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W. Wagner, M. Hollaus, K. Steinnocher, C. Hoffmann:
"Determination of urban land use based on airborne laser scanner and GIS data";
Talk: Wissenschaftlich-Technische Jahrestagung der DGPF, Muttenz, Basel; 2007-06-19 - 2007-06-21; in: "Dreiländertagung; Von der Medizintechnik bis zur Planetenforschung - Photogrammetrie und Fernerkundung für das 21. Jahrhundert", E. Seyfert (ed.); Publikationen der Deutschen Gesellschaft für Photogrammetrie, Fernerkundung und Geoinformation e.V., Band 16 (2007), ISSN: 0942-2870; 241 - 250.

The dynamic of urban sprawl represents a major challenge for regional and urban planners who search for reliable techniques and tools to monitor, describe and evaluate these processes. Available data sources (e.g. digital cadastral map, zoning plan) do not satisfy the needs of the growing demand for up-to-date geo-information. Different acquisition times and differences between the mapped land cover and the real land use restrict the application of these data for urban monitoring applications such as the dispersion of pollutants.
The presented work is part of the project Austrian Settlement & Alpine environment cluster for GMES - Cluster Settlement, which had the aim of defining, developing and consolidating an integrated EO based product/service portfolio providing geoinformation in the urban and settlement domain. The analyses were done for a 12 kmē area located in the northern part of the city Linz, Austria. From airborne laser scanning (ALS) data a building block model was extracted using a Dempster-Shafer fusion approach. The derived building block model was used in combination with an IKONOS image to generate an improved urban structure product. For the extraction of the final land use information the derived urban structure product is combined with demographic data. The geo-coded HEROLD company and the ACGeo address data were used to assign the economic activity to each sub-building. Finally, this derived functional classification of sub-buildings was used to disaggregate census-based statistical population data using a dasymetric approach resulting in a population density map on a sub-building level.

Airborne laser scanning; DTM; DSM; demographic data; building block model; urban land cover/use;