
Proceedings Paper
Use of 3D range cameras for structural deformation measurementFormat | Member Price | Non-Member Price |
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Paper Abstract
A three-dimensional range camera is a state-of-the-art imaging technology that has strong potential for various closerange
high-precision measurement applications. One such application is the measurement of structural deformation
under external loading conditions. Deformation tests have been conducted on two concrete beams with and without
steel-reinforced polymer sheets in an indoor testing facility using an SR4000 range camera. The achieved measurement
precision and accuracy were both within 1 mm when compared with a terrestrial laser scanner. Further testing on the
concrete beam with the steel-reinforced polymer sheets has shown that a deformation as small as 3 mm can be reliably
detected with a range camera with a measurement precision of 0.3 mm and an accuracy of 0.4 mm. These results clearly
indicate the high metric potential of 3D range cameras in spite of their coarse imaging resolution and low (centimeterlevel)
single point accuracy. The high accuracy can be achieved thanks to the differencing scheme used to derive the
deflection estimates from two sets of range camera measurements, one at no-load and one of the beam in a loaded state,
which eliminates the scene-dependent range biases such as scattering and multi-path errors.
Paper Details
Date Published: 21 June 2011
PDF: 8 pages
Proc. SPIE 8085, Videometrics, Range Imaging, and Applications XI, 80850K (21 June 2011); doi: 10.1117/12.889191
Published in SPIE Proceedings Vol. 8085:
Videometrics, Range Imaging, and Applications XI
Fabio Remondino; Mark R. Shortis, Editor(s)
PDF: 8 pages
Proc. SPIE 8085, Videometrics, Range Imaging, and Applications XI, 80850K (21 June 2011); doi: 10.1117/12.889191
Show Author Affiliations
Sonam Jamtsho, Univ. of Calgary (Canada)
Derek D. Lichti, Univ. of Calgary (Canada)
Published in SPIE Proceedings Vol. 8085:
Videometrics, Range Imaging, and Applications XI
Fabio Remondino; Mark R. Shortis, Editor(s)
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