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Remote Sensing for Development of Digital City Model

To evaluate various risks in an urban area, building inventory is necessary. However,a large amount of time and effort is required to develop building inventory by field surveys. Thus application of new remote sensing technologies, e.g., high-resolution satellites, airborne laser scanner, airborne SAR, is being thought. Three-dimensional urban modeling is being conducted for mega cities in Asia: Metro Manila, Bangkok, Tokyo etc. The constructed digital city model can be used for assessment of urban vulnerability from various hazards, e.g., earthquakes and floods.