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SQU research scientist wins global award
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Tue Mar 13 2012 07:11:54 GMT+0400 (Arabian Standard
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Muscat: For his research work in 3D
visualisation of buildings from airborne Light
Detection and Ranging (LIDAR) data, Dr. B.
Babu Madhavan, a research scientist at the
Remote Sensing & GIS Centre of Sultan Qaboos
University,
has
won
Geospatial
World
Innovation Award 2012.
The award will be presented to Dr Madhavan
during the Geospatial World Forum 2012 to be
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The research work which earned Dr Madhavan
this prestigious award was titled 'A computer
vision based approach for 3D building
modelling of airborne laser scanner DSM data'.
SQU research scientist wins global award
The project was researched from 2000 to 2002
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while he was working in Japan. It was initiated
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at
Softopia
Japan
(http://www.softopia.or.jp/en/) a government
IT organisation. The Softopia Japan Area is
made up of venture business as well as large
scale businesses that lead IT industry.
Subsequently, his previous employer PASCO
Corporation-Japan supported Dr. Madhavan's
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further the research till 2010.
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The research involved development of a
computer vision based method for 3D building
modelling by using stable planar regions
extracted from low-spatial-resolution airborne
laser scanner (ALS) data.
It
suggested
less
operator
interaction
(interactive processing) and an algorithm that
automatically generates building parameters
from digital surface models (DSM). The stable
planar region extraction approach proposed for
general range data was applied to low-spatialresolution ALS data that were resampled by a
non-linear re-sampling method for spatial
resolution enhancement.
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After stable planar region extraction, the roof edges formed by adjoining planes were computed by
using the topologic relations and geometries of the extracted planar regions. Finally, a polyhedral
description of the data was derived using the geometries of the stable planar regions, line segments
of jump and/or boundary edges, and roof edges.
According to Dr. Madhavan, this method was robust against noise in the DSM data. “By using this
method, development of 3D building models directly from high-resolution satellite images and
aerial images in association with LIDAR data can be achieved. Three dimension models of a city
have variety of applications such as infrastructure development, disaster management and helpful
for several environmental simulation studies”, he said.
Dr. Babu Madhavan acknowledged the guidance and support of Prof. Kazuhiko Yamamoto, Dept. of
Information Science, Gifu University, Mr. Y. Niwa Project Director, Softopia Japan and Dr. Sasakawa,
Director-PASCO, in carrying out this project. “I also would like to thank my co-researchers, Dr.
Caihua Wang, Fujifilm-Japan and Dr. Tanahashi, Gifu IT department for their support”, he said. The
research came out with an international paper and one patent for that as well. vulputate.
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3/18/2012 11:07 AM