Srtm Data Characterization in Urban Areas
نویسندگان
چکیده
The availability of Shuttle Radar Topography Mission (SRTM) data opens the possibility to characterize urban areas by means of this sensor all over the world. In particular, the global digital elevation model (DEM) can provide a three-dimensional atlas of urban agglomerates. However, the coarse ground resolution and the problems due to radar imaging of the complex urban environments do not allow a precise characterization of urban features. This work is aimed to a first assessment of building detection in urban areas using SRTM DEMs. We considered data over Los Angeles and Salt Lake City, and showed that, despite the above mentioned problems, it is still possible to detect tall structures and identify the major buildings in the area. Due to the coarseness of the data, classical algorithms for building detection and recognition are not immediately useful, but a comparison with a ground survey for the Wilshire Corridor in Los Angeles provides a first evaluation of the usefulness of SRTM data for urban applications.
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