Structural Deflection Measurement with a Range Camera
Publication: Journal of Surveying Engineering
Volume 138, Issue 2
Abstract
Range cameras offer great potential for the measurement of structural deformations because of their ability to directly measure video sequences of three-dimensional coordinates of entire surfaces, their compactness, and their relatively low cost compared with other active imaging technologies such as terrestrial laser scanners. Identified limitations of range cameras for high-precision metrology applications such as deformation measurement include the high (centimeter level) noise level and scene-dependent errors. This paper proposes models and methodologies to overcome these limitations and reports on the use of a SwissRanger SR4000 range camera for the measurement of deflections in concrete beams subjected to flexural load-testing. Results from three separate tests show that submillimeter precision and accuracy—assessed by comparison with estimates derived from terrestrial laser scanner data—can be achieved. The high-accuracy range camera results were realized by eliminating the systematic, scene-dependent bias of internal scattering through measurement differencing and by reducing the influence of random errors with temporal and spatial filtering strategies. Additional experiments to validate some of the fundamental modeling assumptions and to explain the possible causes of residual, submillimeter biases in the deflection estimates are also reported.
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Acknowledgments
Funding for this research was provided by the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Canada Foundation for Innovation (CFI).
References
Barazzetti, L., and Scaioni, M. (2010). “Development and implementation of image-based algorithms for measurement of deformations in material testing.” Sensors, 10(8), 7469–7495.SNSRES
Chiabrando, F., Chiabrando, R., Piatti, D., and Rinaudo, F. (2009). “Sensors for 3D imaging: metric evaluation and calibration of a CCD/CMOS time-of-flight camera.” Sensors, 9(12), 10080–10096.SNSRES
Chiabrando, F., Piatti, D., and Rinaudo, F. (2010). “SR-4000 Tof camera: Further experimental tests and first applications to metric surveys.” Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., 38(5), 149–154.
Fraser, C. S., and Riedel, B. (2000). “Monitoring the thermal deformation of steel beams via vision metrology.” ISPRS J. Photogramm. Remote Sens.IRSEE9, 55(4), 268–276.
Gordon, S. J., and Lichti, D. D. (2007). “Modeling terrestrial laser scanner data for precise structural deformation measurement.” J. Surv. Eng., 133(2), 72–80.JSUED2
Hegger, J., Sherif, A., and Görtz, S. (2004). “Investigation of pre- and postcracking shear behaviour of prestressed concrete beams using innovative measuring techniques.” ACI Struct. J.ASTJEG, 101(2), 183–192.
Jamtsho, S., and Lichti, D. D. (2010). “Modeling scattering distortion of 3D range camera.” Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., 38(5), 299–304.
Kahlmann, T., and Ingensand, H. (2008). “Calibration and development for increased accuracy of 3D range imaging cameras.” J. Appl. Geod., 2(1), 1–11.
Karel, W., Ghuffar, S., and Pfeifer, N. (2010). “Quantifying the distortion of distance observations caused by scattering in time-of-flight range cameras.” Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., 38(5), 316–321.
Lange, R., and Seitz, P. (2001). “Solid-state time-of-flight range camera.” IEEE J. Quantum Electron., 37(3), 390–397.IEJQA7
Lichti, D. D. (2007). “Modelling, calibration and analysis of an AM-CW terrestrial laser scanner.” ISPRS J. Photogramm. Remote Sens.IRSEE9, 61(5), 307–324.
Lichti, D. D., Kim, C., and Jamtsho, S. (2010). “An integrated bundle adjustment approach to range-camera geometric self-calibration.” ISPRS J. Photogramm. Remote Sens.IRSEE9, 65(4), 360–368.
Lichti, D. D., and Kim, C. (2011). “A comparison of three geometric self-calibration methods for range cameras.” Remote Sens.RSEND3, 3(5), 1014–1028.
Lin, S.-Y., Mills, J. P., and Gosling, P. D. (2008). “Videogrammetric monitoring of as-built membrane roof structures.” Photogramm. Rec.PGREAY, 23(122), 128–147.
Lindner, M., Schiller, I., Kolb, A., and Koch, R. (2010). “Time-of-flight sensor calibration for accurate range sensing.” Comput. Vis. Image Und.CVIUF4, 114(12), 1318–1328.
Maas, H.-G., and Hampel, U. (2006). “Photogrammetric techniques in civil engineering material testing and structure monitoring.” Photogram. Eng. Remote Sens.PGMEA9, 72(1), 39–45.
Mesa Imaging. (2009). SR4000 User Manual, Version 0.1.2.2., Mesa Imaging, Zurich, Switzerland.
Mills, J. P., Newton, I., and Peirson, G. C. (2001). “Pavement deformation monitoring in a rolling load facility.” Photogramm. Rec.PGREAY, 17(97), 7–24.
Mure-Dubois, J., and Hugli, H. (2007). “Optimized scattering compensation for time-of-flight camera.” Proc., Two- and Three-Dimensional Methods for Inspection and Metrology V, SPIE, Bellingham, WA, 67620H.
Park, H. S., Lee, H. M., Adeli, H., and Lee, I. (2007). “A new approach for health monitoring of structures-terrestrial laser scanning.” Comput. Aided Civil Infrastr. Eng.CCIEFR, 22(1), 19–30.
PMD Technologies. (2011). 〈http://www.pmdtec.com/〉 (Aug. 23, 2011).
Rönnholm, P., et al. (2009). “Comparison of measurement techniques and static theory applied to concrete beam deformation.” Photogramm. Rec.PGREAY, 24(128), 351–371.
Soudarissanane, S., Lindenbergh, R., Menenti, M., and Teunissen, P. (2011). “Scanning geometry: Influencing factor on the quality of terrestrial laser scanning points.” ISPRS J Photogramm. Remote Sens.IRSEE9, 66(4), 389–399.
Whiteman, T., Lichti, D. D., and Chandler, I. (2002). “Measurement of deflections in concrete beams by close-range digital photogrammetry.” Proc., Joint Int. Symp. on Geospatial Theory, Processing and Applications (CD-ROM), CIG, Ottawa, Canada.
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© 2012. American Society of Civil Engineers.
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Received: Jun 29, 2011
Accepted: Nov 17, 2011
Published online: Nov 19, 2011
Published in print: May 1, 2012
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