Ghent University Academic Bibliography

Advanced

Laser scanning for precise ovalization measurements : standard deviations and smoothing levels

Timothy Nuttens, Cornelis Stal UGent, Hans De Backer UGent, Greet Deruyter UGent, Ken Schotte UGent, Philippe Van Bogaert UGent and Alain De Wulf UGent (2016) JOURNAL OF SURVEYING ENGINEERING. 142(4).
abstract
Monitoring of measurements needs to be supported by a thorough knowledge of the achievable accuracy of the measurement equipment and the processing methodology. This study on ovalization monitoring with laser scanning in tunnels under construction focused on fast-performing laser scanners and their achievable accuracy. This research also investigated the optimum smoothing level of the laser scanning data to achieve the best estimates of ovalization. The experimentally based standard deviations indicate that the used phase-based laser scanner delivers highly accurate results with standard deviations between 0.34 and 0.58 mm, depending on the applied smoothing level. In this research, this laser scanner was used, together with a [x - 0.008 rad; x+0.008 rad] smoothing interval on the calculated radius values to meet the accuracy requirement requested by the client (0.5 mm), even when using multiple setups. Another used type of laser scanner (pulse-based) also delivers standard deviations around this range, but this instrument has a lower scanning speed and a smaller vertical field of view, making it less adapted for measurements in time-restricted tunnel-monitoring projects. (C) 2016 American Society of Civil Engineers.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
LIDAR POINT CLOUDS, TUNNEL, BRIDGE, INSPECTION, PROFILE, Deformation, Tunnels, Measuring instruments, Monitoring, Cross sections, Geomatic surveys, Remote sensing
journal title
JOURNAL OF SURVEYING ENGINEERING
J. Surv. Eng.-ASCE
volume
142
issue
4
article number
UNSP 05016001
pages
9 pages
publisher
Asce-amer Soc Civil Engineers
place of publication
Reston
Web of Science type
Article
Web of Science id
000386369900001
JCR category
ENGINEERING, CIVIL
JCR impact factor
1.667 (2016)
JCR rank
46/125 (2016)
JCR quartile
2 (2016)
ISSN
0733-9453
1943-5428
DOI
10.1061/(ASCE)SU.1943-5428.0000165
language
English
UGent publication?
yes
classification
A1
id
8501897
handle
http://hdl.handle.net/1854/LU-8501897
date created
2017-01-13 09:48:02
date last changed
2017-01-18 10:29:02
@article{8501897,
  abstract     = {Monitoring of measurements needs to be supported by a thorough knowledge of the achievable accuracy of the measurement equipment and the processing methodology. This study on ovalization monitoring with laser scanning in tunnels under construction focused on fast-performing laser scanners and their achievable accuracy. This research also investigated the optimum smoothing level of the laser scanning data to achieve the best estimates of ovalization. The experimentally based standard deviations indicate that the used phase-based laser scanner delivers highly accurate results with standard deviations between 0.34 and 0.58 mm, depending on the applied smoothing level. In this research, this laser scanner was used, together with a [x - 0.008 rad; x+0.008 rad] smoothing interval on the calculated radius values to meet the accuracy requirement requested by the client (0.5 mm), even when using multiple setups. Another used type of laser scanner (pulse-based) also delivers standard deviations around this range, but this instrument has a lower scanning speed and a smaller vertical field of view, making it less adapted for measurements in time-restricted tunnel-monitoring projects. (C) 2016 American Society of Civil Engineers.},
  articleno    = {UNSP 05016001},
  author       = {Nuttens, Timothy and Stal, Cornelis and De Backer, Hans and Deruyter, Greet and Schotte, Ken and Van Bogaert, Philippe and De Wulf, Alain},
  issn         = {0733-9453},
  journal      = {JOURNAL OF SURVEYING ENGINEERING},
  keyword      = {LIDAR POINT CLOUDS,TUNNEL,BRIDGE,INSPECTION,PROFILE,Deformation,Tunnels,Measuring instruments,Monitoring,Cross sections,Geomatic surveys,Remote sensing},
  language     = {eng},
  number       = {4},
  pages        = {9},
  publisher    = {Asce-amer Soc Civil Engineers},
  title        = {Laser scanning for precise ovalization measurements : standard deviations and smoothing levels},
  url          = {http://dx.doi.org/10.1061/(ASCE)SU.1943-5428.0000165},
  volume       = {142},
  year         = {2016},
}

Chicago
Nuttens, Timothy, Cornelis Stal, Hans De Backer, Greet Deruyter, Ken Schotte, Philippe Van Bogaert, and Alain De Wulf. 2016. “Laser Scanning for Precise Ovalization Measurements : Standard Deviations and Smoothing Levels.” Journal of Surveying Engineering 142 (4).
APA
Nuttens, T., Stal, C., De Backer, H., Deruyter, G., Schotte, K., Van Bogaert, P., & De Wulf, A. (2016). Laser scanning for precise ovalization measurements : standard deviations and smoothing levels. JOURNAL OF SURVEYING ENGINEERING, 142(4).
Vancouver
1.
Nuttens T, Stal C, De Backer H, Deruyter G, Schotte K, Van Bogaert P, et al. Laser scanning for precise ovalization measurements : standard deviations and smoothing levels. JOURNAL OF SURVEYING ENGINEERING. Reston: Asce-amer Soc Civil Engineers; 2016;142(4).
MLA
Nuttens, Timothy, Cornelis Stal, Hans De Backer, et al. “Laser Scanning for Precise Ovalization Measurements : Standard Deviations and Smoothing Levels.” JOURNAL OF SURVEYING ENGINEERING 142.4 (2016): n. pag. Print.