Journal
INTERNATIONAL JOURNAL OF IMAGE AND DATA FUSION
Volume 2, Issue 2, Pages 121-147Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19479832.2010.543934
Keywords
DSM; very high resolution optical satellite imagery; urban structure; laserscanning; object-based
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Funding
- German Federal Office of Civil Protection and Disaster Assistance [AZ BBK F2-440-00-280]
- German Federal Ministry of Education and Research (BMBF) [01UW0706]
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At present, the majority of the world's population is living in urban areas. Cities undergo constant development in their morphology. The latter is always a turned-into-stone representation of the coetaneous social, economical and technical values. The technical developments in recent years of very high-resolution spaceborne earth observation methods enable mapping of large urban areas with a decent level of detail. Additionally, detailed elevation information of urban areas in developed countries is widely available. Digital surface models (DSMs) support the classification of urban structures beyond two-dimensional classifications. We present a hierarchical, object-based and transferable framework to extract the urban structure on a high level of geometric detail for two test sites in Germany. The results show accuracies of above 90% for the land-use/land-cover classification for both test sites applying the same routines. DSMs from various sources have been utilised for the extraction of the individual building structures with accuracies of 90% and 80%, respectively. The methodology is suited to extract the urban structure on the level of individual buildings and the results can be utilised as 3D city model for the purpose of decision-making, urban planning and further analyses.
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