07/1999 Hong-Kong Hong-Kong Importance : pp 130 - 143 Format : 17 x 25 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Information géographique [Termes IGN] Comité européen des responsables de la cartographie officielle [Termes IGN] gestion de la qualité [Termes IGN] norme ISO 9000 [Termes IGN] qualité des données [Termes IGN] qualité des metadonnées Résumé : (auteur) CERCO (Comite Europeen des Responsables de la Cartographie Officielle) gathers participants from European National Mapping Agencies. It has created several working groups for exchanging information and for discussing geographical information issues. One of them, the Working Group on Quality was created in September 1997 and is working on three main subjects: "Quality management and ISO 9000", "Data quality issues" and "Standards". This paper presents elements which have been given to the questions raised up to now and emphasizes common and different points of view of the National Map Agencies. The first subject consists of analysing the opportunity to implement ISO 9000 for National Map Agencies. A questionnaire has been written and this paper presents the results. The second subject aims to share experience about geographical data quality during the entire life cycle of a product such as cadastre, topographic products or orthophotography. A lot of topics raised: methodologies for identifying users requirements or processes to evaluate the fitness for use. The point is to identify relevant questions among all these issues. The third subject concerns experience in applying the two CEN/TC 287 standards: Metadata and Quality. Metadata standards give very useful common structures for geographical dataset description. This group decided to focus on a subset of the most comprehensive standards at a level named "core-metadata", presented in this paper. Numéro de notice : C1999-072 Affiliation des auteurs : IGN (1940-2011) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92372