Structural dynamic displacement vision system using digital image processing

Hyoung Suk Choi, Jin Hwan Cheung, Sang Hyo Kim, Jin Hee Ahn

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

This study introduces dynamic displacement vision system (DDVS), which is applicable for imaging unapproachable structures using a hand-held digital video camcorder and is more economical than the existing contact and contactless measurement methods of dynamic displacement and deformation. This proposed DDVS method is applied to the Region of Interest (ROI) resizing and coefficient updating at each time step to improve the accuracy of the measurement from the digital image. Thus, after evaluating the algorithms conducted in this study by the static and dynamic verification, the measurements usability by calculating the dynamic displacement of the masonry specimen, and the two-story steel frame specimen is evaluated under uniaxial seismic loading. The algorithm of the proposed method in this study, despite the relatively low resolution during frozen, slow, and seismic motions, has precision and usability that can replace the existing displacement transducer. Moreover, the method can be effectively applied to even fast behavior for multi-measurement positions like the seismic simulation test using large scale specimen. DDVS, using the consecutive images of the structures with an economic, hand-held digital video camcorder is a more economical displacement sensing concept than the existing contact and contactless measurement methods.

Original languageEnglish
Pages (from-to)597-608
Number of pages12
JournalNDT and E International
Volume44
Issue number7
DOIs
Publication statusPublished - 2011 Nov 1

Fingerprint

digital systems
dynamic structural analysis
Structural dynamics
image processing
Image processing
Position measurement
Steel
masonry
Transducers
economics
transducers
Imaging techniques
steels
Economics
coefficients

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Choi, Hyoung Suk ; Cheung, Jin Hwan ; Kim, Sang Hyo ; Ahn, Jin Hee. / Structural dynamic displacement vision system using digital image processing. In: NDT and E International. 2011 ; Vol. 44, No. 7. pp. 597-608.
@article{effd777a7af14ec1ae8076b2ffac71c3,
title = "Structural dynamic displacement vision system using digital image processing",
abstract = "This study introduces dynamic displacement vision system (DDVS), which is applicable for imaging unapproachable structures using a hand-held digital video camcorder and is more economical than the existing contact and contactless measurement methods of dynamic displacement and deformation. This proposed DDVS method is applied to the Region of Interest (ROI) resizing and coefficient updating at each time step to improve the accuracy of the measurement from the digital image. Thus, after evaluating the algorithms conducted in this study by the static and dynamic verification, the measurements usability by calculating the dynamic displacement of the masonry specimen, and the two-story steel frame specimen is evaluated under uniaxial seismic loading. The algorithm of the proposed method in this study, despite the relatively low resolution during frozen, slow, and seismic motions, has precision and usability that can replace the existing displacement transducer. Moreover, the method can be effectively applied to even fast behavior for multi-measurement positions like the seismic simulation test using large scale specimen. DDVS, using the consecutive images of the structures with an economic, hand-held digital video camcorder is a more economical displacement sensing concept than the existing contact and contactless measurement methods.",
author = "Choi, {Hyoung Suk} and Cheung, {Jin Hwan} and Kim, {Sang Hyo} and Ahn, {Jin Hee}",
year = "2011",
month = "11",
day = "1",
doi = "10.1016/j.ndteint.2011.06.003",
language = "English",
volume = "44",
pages = "597--608",
journal = "NDT and E International",
issn = "0963-8695",
publisher = "Elsevier Limited",
number = "7",

}

Structural dynamic displacement vision system using digital image processing. / Choi, Hyoung Suk; Cheung, Jin Hwan; Kim, Sang Hyo; Ahn, Jin Hee.

In: NDT and E International, Vol. 44, No. 7, 01.11.2011, p. 597-608.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Structural dynamic displacement vision system using digital image processing

AU - Choi, Hyoung Suk

AU - Cheung, Jin Hwan

AU - Kim, Sang Hyo

AU - Ahn, Jin Hee

PY - 2011/11/1

Y1 - 2011/11/1

N2 - This study introduces dynamic displacement vision system (DDVS), which is applicable for imaging unapproachable structures using a hand-held digital video camcorder and is more economical than the existing contact and contactless measurement methods of dynamic displacement and deformation. This proposed DDVS method is applied to the Region of Interest (ROI) resizing and coefficient updating at each time step to improve the accuracy of the measurement from the digital image. Thus, after evaluating the algorithms conducted in this study by the static and dynamic verification, the measurements usability by calculating the dynamic displacement of the masonry specimen, and the two-story steel frame specimen is evaluated under uniaxial seismic loading. The algorithm of the proposed method in this study, despite the relatively low resolution during frozen, slow, and seismic motions, has precision and usability that can replace the existing displacement transducer. Moreover, the method can be effectively applied to even fast behavior for multi-measurement positions like the seismic simulation test using large scale specimen. DDVS, using the consecutive images of the structures with an economic, hand-held digital video camcorder is a more economical displacement sensing concept than the existing contact and contactless measurement methods.

AB - This study introduces dynamic displacement vision system (DDVS), which is applicable for imaging unapproachable structures using a hand-held digital video camcorder and is more economical than the existing contact and contactless measurement methods of dynamic displacement and deformation. This proposed DDVS method is applied to the Region of Interest (ROI) resizing and coefficient updating at each time step to improve the accuracy of the measurement from the digital image. Thus, after evaluating the algorithms conducted in this study by the static and dynamic verification, the measurements usability by calculating the dynamic displacement of the masonry specimen, and the two-story steel frame specimen is evaluated under uniaxial seismic loading. The algorithm of the proposed method in this study, despite the relatively low resolution during frozen, slow, and seismic motions, has precision and usability that can replace the existing displacement transducer. Moreover, the method can be effectively applied to even fast behavior for multi-measurement positions like the seismic simulation test using large scale specimen. DDVS, using the consecutive images of the structures with an economic, hand-held digital video camcorder is a more economical displacement sensing concept than the existing contact and contactless measurement methods.

UR - http://www.scopus.com/inward/record.url?scp=79960289213&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960289213&partnerID=8YFLogxK

U2 - 10.1016/j.ndteint.2011.06.003

DO - 10.1016/j.ndteint.2011.06.003

M3 - Article

AN - SCOPUS:79960289213

VL - 44

SP - 597

EP - 608

JO - NDT and E International

JF - NDT and E International

SN - 0963-8695

IS - 7

ER -