3D DEFORMATION MEASUREMENT of CONCRETE WALL USING CLOSE-RANGE PHOTOGRAMMETRY

Tee Ann Teo*

*Corresponding author for this work

研究成果: Conference article同行評審

摘要

Due to the development of digital image processing, digital photogrammetry is becoming an interesting research area in the field of structural monitoring in civil engineering. This study presents a photogrammetric measurement technique for concrete wall deformation monitoring in the destructive experiment. The non-contact photogrammetric measurement technique which provides surface deformation, is more flexible than the contacted single-point measurement technique (e.g., linear variable displacement transducers, LVDT). The major steps of the proposed scheme include (1) camera calibration, (2) orientation modeling, (3) 3D dense matching, and (4) filtering and interpolation for surface deformation. This experiment used two non-metric digital cameras to measure the deformation of a concrete wall in destructive experiment. The validation compared the image-derived and ranger-derived displacements during the experiment with mean error and standard errors of 32 epochs were −0.02mm and 0.81mm, respectively. The correlation between image-derived displacement and LVDT-derived displacement was 0.9803. The advantage of photogrammetry is to derive surface deformation which covered the whole wall during the experiment. In summary, this study demonstrated that photogrammetry is a useful measurement technique for concrete wall destructive experiment.

原文English
頁(從 - 到)1175-1179
頁數5
期刊International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
43
發行號B2
DOIs
出版狀態Published - 6 八月 2020
事件2020 24th ISPRS Congress - Technical Commission II - Nice, Virtual, France
持續時間: 31 八月 20202 九月 2020

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