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The 3rd ISPRS Workshop on Dynamic and Multi-Dimensional GIS & the 10th Annual Conference of CPGIS on Geoinformatics
Chen, Jun

ISPRS, Vol.34, Part 2W2, “Dynamic and Multi-Dimensional GIS", Bangkok, May 23-25, 2001
an ideal tool for decision support system for regional flood risk
assessment. Photogrammetry and remote sensing provide a
unique combination of DEM and DOM, which allows the use of
land-use information in the estimation of flood propagation. This
is a major advantage over the data sets, and allows a
considerable refinement of the flood estimation process with little
additional processing.
Fig.4 creating DLG with scanning cartographic digitization
4. Conclusion
With the development of modern cities, more and more
advanced technologies are applied to UDSS.4D products
generated from photogrammetry and remote sensing has
constituted a decision support information system. This
information has provided anew perspective to decision-makers,
planners, government officials, and the public. In effect, UDSS
are being used as one of the key element by decision-makers for
urban planning and management, environment protection.
Additionally, the accessibility to 4D products, as well as digital
image has afforded those entities and individuals who wish to
utilize these data and image. Information can be provided by
governmental website.
To this extent, research and development in new spatial
data mining, interoperability, infrastructure, standards, and
widespread applications are all valuable to the urban planning
and environmental management. We believe that have
successful in creating UDSS, through 4D and associated
enabling technologies.
The study work we have done constitute a first step in both
creating UDSS and its application. From this perspective, we see
where much more work needs to be done streamlining the
processing and handling of photogrammetry and remote sensing
data to make the digital products generated more efficient and
easier to use and analyze, in particular, 3D city model and 3D
spatial analysis. Additionally, more time and added funding will
be needed to establish cybercity.
4D products derived from 3S technologies used in UDSS
have meaning for those entrusted with managing our urban
resources and protecting urban environment. UDSS created by
4D and relevant technologies will benefit us all.
Fig.5 real-time flood risk analysis for UDSS using 4D techniques
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