Centre dedocumentation
scientifique

Automated generalization of relief in the GIS / Pascale Monier (1996) 

Public contenu dans Geographic information systems in urban regional and environmental planning, First international conference, Samos, Greece, April 1996 / Timos Sellis (1996) Titre : Automated generalization of relief in the GIS Type de document : Article/Communication Auteurs : Pascale Monier, Auteur Congrès : 1st international conference on Geographic Information Systems in Urban Regional and Environmental Planning (19 - 21 avril 1996; Samos, Grèce), Commanditaire Editeur : [s.l.] : [s.n.] Année de publication : 1996 Importance : pp 167 - 177 Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes descripteurs IGN] généralisation cartographique [Termes descripteurs IGN] géomorphologie locale [Termes descripteurs IGN] modèle numérique de terrain [Termes descripteurs IGN] raisonnement spatial [Vedettes matières IGN] Généralisation Résumé : (Auteur) A very core root of the mapping process, generalization, historically a cartographic operation, is now more and more required in automated mapping: when geographic data volumes have to be reduced, when a thematic application has to be produced, when a change of scale or resolution has to be performed, or when different databases have to be combined, generalization principles apply. It takes a wider and wider place in environmental applications. Besides road modeling, or town modeling, correct terrain modeling is needed. Terrain is classically represented by a digital terrain model, which however turns out to be insufficient for generalization purposes. This paper tries to show that terrain models have to be enriched through complementary geomorphologic knowledge and that generalization operators have to be redesigned accordingly. This knowledge is deduced from observable relationships between characteristic features, and integrated as characteristic information into a plane-by-plane description structure adapted to generalization reasoning and processing. Numéro de notice : C1996-046 Affiliation des auteurs : IGN (1940-2011) Thématique : GEOMATIQUE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90085

Documents numériques

peut être téléchargé Automated generalization of relief in the GIS Adobe Acrobat PDF

Geographic information systems in urban regional and environmental planning, First international conference, Samos, Greece, April 1996 / Timos Sellis (1996)

Public Titre : Geographic information systems in urban regional and environmental planning, First international conference, Samos, Greece, April 1996 Type de document : Actes de congrès Auteurs : Timos Sellis, Editeur scientifique ; Dimitri Georgoulis, Editeur scientifique Congrès : 1st international conference on Geographic Information Systems in Urban Regional and Environmental Planning (19 - 21 avril 1996; Samos, Grèce), Commanditaire Editeur : [s.l.] : [s.n.] Année de publication : 1996 Importance : 286 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes descripteurs IGN] aménagement régional [Termes descripteurs IGN] base de données localisées [Termes descripteurs IGN] modèle conceptuel de données localisées [Termes descripteurs IGN] urbanisme Index. décimale : CG1996 Actes de congrès en 1996 Note de contenu : 1 - Urban Planning and GIS I 2 - GIS Technology 3 - Applications of GIS I 4 - Urban Planning and GIS II 5 - Modeling in GIS 6 - Large GIS Applications 7 - Applications of GIS II 8 - Data structures and languages for geographical databases Numéro de notice : 21363 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/URBANISME Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90075

Contient

• Automated generalization of relief in the GIS / Pascale Monier (1996) 
• Modelling a multi-scale database with scale-transition relationships / Thomas Devogele (1996) 

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21363-01	CG1996	Livre	Centre de documentation	Congrès	Exclu du prêt

Modelling a multi-scale database with scale-transition relationships / Thomas Devogele (1996) 

Public contenu dans Geographic information systems in urban regional and environmental planning, First international conference, Samos, Greece, April 1996 / Timos Sellis (1996) Titre : Modelling a multi-scale database with scale-transition relationships Type de document : Article/Communication Auteurs : Thomas Devogele, Auteur ; Laurent Raynal, Auteur Congrès : 1st international conference on Geographic Information Systems in Urban Regional and Environmental Planning (19 - 21 avril 1996; Samos, Grèce), Commanditaire Editeur : [s.l.] : [s.n.] Année de publication : 1996 Importance : pp 83 - 93 Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes descripteurs IGN] base de données localisées [Termes descripteurs IGN] représentation multiple Résumé : (Auteur) Nowadays, geographic databases (i.e. collections of geographic data together with the methods to manage these data) are very similar to maps, i.e. they are the same particular, somewhat closed, abstraction of the real world. While geographic database users and mapping agencies have to handle multiple representations of the same geographic reality at multiple scales, so far only collections of separate databases are available. In order to use . these databases most profitably, the concept of scale-transition relationship is introduced : it can be .defined as a connection between two sets of elements (types, classes or objects) representing the same phenomenon of the real world, that is equipped with a sequence of generalisation operations. To preserve this sequence of generalisation operations is essential since it explains the transformation procedure to go from one representation (a set of elements) to another (another set of elements). This concept makes it possible to construct a multi-scale database from existing mono-scale databases (without loss of information) and provides an advanced navigation process between representations. A true multi-scale reasoning and modelling should definitely take scale-transition relationships into account. Numéro de notice : C1996-045 Affiliation des auteurs : IGN (1940-2011) Thématique : GEOMATIQUE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90084

Documents numériques

peut être téléchargé Modelling a multi-scale database with scale-transition relationships Adobe Acrobat PDF