Abstract

For the active control of large-scale structures, especially high-rise buildings and bridges, fast and accurate measurement of local deformations is required. We present a highly accurate and fast vision-based measurement technique and, to the best of our knowledge, first experimental results for the control of an adaptive-structures prototype frame, equipped with hydraulic actuators. Deformations are detected at multiple discrete points, based on a photogrammetric approach with additional holographic spot replication. The replication leads to effective averaging of most error contributions, especially discretization and photon noise. Measurements over a distance of 11.4 m result in a measurement uncertainty of 0.0077 pixel (corresponding to 0.055 mm in object space).

© 2020 Optical Society of America

High precision deformation measurement by digital phase shifting holographic interferometry

Ming Chang, Ching-Piao Hu, Philip Lam, and James C. Wyant
Appl. Opt. 24(22) 3780-3783 (1985)

Accuracy improvement of time-of-flight depth measurement by combination of a high-resolution color camera

Pengfei Yu, Shourui Yang, and Shengyong Chen
Appl. Opt. 59(35) 11104-11111 (2020)

High-speed 3D digital image correlation for rolling deformation of a tire sidewall and measuring dynamic contact patch length

Xueliang Gao, Ye Zhuang, Shu Liu, Weiguang Fan, Chengwei Zhu, and Qiang Chen
Appl. Opt. 59(5) 1313-1322 (2020)

Geometry constrained correlation adjustment for stereo reconstruction in 3D optical deformation measurements

Zhilong Su, Lei Lu, Fujun Yang, Xiaoyuan He, and Dongsheng Zhang
Opt. Express 28(8) 12219-12232 (2020)

High-speed measurement of mechanical micro-deformations with an extended phase range using dual-wavelength digital holographic interferometry

Natalia Munera, Carlos Trujillo, and Jorge Garcia-Sucerquia
Appl. Opt. 61(5) B279-B286 (2022)