Abstract

A novel technique for measuring the displacements of large-span truss string structures that employs multicamera systems is proposed. The coordinates of the stereo-vision systems are unified in a single global coordinate system by employing 3D data reconstructed using close-range photogrammetry. To estimate the camera’s attitude motions during an experiment, an instantaneous extrinsic rectification algorithm was developed. Experiments in which a camera was rotated and translated were conducted to verify the accuracy and precision of the developed algorithm. In addition, the proposed multicamera systems were employed to analyze a large-span truss string structure. The displacement results obtained from numerical simulations and experiments using pre-calibration and rectification methods are compared in this paper, and the stability of the camera’s extrinsic parameters is discussed.

© 2016 Optical Society of America

Extrinsic calibration of a non-overlapping camera network based on close-range photogrammetry

Shuai Dong, Xinxing Shao, Xin Kang, Fujun Yang, and Xiaoyuan He
Appl. Opt. 55(23) 6363-6370 (2016)

High-precision and flexible calibration method of non-overlapping array cameras

Cong Liu, Xiaoyuan He, Xiaopeng Liu, and Zhihong Xu
Appl. Opt. 58(33) 9251-9258 (2019)

Method for large-range structured light system calibration

Yatong An, Tyler Bell, Beiwen Li, Jing Xu, and Song Zhang
Appl. Opt. 55(33) 9563-9572 (2016)

Global vision measurements of object position and orientation with non-coplanar feature points determined by point optimization in camera coordinate system

Guan Xu, Anqi Zheng, Xiaotao Li, and Jian Su
Appl. Opt. 56(1) 105-114 (2017)

Experimental and simulation investigation of stereo-DIC via a deep learning algorithm based on initial speckle positioning technology

Minglu Dai, Kang Wei, Ben Gao, Bin Zhou, and Xinxing Shao
Appl. Opt. 63(8) 1895-1907 (2024)