# Free multi-floor indoor space extraction from complex 3D building models

> Research article (Earth Science Informatics, 2016) · cited 28× · AI/ML

**Wikidata**: [openalex:W2553928822](https://www.wikidata.org/wiki/openalex:W2553928822)  
**Source**: https://4ort.xyz/entity/free-multi-floor-indoor-space-extraction-from-complex-3d-building-models