eprintid: 36990
rev_number: 11
eprint_status: archive
userid: 5878
dir: disk0/00/03/69/90
datestamp: 2025-07-28 11:45:32
lastmod: 2025-07-28 11:45:58
status_changed: 2025-07-28 11:45:32
type: bookPart
metadata_visibility: show
creators_name: Höfle, Bernhard
creators_name: Mücke, Werner
creators_name: Dutter, M.
creators_name: Rutzinger, Martin
creators_name: Dorninger, P.
title: Detection of building regions using airborne LiDAR : a new combination of raster and point cloud based GIS methods
subjects: ddc-550
divisions: i-120700
abstract: In this paper, a new GIS workflow for fully automated building detection from airborne LiDAR data is introduced. The strengths of both raster and point cloud based methods are combined, in order to derive reliable building candidate regions serving as input for 3D building outline extraction and modeling algorithms. Input data are a normalized Digital Surface Model (nDSM) and a slope-adaptive echo ratio raster, which is a significant parameter for solid objects with low surface roughness, such as buildings. In contrast, high vegetation exhibits a local vertical distribution of laser echoes leading to a low echo ratio value. Potential building areas are detected in the raster domain using standard tools provided by GRASS GIS. Seed regions are identified by using a threshold on (i) object height >2.0 m and (ii) echo ratio >75%. The following growing of the seed regions provides that building walls, overhanging roof parts, and areas obstructed by high vegetation are included. Finally, non-building regions are removed by an object-based classification using a threshold on average laser point surface roughness. The presented candidate region detection achieves high completeness (>97%) with already moderate correctness (>70%). By applying an existing 3D building outline extraction and modeling algorithm, the applicability of the derived candidate building regions is demonstrated.
date: 2009
publisher: Wichmann
id_scheme: DOI
id_number: 10.11588/heidok.00036990
own_urn: urn:nbn:de:bsz:16-heidok-369900
language: eng
bibsort: HOFLEBERNHDETECTIONO2009
full_text_status: public
place_of_pub: Heidelberg
pagerange: 66-75
isbn: 9783879074815
book_title: Geospatial Crossroads GI_Forum '09 : proceedings of the Geoinformatics Forum Salzburg ; [GI_Forum '09 - adVenture GIScience ; symposium from July 07 - 10, 2009]
editors_name: Car, Adriana
citation:   Höfle, Bernhard ; Mücke, Werner ; Dutter, M. ; Rutzinger, Martin ; Dorninger, P.  (2009) Detection of building regions using airborne LiDAR : a new combination of raster and point cloud based GIS methods.  [Book Section]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/36990/1/hoefle_et_al_gi-forum_final_revision_2009.pdf