Robustness Improvement in Optical Deformation Analysis by Matching a Motion Field to Stress Imposed on a Surface

Jun Takada, Masahiko Ohta

Abstract

A denoizing and compression method for motion field data is proposed to improve the robustness and efficiency of optical deformation analysis. The proposed method estimates stress change over time imposed on a captured surface based on displacements and strains derived from motion fields obtained by optical flow. The method then finds the best least squares approximation of the motion components due to the stress time series from the motion time series at each coordinate. This process decomposes motion fields into stress and response vectors while removing disturbances. Experimental results confirm that the proposed method significantly reduces noise in visualizing crack opening displacements on a bridge beam under traffic loads, as well as the size of the motion field data.

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Paper Citation


in Harvard Style

Takada J. and Ohta M. (2020). Robustness Improvement in Optical Deformation Analysis by Matching a Motion Field to Stress Imposed on a Surface.In Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, ISBN 978-989-758-402-2, pages 767-774. DOI: 10.5220/0008944007670774


in Bibtex Style

@conference{visapp20,
author={Jun Takada and Masahiko Ohta},
title={Robustness Improvement in Optical Deformation Analysis by Matching a Motion Field to Stress Imposed on a Surface},
booktitle={Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP,},
year={2020},
pages={767-774},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008944007670774},
isbn={978-989-758-402-2},
}


in EndNote Style

TY - CONF

JO - Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP,
TI - Robustness Improvement in Optical Deformation Analysis by Matching a Motion Field to Stress Imposed on a Surface
SN - 978-989-758-402-2
AU - Takada J.
AU - Ohta M.
PY - 2020
SP - 767
EP - 774
DO - 10.5220/0008944007670774