Centre de documentation
scientifique

Geo-Informationssysteme mit großmaßstäbigem Anwendungsbezug / M. Scheu (2000)

Public Titre : Geo-Informationssysteme mit großmaßstäbigem Anwendungsbezug Titre original : Large scale oriented Geographic Information Systems Type de document : Thèse/HDR Auteurs : M. Scheu, Auteur Mention d'édition : 1 Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2000 Collection : DGK - C Sous-collection : Dissertationen num. 522 Importance : 123 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-9561-8 Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] Allemagne [Termes IGN] cadastre étranger [Termes IGN] grande échelle [Termes IGN] mise à jour [Termes IGN] système d'information géographique Index. décimale : 30.42 Gravimétrie Résumé : (Auteur) This work examines issues relating to large scale, cadastre oriented GIS. This technology is widely used in the fields of administration, utility industries and public transportation companies. All over the world digital cadastral maps (DCM) are rapidly moving to multipurpose systems. These maps are now widely used by the utilities and local government for planning, asset mapping, monitoring and documentation purposes. The Utility Industry (UI) represents a group of highly experienced users of GIS-Technology with specific requirements for their digital mapping based on spatial cadastral data. Most utility companies rely on the custodians for the supply of an up to date DCM as reference layers in their GIS. One of the main tasks in the Management of Spatial Data (SDM) is the harmonisation of existing GIS-Applications and an acceleration of business processes within companies and public administrations. This management allows an increase in the value of spatial data by combining basic data and asset data sources. Basically, the acquisition of spatial and aspatial data requires a very large effort introducing this kind of GIS. Chapter 3 determines that the aspect of maintenance is underestimated in most GIS-projects. Of central interest is the transfer of incremental update and upgrade data from the custodian to the user and possible solutions for the Associativity Problem. Basics and special strategies of adjustment techniques in processing spatial data are key issues of chapter 4. Advantages like blunder detection or automation in data processing are presented. Without doubt adjustment strategies are a useful tool for data acquisition and maintenance in GIS. The special task of maintaining associativity between basic and asset data in an UI-GIS is discussed. The impact of key Mainstream IT technologies, namely databases and computer networks, to GIS are determined in chapter 5. Both of them are serving special techniques for storing and distribution of spatial data. Nowadays database management systems support the handling of spatial data using special data sets. The technology of the World Wide Web provides visualisation and distribution of spatial data across the Internet/Intranet. This work concludes with the result that geodetic skills are indispensable for an operational GIS. This concerns in particular the acquisition, integration and maintenance of spatial data. Numéro de notice : 27821 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=56445

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
27821-01	30.42	Livre	Centre de documentation	Géodésie	Disponible

Erfassung und Rekonstruktion raumbezogener Objekte in Vektorform / M. Scheu (1996)

Public Titre : Erfassung und Rekonstruktion raumbezogener Objekte in Vektorform Titre original : [Acquisition et reconstruction des objets spatiaux basée sur des données vectorielles] Type de document : Thèse/HDR Auteurs : M. Scheu, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 1996 Collection : DGK - C Sous-collection : Dissertationen num. 451 Importance : 136 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-9494-9 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] données vectorielles [Termes IGN] objet géographique [Termes IGN] objet géographique complexe [Termes IGN] reconstruction 3D [Termes IGN] vectorisation Index. décimale : 33.30 Photogrammétrie numérique Résumé : (Auteur) The transformation of conventional analog maps, plans and registers into a single Spatial Information System is a problem of data integration. The problem is illustrated using the examples of utility networks and land-registry data. The heterogeneous quality of the spatial data, demonstrates the need to design the data acquisition approach systematically. The technique, called reconstruction, has been developed for spatial objects using a step-by-step approach. The data acquisition is split into different phases. From this range specific discussion of automation strategies is made for two steps. Point, line and polygon entities can be composed automatically in terms of constituent digitized points and arcs using several algorithms. Additionally, characteristic values have been determined from land-registry polygonal entities. This could allow the allocation of the polygons to one special class of object. The registration of measurements is realized using a new documentation system. This opens up the possibility to document spatial data without the necessity for map-orientated location, or global coordinates. A study was performed which verified the practicality of the proposed method. Additionally, guidelines for an appropriate test implementation are provided. The system can be used for both the acquisition and presentation of the geometrical position of utility lines and house connections. Spatial Information Systems are composed of several components: hardware, software and data. This work focuses on spatial data due to its very high value and durability compared to the others. The compact and systematic data orientated acquisition strategies developed, provide the most appropriate solution. Numéro de notice : 28038 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=63385

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
28038-01	33.30	Livre	Centre de documentation	Photogrammétrie - Lasergrammétrie	Disponible
28038-02	33.30	Livre	Centre de documentation	Photogrammétrie - Lasergrammétrie	Disponible