# Automatic Workflow for Roof Extraction and Generation of 3D CityGML Models from Low-Cost UAV Image-Derived Point Clouds

> Research article (ISPRS International Journal of Geo-Information, 2020) · cited 24× · AI/ML

**Wikidata**: [openalex:W3112678313](https://www.wikidata.org/wiki/openalex:W3112678313)  
**Source**: https://4ort.xyz/entity/automatic-workflow-for-roof-extraction-and-generation-of-3d-citygml-models-from-low-cost-uav-image-derived-point-clouds