18010 Rate this article: 4.0 Esri.com – September 2011 – Using Automatic 3D Building Extraction to Enhance Your GIS Esri.com – September 2011 – Using Automatic 3D Building Extraction to Enhance Your GIS Beau Legeer of Exelis introduces the technology concept of 3D building extraction from LiDAR data. Please login or register to post comments. Imaging Notes – Summer 2011 – Observing a Volatile Earth GPS World Magazine – October 2011 – Exelis Introduces Software for Extracting Features from LiDAR Data