Threat substances explosion and polluted building surfaces detection research in 3D virtual city based on ArcGIS

With cities´ sharp development, urban safety, disaster prevention, all kinds of emergency plans and post-measures have been taken great attention. This paper totally based on ArcGIS, focuses on the analysis of polluted building surfaces after threat substances exploded around urban area. The structure is as follows. To begin with, the real 3D virtual city area is rapidly created based on ArcGIS. Next, at explosion site, realistic explosion point and threat area are simulated in view. And then, by computing and marking the intersection between buildings and the threat area indeed and clearly, we can detect out the polluted building surfaces.