Portal of the Spatial Information System of the City of Poznań – 3D city model
About this good practice
GEOPOZ uses the FME Platform to build a 3D model of the city, a database of urban greenery, as well as other state-of-the-art solutions for providing information on Poznan's urban space.
In 2018, GEOPOZ began work on creating a 3D model of Poznan and sought a solution to help with this task and it is still actualized. The work included:
- integrating data from various sources, including Oracle and PostgreSQL database systems,
- cyclic processing of large volumes of data,
- transformation of data to generate building blocks in a 3D model,
- saving the results in GML format, in accordance with the standard for representation, storage and exchange of 3D virtual city and terrain models CityGML, in LoD1 (LOD - level of detail) and LoD2 quality,
- creation of data processing schedules.
Original 2D map was converted into 3D models with different active layers (eg. solar potential of the roof) which is modernized step-by-step into the direction of digital-twin. One of the last upgrades is evidence of city’s green spaces, including location and data about over 45000 trees. The functionality includes IoT, what allows to present actual state of e.g. environment and weather. Mentioned functions can be used to support sustainable urban mobility.
Expert opinion
Resources needed
It required the integration of multiple tools with the support of an external consultancy and implementation company.
Evidence of success
The scale of interest is evidenced by the 25 thousand downloads of a total of 3.4 million buildings alone, indicating considerable interest and success in the implementation of the continuously developed funcionality.
The 3D model of the City of Poznań: (i) has received the ‘Wings of IT in Administration’ award, (ii) was ranked 4th in the world in 3d model benchmarking study Assessing and benchmarking 3D city models Urban Analytics Lab Singapore.
Potential for learning or transfer
The publication of data, which is stored in archived databases for the general public, in both raw and graphically processed form, is an interesting idea at city, village and town scales. The collection from different sources, structuring and aggregation of data widens the potential audience from survey providers to citizens seeking information.
The transfer of the entire solution seems difficult in the short term, but support for the phased implementation of functionality and the selection of the most frequently used operations, as well as the way in which data is collected and aggregated, makes perfect sense. Support in terms of the software used can facilitate the implementation process.
While the transferability of such a solution is supposed to be simple, it involves complex ways of obtaining data and presenting it in a form that is attractive to the widest possible audience. The experience of Poznan can be used to minimise the complexity of the future solution.
Good practice owner
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