Detecting imperceptible movements in structures by means of video magnification

Celestino Ordóñez; Carlos Cabo; Silverio García-Cortés; Agustín Menéndez

doi:10.1117/12.2270303

26 June 2017 Detecting imperceptible movements in structures by means of video magnification

Celestino Ordóñez, Carlos Cabo, Silverio García-Cortés, Agustín Menéndez

Proceedings Volume 10332, Videometrics, Range Imaging, and Applications XIV; 103320N (2017) https://doi.org/10.1117/12.2270303
Event: SPIE Optical Metrology, 2017, Munich, Germany

Abstract

The naked eye is not able to perceive very slow movements such as those occurring in certain structures under external forces. This might be the case of metallic or concrete bridges, tower cranes or steel beams. However, sometimes it is of interest to view such movements, since they can provide useful information regarding the mechanical state of those structures. In this work, we analyze the utility of video magnification to detect imperceptible movements in several types of structures. First, laboratory experiments were conducted to validate the method. Then, two different tests were carried out on real structures: one on a water slide and another on a tower crane. The results obtained allow us to conclude that image cross-correlation and video magnification is indeed a promising low-cost technique for structure health monitoring.

Citation Download Citation

Celestino Ordóñez, Carlos Cabo, Silverio García-Cortés, and Agustín Menéndez "Detecting imperceptible movements in structures by means of video magnification", Proc. SPIE 10332, Videometrics, Range Imaging, and Applications XIV, 103320N (26 June 2017); https://doi.org/10.1117/12.2270303

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