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Title: System and method for automated extraction of high resolution structural dynamics from video

Abstract

A method for extracting vibrational modes of a structure includes: receiving a plurality of video frames, each of the video frames including a plurality of pixels; decomposing each of the video frames on a plurality of spatial scales in accordance with complex steerable pyramid filters to obtain a filter response for each of the spatial scales; computing a plurality of local phases of the pixels of each frame; removing a temporal mean from each frame to obtain a plurality of factored vibration motion functions; performing principal component analysis on the factored vibration motion functions to obtain principal components; blind source separating the principal components to compute a plurality of modal coordinates; computing frequency and damping ratios in accordance with the modal coordinates; and outputting the computed frequency and damping ratios.

Inventors:
; ; ;
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1632585
Patent Number(s):
10,567,655
Application Number:
15/708,986
Assignee:
Triad National Security, LLC (Los Alamos, NM)
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Patent
Resource Relation:
Patent File Date: 09/19/2017
Country of Publication:
United States
Language:
English

Citation Formats

Yang, Yongchao, Kenyon, Garrett, Farrar, Charles, and Mascarenas, David. System and method for automated extraction of high resolution structural dynamics from video. United States: N. p., 2020. Web.
Yang, Yongchao, Kenyon, Garrett, Farrar, Charles, & Mascarenas, David. System and method for automated extraction of high resolution structural dynamics from video. United States.
Yang, Yongchao, Kenyon, Garrett, Farrar, Charles, and Mascarenas, David. Tue . "System and method for automated extraction of high resolution structural dynamics from video". United States. https://www.osti.gov/servlets/purl/1632585.
@article{osti_1632585,
title = {System and method for automated extraction of high resolution structural dynamics from video},
author = {Yang, Yongchao and Kenyon, Garrett and Farrar, Charles and Mascarenas, David},
abstractNote = {A method for extracting vibrational modes of a structure includes: receiving a plurality of video frames, each of the video frames including a plurality of pixels; decomposing each of the video frames on a plurality of spatial scales in accordance with complex steerable pyramid filters to obtain a filter response for each of the spatial scales; computing a plurality of local phases of the pixels of each frame; removing a temporal mean from each frame to obtain a plurality of factored vibration motion functions; performing principal component analysis on the factored vibration motion functions to obtain principal components; blind source separating the principal components to compute a plurality of modal coordinates; computing frequency and damping ratios in accordance with the modal coordinates; and outputting the computed frequency and damping ratios.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {2}
}

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