Paper
16 February 2023 An automatic algorithm of rebar detection in bridge decks from ground penetrating radar data
Author Affiliations +
Proceedings Volume 12591, Sixth International Conference on Traffic Engineering and Transportation System (ICTETS 2022); 125913T (2023) https://doi.org/10.1117/12.2668123
Event: 6th International Conference on Traffic Engineering and Transportation System (ICTETS 2022), 2022, Guangzhou, China
Abstract
In this paper, a fully automatic algorithm to detect rebar in reinforced concrete from Ground Penetrating Radar (GPR) data is developed and validated. GPR is a widely used electromagnetic test method in bridge engineering, which is efficient, non-destructive, and sensitive to the dielectric difference. The exact rebar locations can be known from the surveyed GPR data of bridge decks manually, which is time-consuming. Therefore, an automatic, accurate and robust algorithm is necessary to engineering applications. The automatic algorithm proposed in the paper is a pattern recognition method. First, a template of a rebar hyperbola in a GRP image is selected; second, a rebar is detected from the local minimum points in the map of Sum of Square Difference (SSD); third, an output file is created and saved, including the geographical location of each detect rebar. Finally, the proposed method is validated from field tests in a reinforced concrete bridge, and the detection accuracy is 91.1%, which is very promising.
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Hao Liu and Huailin Liu "An automatic algorithm of rebar detection in bridge decks from ground penetrating radar data", Proc. SPIE 12591, Sixth International Conference on Traffic Engineering and Transportation System (ICTETS 2022), 125913T (16 February 2023); https://doi.org/10.1117/12.2668123
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KEYWORDS
Bridges

Detection and tracking algorithms

Algorithm development

Dielectrics

Ground penetrating radar

Nondestructive evaluation

Pattern recognition

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