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

Jun Takada; Masahiko Ohta

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Paper

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

Topics: Image Enhancement and Restoration; Optical Flow and Motion Analyses

In Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, 767-774, 2020 , Valletta, Malta

Authors: Jun Takada and Masahiko Ohta

Affiliation: NEC Corporation, 1753, Shimonumabe, Nakahara-ku, Kawasaki-shi, Kanagawa 211-8666, Japan

Keyword(s): Motion Field, Deformation Analysis, Non-destructive Testing, Crack Opening Displacement.

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 several formats:

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 (VISIGRAPP 2020) - Volume 4: VISAPP; ISBN 978-989-758-402-2; ISSN 2184-4321, SciTePress, pages 767-774. DOI: 10.5220/0008944007670774

@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 (VISIGRAPP 2020) - Volume 4: VISAPP},
year={2020},
pages={767-774},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008944007670774},
isbn={978-989-758-402-2},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2020) - 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
IS - 2184-4321
AU - Takada, J.
AU - Ohta, M.
PY - 2020
SP - 767
EP - 774
DO - 10.5220/0008944007670774
PB - SciTePress