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Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines

We propose a new flexible technique for accurate vision-based seismic displacement measurement of building structures via a single non-stationary camera with any perspective view. No a priori information about the camera’s parameters or only partial knowledge of the internal camera parameters is req...

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Detalles Bibliográficos
Autores principales: Guo, Jia, Xiang, Yang, Fujita, Kohei, Takewaki, Izuru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7601557/
https://www.ncbi.nlm.nih.gov/pubmed/33053806
http://dx.doi.org/10.3390/s20205775
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author Guo, Jia
Xiang, Yang
Fujita, Kohei
Takewaki, Izuru
author_facet Guo, Jia
Xiang, Yang
Fujita, Kohei
Takewaki, Izuru
author_sort Guo, Jia
collection PubMed
description We propose a new flexible technique for accurate vision-based seismic displacement measurement of building structures via a single non-stationary camera with any perspective view. No a priori information about the camera’s parameters or only partial knowledge of the internal camera parameters is required, and geometric constraints in the world coordinate system are employed for projective rectification in this research. Whereas most projective rectifications are conducted by specifying the positions of four or more fixed reference points, our method adopts a stratified approach to partially determine the projective transformation from line-based geometric relationships on the world plane. Since line features are natural and plentiful in a man-made architectural building environment, robust estimation techniques for automatic projective/affine distortion removal can be applied in a more practical way. Both simulations and real-recorded data were used to verify the effectiveness and robustness of the proposed method. We hope that the proposed method could advance the consumer-grade camera system for vision-based structural measurement one more step, from laboratory environments to real-world structural health monitoring systems.
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spelling pubmed-76015572020-11-01 Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines Guo, Jia Xiang, Yang Fujita, Kohei Takewaki, Izuru Sensors (Basel) Article We propose a new flexible technique for accurate vision-based seismic displacement measurement of building structures via a single non-stationary camera with any perspective view. No a priori information about the camera’s parameters or only partial knowledge of the internal camera parameters is required, and geometric constraints in the world coordinate system are employed for projective rectification in this research. Whereas most projective rectifications are conducted by specifying the positions of four or more fixed reference points, our method adopts a stratified approach to partially determine the projective transformation from line-based geometric relationships on the world plane. Since line features are natural and plentiful in a man-made architectural building environment, robust estimation techniques for automatic projective/affine distortion removal can be applied in a more practical way. Both simulations and real-recorded data were used to verify the effectiveness and robustness of the proposed method. We hope that the proposed method could advance the consumer-grade camera system for vision-based structural measurement one more step, from laboratory environments to real-world structural health monitoring systems. MDPI 2020-10-12 /pmc/articles/PMC7601557/ /pubmed/33053806 http://dx.doi.org/10.3390/s20205775 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Guo, Jia
Xiang, Yang
Fujita, Kohei
Takewaki, Izuru
Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines
title Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines
title_full Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines
title_fullStr Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines
title_full_unstemmed Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines
title_short Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines
title_sort vision-based building seismic displacement measurement by stratification of projective rectification using lines
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7601557/
https://www.ncbi.nlm.nih.gov/pubmed/33053806
http://dx.doi.org/10.3390/s20205775
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