Reduce Noise of Laser Scanning Data

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00220047" target="_blank" >RIV/68407700:21110/14:00220047 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Reduce Noise of Laser Scanning Data
Original language description
The data obtained by 3D scanners with required higher accuracy and density contain disturbing noise, this noise makes the data processing, mainly by means of triangulated irregular networks using automated procedures, more complicated. The paper presentsa new methods of noise reduction based on natural redundancy of continuous objects and surfaces where, however, some deformation of the object shape occurs. The second method is based on wavelet transform. The first method involves a gradual choice of aselected number of the nearest points for each point of a scan, a selected surface is fitted with them and by the elongation or shortening of a beam with a given horizontal direction and the zenith angle onto the intersection with the surface a new (smoothed) position of the points is obtained. As the surface for fitting are used plane, polynomials of 2nd, 3rd and 4th degree. For the better calculation stability Chebyshev bivariant orthogonal polynomials are used. These surfaces are com
Czech name
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Czech description
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
14th International Multidisciplinary Scientific Geoconference SGEM 2014, Conference Proceedings vol. III
ISBN
978-619-7105-12-4
ISSN
1314-2704
e-ISSN
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Number of pages
8
Pages from-to
275-282
Publisher name
STEF92 Technology Ltd.
Place of publication
Sofia
Event location
Albena
Event date
Jun 17, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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