Synonyms
Model generalization; Conceptual generalization of databases; Cartographic generalization; Geographic data reduction; Multiple resolution database
Definition
Model generalization is used to derive a more simple and more easy to handle digital representation of geometric features [1]. It is being applied mainly by National Mapping Agencies to derive different levels of representations with less details of their topographic data sets, usually called Digital Landscape Models (DLM's). Model generalization is also called geodatabase abstraction, as it relates to generating a more simple digital representation of geometric objects in a database, leading to a considerable data reduction. The simplification refers to both the thematic diversity and the geometric complexity of the objects. Among the well known map generalization operations the following subset is used for model generalization: selection, (re-)classification, aggregation, and area collapse. Sometimes, also the...
Recommended Reading
Grünreich, D.: Development of computer-assisted generalization on the basis of cartographic model theory. In: Müller J.C., Lagrange J.P., Weibel R. (eds.) GIS and Generalization – Methodology and Practice, pp. 47–55. Taylor & Francis, London (1995)
Spiess, E.: The need for generalization in a gis environment. In: Müller J.C., Lagrange J.P., Weibel R. (eds.) GIS and Generalization – Methodology and Practice, pp. 31–46. Taylor & Francis, London (1995)
Mackaness, W.A., Sarajakoski, L.T., Ruas, A.: Generalisation of Geographic Information: Cartographic Modelling and Applications. Published on behalf of the International Cartographic Association by Elsevier, Amsterdam (2007)
Urbanke, S., Dieckhoff, K.: The adv-project atkis generalization, part model generalization (in German). Kartographische Nachrichten 56(4):191–196 (2006)
David, E., Erickson, J.: Raising roofs, crashing cycles, and playing pool: applications of a data structure for finding pairwise interactions. In: SCG 98: Proceedings of the 14th Annual Symposium on Computational Geometry. 58–67 (1998)
Chin, F.Y., Snoeyink, J., Wang, C.A.: Finding the medial axis of a simple polygon in linear time. In: Springer-Verlag (ed.) In ISAAC 95: Proceedings of the 6th International Symposium on Algorithms and Computation, 382–391, London, UK, 1995
Haunert, J.H., Sester, M.: Area collapse and road centerlines based on straight skeletons. Geoinformatica (2007, in press)
van Oosterom, P.: The gap-tree, an approach to ‘on-the-fly’ map generalization of an area partitioning. [20], 120–132
Podrenek, M.: Aufbau des DLM50 aus dem BasisDLM und Ableitung der DTK50 – Lösungsansatz in Niedersachsen. Kartographische Schriften Band 6, pp. 126–130. Kirschbaum Verlag, Bonn (2002)
van Smaalen, J.: Automated Aggregation of Geographic Objects. AÂ new Approach to the Conceptual Generalisation of Geographic Databases. PhD thesis, Wageningen University, The Netherlands (2003)
Haunert, J.H., Wolff, A.: Generalization of land cover maps by mixed integer programming. In: Proceedings of 14th International Symposium on Advances in Geographic Information Systems, Arlington, Virginia, USA, 2006
Bundy, G., Jones, C., Furse, E.: Holistic generalization of large-scale cartographic data. [20], 106–119
Douglas, D., Peucker, T.: Algorithms for the reduction of the number of points required to represent a digitized line or its caricature. The Canadian Cartographer 10(2):112–122 (1973)
Brenner, C., Sester, M.: Continuous generalization for small mobile displays. In: Agouris, P., Croitoru, A. (eds.) Next Generation Geospatial Information, pp. 33–41, Taylor & Francis (2005)
Yang, B.: A multi-resolution model of vector map data for rapid transmission over the internet. Computers & Geosciences 31(5): 569–578 (2005)
Balley, S., Parent, C., Spaccapietra, S.: Modelling geographic data with multiple representation. International Journal of Geographical Information Science 18(4):327–352 (2004)
Hampe, M., Sester, M., Harrie, L.: Multiple representation databases to support visualisation on mobile devices. In: International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, vol. 35, ISPRS, Istanbul (2004)
Sheeren, D., Mustière, S., Zucker, J.D.: Consistency assessment between multiple representations of geographical databases: a specification-based approach. In: Proc. of the 11th International Symposium on Spatial Data Handling, Leicester, UK, 2004
Haunert, J.H., Sester, M.: Propagating updates between linked datasets of different scales. In: Proceedings of 22nd International Cartographic Conference, 9–16, La Coruna, Spain, Juli 2005
Müller, J.C., Lagrange, J.P., Weibel, R. (eds.): GIS and Generalization – Methodology and Practice. In: Müller J.C., Lagrange J.P., Weibel R. (eds.) GIS and Generalization – Methodology and Practice, Taylor & Francis, London (1995)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer-Verlag
About this entry
Cite this entry
Sester, M. (2008). Abstraction of GeoDatabases. In: Shekhar, S., Xiong, H. (eds) Encyclopedia of GIS. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35973-1_13
Download citation
DOI: https://doi.org/10.1007/978-0-387-35973-1_13
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-30858-6
Online ISBN: 978-0-387-35973-1
eBook Packages: Computer ScienceReference Module Computer Science and Engineering