Deformation Monitoring of a Building Structure Using a Motion Capture System

Hyo Seon Park, Keunhyoung Park, Yousok Kim, Se Woon Choi

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Conventional 1-D or 2-D displacement sensors are occasionally used to measure the deformation of a structure. However, a motion capture system (MCS) can measure the 3-D movements of markers attached to a target structure with high accuracy and a high sampling rate. Because markers can be easily attached to a structure, an MCS is useful for monitoring the dynamic motions of complex structures, such as buildings, using multiple markers. This study proposes a deformation measurement method for building structures using an MCS. The suggested measurement method consists of four stages: 1) setup of the MCS; 2) data acquisition; 3) coordinate transformation into a structural coordinate system; and (4) generation of the deformed shape. The feasibility of the suggested MCS-based measurement method was validated using a free-vibration test of a three-story experimental frame model. The displacement and deformed shape that were measured using an MCS were compared to the displacement and deformed shape measured using a laser displacement sensor, which is a conventional displacement sensor. The comparison results indicated that the MCS can overcome the limits of 1-D displacement sensors and easily and accurately obtain the deformed shape of a structure.

Original languageEnglish
Article number6983621
Pages (from-to)2276-2284
Number of pages9
JournalIEEE/ASME Transactions on Mechatronics
Issue number5
Publication statusPublished - 2015 Oct 1

Bibliographical note

Publisher Copyright:
© 1996-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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