Automated revsion of GIS databases

ABSTRACT

Digital spatial data are underlying strong temporal changes. The typical approach of updating these changes is to check the data manually for their correctness by superimposing them on up-to-date orthophotos. The update cycles of large data sets are in the range of several years. At present shorter update cycles are unrealizable for two reasons. The manual inspection of the data is very cost- and time-consuming and aerial photographs for large areas are very often not available in the needed time intervals. However, a decisive turn can be seen in data availability. With new satellite systems, it will be possible to provide up-to-date high resolution orthophotos in short time periods and high quality in the near future. At September 24th, 1999, the optical high resolution satellite IKONOS, developed by the company Space Imaging (http://www.spaceimaging.com), was brought successfully into orbit. Further systems as for example Quickbird of the company EarthWatch, OrbView 3 and 4 of the company ORBIMAGE or EROS A and B of the company West Indian Space will follow shortly (see also [9, 10]). The data which will be delivered from these new satellite systems will close the gap between existing medium resolution satellite data (as for example Spot, Landsat or IRS-1C) and very high resolution data from airborne systems. In near future users will be able to select images from several providers to use them for their mapping tasks. In order to eliminate the still existing bottle-neck of manual updating of GIS data, the Institute of Photogrammetry (ifp), University of Stuttgart developed a software package which is presented in this article.

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INDEX TERMS

Primary Classification:
  H. Information Systems
  H.2 DATABASE MANAGEMENT
      H.2.8 Database applications
          Subjects: Spatial databases and GIS

Additional Classification:
  I. Computing Methodologies
  I.2 ARTIFICIAL INTELLIGENCE
      I.2.9 Robotics
          Subjects: Sensors
  I.4 IMAGE PROCESSING AND COMPUTER VISION
  I.5 PATTERN RECOGNITION
      I.5.2 Design Methodology
          Subjects: Classifier design and evaluation

General Terms:
Design, Management, Measurement, Performance, Theory

Keywords:
ATKIS, GIS, classification, matching, remote sensing, update