The 3D city models are used by municipalities throughout Europe but often have
a limited use in decision making and a short lifespan when they are not kept
updated. The Danish municipality of Odense devised a method for dynamically
updating the models so they can be used in current and future workflows. The
process retrieves existing GIS data, which is maintained, then generates 3D
objects on the fly. These objects automatically update when changes are made
in the data register or base map.
This innovative method also makes it easy for municipal employees who are not
experienced in 3D modeling and need to quickly generate a city model or object.
Depending on the setup and requirements, many different variations of the 3D
maps can be generated on the fly. If a municipality does not yet have a 3D city
model, this method could be used to develop one quickly using existing spatial
data. When 3D city model already exists, this process can be used to refine it by
adding assets and furniture.
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Using GenerativeComponents, any object with a geographical representation
can be generated, such as buildings, roads, and furniture like benches and lamp
posts. The 3D objects inherit the attribute links or semantic data so they can
be used for GIS inquiries and analysis. This quickly produces a 3D city model for
large areas that is analyzed for decision-making purposes.