D.McCarthy et al PR paper - 3rd submission.pdf (899.36 kB)
Monitoring 3D vibrations in structures using high resolution blurred imagery
journal contribution
posted on 2016-06-30, 12:59 authored by David McCarthy, Jim Chandler, Alessandro PalmeriPhotogrammetry has been used in the past to monitor the laboratory testing of civil engineering structures using multiple image based sensors. This has been successful, but detecting vibrations during dynamic structural tests has proved more challenging. Detecting vibrations during dynamic structural tests usually depend on high speed cameras, but these sensors often result in lower image resolutions and reduced accuracy.
To overcome this limitation, a novel approach described in this paper has been devised to take measurements from blurred images in long-exposure photos. The motion of the structure is captured in individual motion-blurred image, without dependence on imaging speed. A bespoke algorithm then determines each measurement point’s motion. Using photogrammetric techniques, a model structure’s motion with respect to different excitation frequencies is captured and its vibration envelope recreated in 3D. The approach is tested and used to identify changes in the model’s vibration response.
History
School
- Architecture, Building and Civil Engineering
Published in
Photogrammetric RecordVolume
31Issue
155Pages
304-324Citation
MCCARTHY, D., CHANDLER, J. and PALMERI, A., 2016. Monitoring 3D vibrations in structures using high resolution blurred imagery. The Photogrammetric Record, 31 (155), pp. 304-324.Publisher
Wiley / © The Remote Sensing and Photogrammetry Society and John Wiley & Sons Ltd.Version
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2016-04-15Publication date
2016-09-18Notes
This is the peer reviewed version of the following article: MCCARTHY, D., CHANDLER, J. and PALMERI, A., 2016. Monitoring 3D vibrations in structures using high resolution blurred imagery. The Photogrammetric Record, 31 (155), pp. 304-324, which has been published in final form at http://dx.doi.org/10.1111/phor.12155. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.ISSN
1477-9730Publisher version
Language
- en