In the US, less than 20% of OpenStreetMap (OSM) buildings have a height tag (less than 10% globally). Providing buildings with height tags helps several use cases including 3D map visualization. The Overture Maps Foundation has begun using open lidar data provided by the USGS’s 3DEP program to estimate building heights and provide them back to the community under an open data license. This talk will cover the challenges, algorithms, QA process, and accuracy metrics involved in the project. We will also discuss potential further applications of USGS aerial lidar to create rich, open 3D maps. Over the course of 2023, we plan to process millions of square kilometers lidar to provide building height estimates for the majority of US buildings.
No recording is available from this session.