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

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

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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:: Yang, Yongchao; Kenyon, Garrett; Farrar, Charles; Mascarenas, David

Issue Date:: 2020-02-18

Research Org.:: Los Alamos National Lab. (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 G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION

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G - PHYSICS G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
G06T2207/10016 - Video

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N21/234363 - {by altering the spatial resolution, e.g. for clients with a lower screen resolution}
H04N5/232 - Devices for controlling television cameras, e.g. remote control {

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N29/4472 - {Mathematical theories or simulation}

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N21/234381 - {by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2291/0234 - Metals, e.g. steel

G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
G01H9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N5/50 - Tuning indicators

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N29/46 - by spectral analysis, e.g. Fourier analysis {or wavelet analysis

G - PHYSICS G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
G06T2207/20056 - Discrete and fast Fourier transform, [DFT, FFT]
G06T7/262 - using transform domain methods, e.g. Fourier domain methods
G06T2207/30108 - Industrial image inspection
G06T2207/20016 - Hierarchical, coarse-to-fine, multiscale or multiresolution image processing

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N5/23264 - {Vibration or motion blur correction}

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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.

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                    Yang, Yongchao, Kenyon, Garrett, Farrar, Charles, & Mascarenas, David. System and method for automated extraction of high resolution structural dynamics from video.  United States.

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                    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.

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@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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