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https://hku.zoom.us/j/93040991383?pwd=DuCbyGrxKvb1KzvkSM3LoF0utas02O.1

Meeting ID: 930 4099 1383

Password: 023749

Abstract:

Since the beginning of this century, SLAM research has been widely explored and applied across various modern industries. However, its application in high-precision modeling of subway and high-speed rail tunnels, which are often dark or poorly lit, remains underexplored. Current methods predominantly rely on LiDAR for point cloud stitching to detect tunnel deformation, while multiple surface or line-array cameras are used independently to capture tunnel interiors and identify fracture traces. Although this approach reduces the complexity of device integration and enhances portability, it significantly lowers the efficiency of tunnel inspection systems. To address these challenges, this study introduces a novel inspection system designed for shield tunnel environments, which combines high-precision sensors such as a 2D terrestrial laser scanner and a high-resolution line-array camera. This system achieves an accuracy of 0.2 mm, aiming to simplify the inspection process while maintaining high precision. By integrating these sensors into a single inspection vehicle, the proposed system effectively balances accuracy, efficiency, and portability, overcoming the limitations of exiting methods.

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