Inventaire


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CHADE: Change detection for updates of vector database through multi-level region-based classification of VHR data

Units : Geospatial Analysis | ULB568



Description :


Up-to-date knowledge of land cover is an important tool for the various planning authorities with responsibilities for the
management of territory. The geospatial objects are changing over time and the land cover information (vector geospatial database) has to
be up-date periodically.The vector geospatial databases at a local scale in Belgium (e.g. Agriculture Directorate-General crop
field database, National Geographic Institute 1/10000 topographic maps, Projet Informatique de Cartographie Continue of the Walloon
Ministry of Transport and Equipment) were carried out by digital cartographic production process based on aerial photographs, and
the update of these databases is now at the agenda.The VHR satellite data are, since 1999, capable to meet the mapping and
monitoring needs of municipal and regional planning agencies. Indeed, these data from the sensors Ikonos, QuickBird, OrbView-3, and in
near future, the Pléiades-HR French sensors, have spatial resolution lower than 5 m in multispectral mode and lower than 1 m in
panchromatic mode.In this context, this post-doctoral research project suggests to use region based classification of VHR satellite
data in different change detection processes for updates of vector database.

List of lessors :


  • Autres ministères fédéraux

  • Autres fonds publics belges