Development of a Urban Planning Support System for Disaster Prevention Utilizing 3D Urban Model

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Hazard maps play an important role in letting residents know where are the dangerous areas of their city or where to evacuate when hit by the great earthquake. However it is difficult for residents to imagine possible dangerous situation caused by the earthquake only by looking at a hazard map, since a hazard map shows seismic intensity of the meshes into which the map is divided. We develop "GIS and CG integrated system for Automatic Generation of 3D Urban Models" and aim at developing "3D hazard map for collapse simulation" using 3D building models automatically generated. The system automatically generates 3-D building models based on present digital maps or alternative plans proposed by urban planners or designers, and it can be the disaster prevention support system which can visualize collapsed buildings and blockaded road.