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While analysing remotely sensed images of urban areas, in many cases an at least approximate knowledge of block partition is useful for specialising operations over areas within which a certain degree of homogeneity can be assumed. Unfortunately, though, this information is not always accessible in a reasonable time or with a reasonable effort, or even in some cases a GIS of the city is not available...
In this paper we analyse a series of pre-and post-event images for the 2004 Tsunami in south-western Sri Lanka coast. The analysis is aimed at locating and extracting buildings in high-resolution optical satellite images acquired before and after the event, in order to compare results and find which buildings have collapsed or otherwise been seriously damaged. The detection and extraction of buildings...
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