Vivek Verma Rakesh Kumar Stephen C. Hsu 3D Building Detection and Modeling from Aerial LIDAR Data. 2213-2220 2006 conf/cvpr/2006 CVPR (2) http://doi.ieeecomputersociety.org/10.1109/CVPR.2006.12 db/conf/cvpr/cvpr2006-2.html#VermaKH06