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A comparison between laser, scanning, photogrammetry and infrared scanning to create 3D digital models of existing concrete bridges

Abstract

Routine bridge inspections usually consist of visual observations. These inspections are time-consuming and
subjective. There is a need to identify new inspection techniques for infrastructure that reduce traffic
disturbance, and improve the efficiency and reliability of the acquired data. This study compared the performance of three different imaging technologies for the three-dimensional (3D) geometric modelling of existing structures: terrestrial laser scanning, close-range photogrammetry, and infrared scanning. Each technology was used to assess six existing concrete railway bridges. The technologies were compared in terms of geometric deviations, visualization capabilities, the level of the inspector’s experience, and degree of automation. The results suggest that all methods investigated can be used to create 3D models, however, with
different level of completeness.
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Category

Academic chapter

Language

English

Author(s)

  • Cosmin Popescu
  • Björn Täljsten
  • Thomas Blanksvärd
  • Lennart Elfgren

Affiliation

  • SINTEF Narvik
  • Luleå University of Technology

Year

2020

Publisher

International Association for Bridge and Structural Engineering

Book

IABSE SYMPOSIUM Wroclaw 2020

ISBN

9783857481697

Page(s)

1101 - 1108

External resources

View this publication at Norwegian Research Information Repository