UPDATE
Buildings of a city change with time, new buildings are being built, existing ones are expanded and old buildings are torn down. Therefore the digital city model has to be updated regularly, typically every 2-3 years.
For building modeling we use automatic procedures or photogrammetry, depending on how the original city model was created. As a result of our update, we supply the current building models including the database commands for adding, changing or deleting the affected building units. |
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