Bridge deflection measurement by drone aerial photography using the sampling moiré method

Shien Ri; Jiaxing Ye; Peng Xia; Nobuyuki Toyama; Norihiko Ogura; Tomoki Shiotani

doi:10.1117/12.3023340

15 February 2024 Bridge deflection measurement by drone aerial photography using the sampling moiré method

Shien Ri, Jiaxing Ye, Peng Xia, Nobuyuki Toyama, Norihiko Ogura, Tomoki Shiotani

Proceedings Volume 13069, International Conference on Optical and Photonic Engineering (icOPEN 2023); 130690O (2024) https://doi.org/10.1117/12.3023340
Event: International Conference on Optical and Photonic Engineering (icOPEN 2023), 2023, Singapore, Singapore

Abstract

Accurate deflection measurement is vital in evaluating the structural integrity of transportation infrastructures, with bridges being fascinating. In this study, we propose a novel image stabilization technique integrated into the sampling moiré method, which leads to a dependable approach for measuring bridge deflection through drone aerial photography. Our experimental verification entailed conducting drone tests on an actual bridge, utilizing a passing test vehicle, and the results showcased deflection measurements comparable to those obtained through conventional methods. This newly developed technology eliminates the need for ground-fixed cameras mounted on tripods, thus enabling precise deflection measurement at the millimeter level for bridges in challenging environments, including marine and mountainous areas.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Shien Ri, Jiaxing Ye, Peng Xia, Nobuyuki Toyama, Norihiko Ogura, and Tomoki Shiotani "Bridge deflection measurement by drone aerial photography using the sampling moiré method", Proc. SPIE 13069, International Conference on Optical and Photonic Engineering (icOPEN 2023), 130690O (15 February 2024); https://doi.org/10.1117/12.3023340

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