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Published on: September 29, 2019
TLS data for cracks detection in building walls.
Paulina Stałowska1, Czesław Suchocki1
1Faculty of Civil Engineering, Environmental and Geodetic Sciences, Koszalin University of Technology, Śniadeckich 2, Koszalin 75-453, Poland.
Terrestrial laser scanning (TLS) can detect building cracks by analyzing 3D coordinates and laser reflection intensity. This study develops a methodology for improved crack detection in civil engineering applications.
Area of Science:
- Civil Engineering
- Geomatics
- Non-destructive Testing
Background:
- Building deterioration is a significant concern in civil engineering.
- Terrestrial Laser Scanning (TLS) is a popular non-destructive remote sensing technique.
- TLS can capture 3D spatial coordinates and radiometric intensity data.
Purpose of the Study:
- To explore the full potential of TLS for detecting building wall cracks.
- To investigate the influence of scanner technical parameters and measurement conditions on crack detection accuracy.
- To develop an optimized methodology for crack detection using TLS.
Main Methods:
- Utilized TLS to capture point cloud data, including 3D coordinates and intensity values.
- Analyzed both spatial and radiometric data for enhanced crack detection.
- Examined the impact of scanner parameters and geometric conditions on measurement results.
- Collected datasets from sample objects with cracks and real buildings in poor condition.
Main Results:
- Combined analysis of 3D coordinates and intensity data improves crack detection reliability.
- Identified key technical and geometric factors affecting TLS performance for crack detection.
- Demonstrated the possibilities and limitations of TLS in assessing building wall integrity.
- Validated the developed methodology on real-world structures.
Conclusions:
- TLS is a valuable tool for non-destructive detection of building cracks.
- Integrating intensity data with 3D coordinates enhances detection accuracy.
- A refined measurement methodology optimizes TLS application for structural health monitoring.
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