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N. Pfeifer, M. Rutzinger, F. Rottensteiner, W. Mücke, M. Hollaus:
"Extraction of building footprints from airborne laser scanning: Comparison and validation techniques";
Talk: Joint IEEE-GRSS/ISPRS Workshop on Remote Sensing and Data Fusion over Urban Areas, Urban 2007, Paris, France (invited); 2007-04-11 - 2007-04-13; in: "Proceedings", IEEE, (2007), 9 pages.

Many applications in urban planning and analysis
require the position and extent of buildings, the so-called building
footprint. Cadastral maps acquired by ground based surveying
are often not up-to-date or may not be available at all. Airborne
laser scanning, on the other hand, offers the possibility to detect
the roof outlines in an automated manner. This subject has
been researched in the previous years, but a final comparison
of the quality of these algorithms has not been performed.
Additionally, the methods for assessing the quality of building
footprint extraction should consider the special characteristics
of airborne laser scanning data. This paper gives an overview
of the algorithms developed for the task of house detection
from airborne laser scanning and evaluates two algorithms
experimentally. The methods of quality assessment are discussed
and next to the standard method of pixel based comparison the
object based comparison is studied, providing more insight.
Copyright © 2001 by the Institute of Electrical and Electronics Engineers, Inc.