A Synchronized Multipoint Vision-Based System for Displacement Measurement of Civil Infrastructures
Joint Authors
Ho, Hoai-Nam
Lee, Jong-Han
Lee, Jong-Jae
Park, Young-Soo
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
This study presents an advanced multipoint vision-based system for dynamic displacement measurement of civil infrastructures.
The proposed system consists of commercial camcorders, frame grabbers, low-cost PCs, and a wireless LAN access point.
The images of target panels attached to a structure are captured by camcorders and streamed into the PC via frame grabbers.
Then the displacements of targets are calculated using image processing techniques with premeasured calibration parameters.
This system can simultaneously support two camcorders at the subsystem level for dynamic real-time displacement measurement.
The data of each subsystem including system time are wirelessly transferred from the subsystem PCs to master PC and vice versa.
Furthermore, synchronization process is implemented to ensure the time synchronization between the master PC and subsystem PCs.
Several shaking table tests were conducted to verify the effectiveness of the proposed system, and the results showed very good agreement with those from a conventional sensor with an error of less than 2%.
American Psychological Association (APA)
Ho, Hoai-Nam& Lee, Jong-Han& Park, Young-Soo& Lee, Jong-Jae. 2012. A Synchronized Multipoint Vision-Based System for Displacement Measurement of Civil Infrastructures. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-478133
Modern Language Association (MLA)
Ho, Hoai-Nam…[et al.]. A Synchronized Multipoint Vision-Based System for Displacement Measurement of Civil Infrastructures. The Scientific World Journal No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-478133
American Medical Association (AMA)
Ho, Hoai-Nam& Lee, Jong-Han& Park, Young-Soo& Lee, Jong-Jae. A Synchronized Multipoint Vision-Based System for Displacement Measurement of Civil Infrastructures. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-478133
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-478133