Geo-spatial Information Science

, Volume 6, Issue 3, pp 32–36 | Cite as

A COM-based framework for management, analysis and visualization of large scope digital elevation models

  • Wang Yongjun
  • Gong Jianya


This paper presents a component object model (COM) based framework for managing, analyzing and visualizing massive multi-scale digital elevation models (DEMs). The framework consists of a data management component (DMC), which is based on RDBMS/ORDBMS, a data analysis component (DAC) and a data render component (DRC). DMC can manage massive multi-scale data expressed at various reference frames within a pyramid database and can support fast access to data at variable resolution. DAC integrates many use-ful applied analytic functions whose results can be overlaid with the 3D scene rendered by DRC, DRC provides view-dependent data paging with the support of the underlying DMC and organizes the potential visible data at different levels into rendering.

Key Words

component object model digital elevation model visualization geographic information system (GIS) 


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  1. 1.
    Zhu Q, Li Z L, Gong J Y, et al. (1999) Review on the scheme for “the updating and database building of 1∶10 000 digital elevation model”.Journal of Wuhan Technical University of Surveying and Mapping, 24 (2): 129–133 (in Chinese)Google Scholar
  2. 2.
    Gong J Y (2001) Spatial database management system: concept and perspective.Science of Surveying and Mapping, 26 (3): 4–9 (in Chinese)Google Scholar
  3. 3.
    Chen S, Jing N, Sun M Y, et al. (1998) Design and implementation of X-2000 spatial database system.Journal of National University of Defense Technology, 20 (3): 70–74 (in Chinese)Google Scholar
  4. 4.
    ESRI (2002) ArcSDE 8.1 questions and answers, http://arconline. esri. com/arconline/documenttation/sde_arcsde-qa.pdfGoogle Scholar
  5. 5.
    Faust N, Ribarsky W, Jiang T Y, et al. (2001) Real-time global data model for the digital earth. Proceedings of the International Conference on Discrete Global Grids. Scholar
  6. 6.
    Koller D, Lindstrom E, Ribarsky W, et al. (1995) Virtual GIS: a real-time 3D geographic information system. IEEE, Proceedings Visualization '95, California: Computer Society Press. 94–100Google Scholar
  7. 7.
    Shumilov S, Breunig M (2000) Integration of 3D geoscientific visualisation tools with help of a Geo-database kernel. The 6th EC-GI & GIS Workshop “The Spatial Information Society—Shaping the Future Lyon”, Lyon,Google Scholar

Copyright information

© Wuhan University of Technology 2003

Authors and Affiliations

  • Wang Yongjun
    • 1
  • Gong Jianya
    • 1
  1. 1.State Key Laboratory of Information Engineering in Surveying, Mapping and Remote SensingWuhan UniversityWuhanChina

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