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 Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1632585
- Patent Number(s):
- 10567655
- Application Number:
- 15/708,986
- Assignee:
- Triad National Security, LLC (Los Alamos, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 09/19/2017
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
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 = {Tue Feb 18 00:00:00 EST 2020},
month = {Tue Feb 18 00:00:00 EST 2020}
}
Works referenced in this record:
Principal Component Analysis and Blind Separation of Sources for Optical Imaging of Intrinsic Signals
journal, May 2000
- Stetter, M.; Schießl, I.; Otto, T.
- NeuroImage, Vol. 11, Issue 5
Riesz Pyramids For Fast Phase-Based Video Magnification
patent-application, July 2015
- Wadhwa, Neal; Rubinstein, Michael; Durand, Frederic
- US Patent Application 14/592211; 20150195430