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Related Experiment Video

Updated: Jul 16, 2026

Determining 3D Flow Fields via Multi-camera Light Field Imaging

Determining 3D Flow Fields via Multi-camera Light Field Imaging

Published on: March 6, 2013

Full-Field 3D Displacement Measurement of Suspended Ceiling Systems Under Seismic Loading Using a Consumer-Grade

Mearge Kahsay Seyfu¹, Yuan-Sen Yang¹, Cameron C W Flude²

¹Department of Civil Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Daan Dist., Taipei 10608, Taiwan.

Sensors (Basel, Switzerland)

|July 15, 2026

Summary

This study introduces a new 3D displacement measurement framework using consumer cameras for seismic testing of suspended ceilings. It accurately captures full-field motion, enabling better seismic performance assessment of vulnerable non-structural building components.

Keywords:

3D displacement measurement accuracy shaking table testing stereo vision suspended ceiling

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Area of Science:

Structural Engineering
Seismic Engineering
Non-structural Components

Background:

Suspended ceiling systems are highly vulnerable to seismic events, causing significant risks.
Traditional sensors have limitations in coverage and can affect test dynamics.
Optical methods are often impractical in shake-table tests due to environmental constraints.

Purpose of the Study:

To develop and validate an end-to-end 3D displacement measurement framework for seismic testing of suspended ceilings.
To overcome limitations of conventional and optical sensing methods in shake-table environments.
To enable detailed kinematic analysis of ceiling system behavior under seismic loading.

Main Methods:

Utilized consumer-grade cameras and purpose-built software for motion-based video trimming and calibration.
Implemented a robust multi-stage image-tracking pipeline for continuous trajectory analysis.
Employed a parallel processing architecture for efficient data computation.

Main Results:

Achieved Root Mean Square Error (RMSE) below 3 mm in all spatial directions during full-scale shake-table validation.
Demonstrated exact peak-frequency agreement in 9 out of 10 test cases.
Reduced processing time from over 27 hours to under 10 minutes using parallel processing.

Conclusions:

The developed framework provides a practical and scalable solution for full-field seismic performance assessment of non-structural systems.
Enabled detailed six-degree-of-freedom (6DoF) rigid-body analysis of panel failure sequences.
Offers a viable alternative to conventional instrumentation where it is logistically or physically infeasible.