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Civil-Comp Conferences
ISSN 2753-3239
ISSN 2753-3239
CCC: 1
PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
Paper 4.3
Application of a Robust Photogrammetry Method for Uplift Measurements of Railway Catenary Systems in Noisy Backgrounds
T. Jiang, A. Ronnquist and G.T.
Froseth
Department of Structural Engineering, Norwegian University of Science and Technology, Norway
Full Bibliographic Reference for this paper
T. Jiang, A. Ronnquist, G.T.
Froseth, "Application of a Robust Photogrammetry Method
for Uplift Measurements of Railway Catenary
Systems in Noisy Backgrounds", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance",
Civil-Comp Press, Edinburgh, UK,
Online volume: CCC 1, Paper 4.3, 2022, doi:10.4203/ccc.1.4.3
Keywords: vision-based line-tracking system, image processing, photogrammetry,
railway catenary, contact wire uplift.
Abstract
A portable vision-based tracking system is proposed and applied to enable low-cost,
remote, noncontact and non-marker uplift measurement of railway catenary wires.
The challenge in measuring the vertical displacement of the railway catenary systems
is to detect linear rigid body motion in front of a noisy background with a high
sampling frequency. To detect wires in front of noisy backgrounds, a novel line
tracking method is proposed and used to achieve robust and accurate measurements.
The vision-based tracking system with the line tracking method has been successfully
applied to measure the vertical displacements of the railway catenary wires in front of
a noisy background. The vibration of the catenary wires is simultaneously obtained
by the vision-based tracking system and laser displacement meter at the same high
sampling frequency. The accuracy, robustness and applicability of the proposed
tracking system are demonstrated through the comparison with the laser displacement
meter. From the obtained results, it can be concluded that the vision-based tracking
system can be used for filed uplift measurement of railway catenary systems, and
offers the attractive advantages of remote, noncontact and non-marker measurement,
without track access, easy to installation and application.
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