International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B3. Istanbul 2004
A further disadvantage is the restriction to buildings with only
two orthogonal main directions. This may be overcome by the
projection of the point clouds in smaller angle increments than
90°. Besides this, a number of further extensions can be
envisaged to improve the applicability of the method:
In addition to the search for lines, circles or other linear
elements might be searched for in the projections. In this way
possibly curved roof members could be reconstructed.
In order to be able to evaluate more complex buildings it should
be considered to split buildings into smaller primitives, as
suggested by [Brenner 1998]. The method might also be
combined with further segmentation steps, by which points are
selected that belong to surfaces of same orientation. This sub-
segmentation could be used to accomplish a projection only
with the associated points, allowing the detection of lines in
single projections. Beside these improvement steps, the method
offers itself for a combination with other building
reconstruction techniques.
6 ACKNOWLEGMENTS
This work was partly funded by the Swiss Federal Office of
Topography. We thank the Swiss Federal Office of
Topography for providing the laserscanner data set. The data
set of Freiberg was kindly provided by Milan Flug GmbH and
the data set of Dresden by the Dam Authority of Saxony (LTV
Sachsen). The author thanks Alexandra D. Hofmann for her
supervision of the presented work.
7 REFERENCES
Brenner, C., Haala, N., 1998 “Rapid acquisition of virtual
reality city models from multiple data sources” IAPRS
International Archives of Photogrammetry and Remote Sensing
Vol. 32, Part 5, pp. 323-330
Gorte, B. 2002 “Segmentation of TIN-structured surface
models” Symposium on Geospatial Theory, Processing and
Applications; Working Group IV/6; Ottawa, Canada; July
8-12
Maas, H.-G., 1999 “Closed solution for the determination of
parametric building models from invariant moments of airborne
laserscanner data” IAPRS International Archives of
Photogrammetry and Remote Sensing Vol. 32, Part 3-2W5, pp.
193-199
Rottensteiner, F., Briese, C. 2002 “A new method for building
extraction in urban areas from high-resolution LIDAR data”
IAPRS International Archives of Photogrammetry and Remote
Sensing and Spatial Information Sciences, Vol.34, Part 3A,
pp.295-301
Vosselman, G., 1999 “Building Reconstruction using Planar
Faces in Very High Density Data” IAPRS International
Archives of Photogrammetry and Remote Sensing, Vol. 32, Part
3-2W5, pp. 87-92.
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