FOSS4G 2019: Working with 3D city models in Python.
Sep 5, 2019

We presented at the FOSS4G 2019 conference in Bucharest:

Working with 3D city models in Python

Semantic 3D city models are one of the cornerstones of the so-called “smart city” applications, yet they are very difficult to manipulate/edit/update. While they are relatively easy to generate, their use and maintenance is limited by the available software and the cumbersome data model. Have you ever tried to write a CityGML file? And to parse one? We did, and we didn’t like it. Therefore we created a developer-friendly JSON implementation of the CityGML data model. The talk at FOSS4G introduced CityJSON its processing software cjio, which can be used as a CLI to chain operations, or its API can be used to generate features for machine learning.

The complete material of the presentation is in a GitHub repository. The jupyter notebook contains a step-by-step tutorial on using the current version of cjio.

The recording of the talk:

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