We are continuously maintaining the up-to-date city model in Espoo. Our model is the present model of the city. Planners can use it as a platform for planning and interaction.
Our city model conforms to the CityGML definitions. CityGML is an open data model and XML-based format for the storage and transfer of virtual 3D city models. It includes a common definition of the basic entities, attributes, and relations of a 3D city model. In our model there are buildings, city furniture, land use, relief, transportation, vegetation and waterbodies. The buildings are stored with foundations and roofs in our database. They have wall textures and eaves in CityGML format. Land use may consist of real estates, land ownership or planned land use according to a detail plan. As generic classes, which enhance the CityGML definition, we have cables, pipes, heat pipes, wells and fences in our model.
We store and update the city model in a relational database. We have started making a 3D city model in 2015 on the basis of our basic map data. We get data via surveying, stereo mapping, laser scanning and from the ordinary processes of detail planning and building control. The objects in the model have connection to the register of attribute information. Thus CityGML also carries attribute information.
We publish current city model data via Web Feature Service in a CityGML format. We can publish our model in levels of detail 1-3. We have tested CityGML data transfer and interface since the end of year 2017. National Land Survey of Finland and a few firms have also tested our service after that. Planners have shown considerable interest in it.
My proposal for the presentation is
either - Pitch: 3 to 5 minutes
or - Demo: 15 minutes (video demo, not a live demo)
