Spatial survey of Urban Environments

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GEOmedia English Special Issue 3-2015 by Luigi Colombo and Barbara Marana

The paper deals some experimental benchmarks regarding urban environment modelling. The employed techniques, which automatically collected point clouds and created the DSM, are terrestrial laser scanning, with a direct GNSSRTK geo-referencing, and UAS imagery.

The technological innovation in survey techniques has nowadays led to the development of automated systems, with combined multi-functional sensors including laser scanning, GNSS receivers and imaging. These devices can perform on field metric operations, ranging from spatial modelling, geo-referencing of objects in an assigned coordinate system, fast spatial reconstructions of interiors or exteriors and roofs, with the related thematic information (colour, materials, decay).