Some Requirements for Geographic Information Systems: A Photogrammetric Point of View

In this article the authors describe data modeling, the integration of geographic information science (GIS) and photogrammetry, the updating and refinement of a geospatial database, and data integration. The authors claim that data modeling needs to be carried out in 3D based on a topologic data structure with the possibility for incorporating change. Photogrammetric operations such as the generation of digital terrain models or the manual and automatic acquisition of vector data from imagery should be considered as modules of future GIS, which should also have efficient mechanisms for incremental updating and versioning. The authors' proposal is illustrated with the help of three examples: one describing data acquisition and modeling in an interdisciplinary project, one dealing with quality control and update using imagery, and the last one presenting an algorithm for the integration of a 2D data set and a DTM. The authors conclude by stressing that a modern geographic information system needs to be able to cope with imagery and contain modules for acquisition, update, and processing of 3D geo-objects from imagery, traditionally considered as part of a digital photogrammetric workstation.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 185-195
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01002063
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 14 2005 10:22AM