Managing Collapsed Surfaces in Spatial Constraints Validation  (2010)

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Authors:
Alberto Belussi, Sara Migliorini, Mauro Negri, Giuseppe Pelagatti

Title:
Managing Collapsed Surfaces in Spatial Constraints Validation

Year:
2010

Type of item:
Articles from congress or conference papers

Tipologia ANVUR:
Contributo in Atti di convegno

Nations of authors:
ITALIA

Language:
Inglese

Category ISI-CRUI:
Computer Science & Engineering

Format:
A Stampa

Congresso:
The 13th AGILE International Conference on Geographic Information Science

Place:
Guimarães, Portugal

Period:
11-14 May, 2010

Publisher:
Springer

ISBN:
9783642123252

Page numbers:
259-278

Number of pages:
20

ISI publications:
No

Keyword:
Spatial database,collapsed geometry,spatial integrity constraints validation

Short description of contents:
In recent years many Spatial Data Infrastructures (SDI) have been built or are under construction in several European countries and geographical data have been collected in many different ways, sometimes following tra-ditional approaches (like, remote sensing techniques of photogrammetry and topography) or more “up to date” methods (like, GPS or others). How-ever, regardless of the used methods, the geometries resulting from the surveying process describe the geographic object according to the consid-ered accuracy level; therefore, in some cases such geometries, usually modeled as surfaces, are collapsed to set of curves and/or points. In this paper we propose a methodology which aims to handle this col-lapsed behavior of surfaces by preserving the conceptual schema of the da-tabase, which means that we preserve the geometric types (i.e., the surface type) of the spatial attributes even if their values can collapse. Moreover, we extend the semantics of integrity constraints included in the conceptual model in order to handle during data validation the collapsed surfaces as much as possible as real surfaces.

Product ID:
56325

Id Ugov:
342465

Deposited On:
October 29, 2013

Last Modified:
October 29, 2013

Related projects
Title Department People in charge
Studio di metodologie e sviluppo di strumenti funzionali alla creazione e gestione di Basi di Dati Geografiche (DB geotopografici) da parte degli Enti Pubblici Italiani Department Informatica Alberto Belussi
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