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GAP-closing 3D building reconstruction by aligning boundaries of roof segments and detecting uncovered details

: Pohl, Melanie; Bulatov, Dimitri

Fulltext urn:nbn:de:0011-n-3367009 (982 KByte PDF)
MD5 Fingerprint: 21e74cdcf738efaa391119244a52d30d
Created on: 21.4.2015

Stilla, U. ; International Society for Photogrammetry and Remote Sensing -ISPRS-:
PIA 2015, Photogrammetric Image Analysis : HRIGI15 - High Resolution Earth Imaging for Geospatial Information, workshops, 25-27 March 2015, Munich, Germany
Istanbul: ISPRS, 2015 (ISPRS Annals II-3/W4)
Workshop "Photogrammetric Image Analysis" (PIA) <2015, Munich>
Workshop "High Resolution Earth Imaging for Geospatial Information" (HRIGI) <2015, Munich>
Conference Paper, Electronic Publication
Fraunhofer IOSB ()
3D building reconstruction; polygon alignment; cut lines; step lines; boundary of roof faces; uncovered details

We describe a work flow to border building faces which aims to obtain a detailed and closed building model. Initially, we use the estimated roof planes and the rasterized binary mask of the corresponding inlier set to generate bordering polygons. To close the gaps between the initial boundary polygons and between the polygons and the building ground outline, we introduce an algorithm to align boundaries which successfully works in 2.5D and 3D. To enhance the accuracy of the boundary alignment, we use additional reliable model entities such as cut lines and step lines between the initial estimated roof planes. All gaps that cannot be avoided by this procedure are afterwards covered by a method searching for uncovered details.