Pixel-wise structural motion tracking
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A flexible, low-cost, and target-free approach for extracting motion time histories from video recordings of structures during an event
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Four optical flow techniques are considered for tracking structure motions recorded in videos
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Nonlinear optimization of the flow fields is found to be essential for accuracy in earthquake scenarios
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A combination of parametric video stabilization, 3D denoising, and outlier robust camera motion estimation are employed to mitigate the effects of camera motion and video encoding artifacts
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Statistical approach for background motion subtraction was utilized to further correct the undesired camera motion
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The developed method has potential for post-disaster forensic scenarios
Related Publications
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Khaloo, A. and Lattanzi, D. (2017) "Pixel-Wise Structural Motion Tracking from Rectified Repurposed Videos," Structural Control and Health Monitoring, doi:10.1002/stc.2009.
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Khaloo, A., and Lattanzi, D. (2016) "Repurposing Video Recordings for Structure Motion Estimations," SPIE Smart Structures and Materials+ Nondestructive Evaluation and Health Monitoring pp. 980410-980410. International Society for Optics and Photonics, Las Vegas, NV, March 2016.
