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http://hdl.handle.net/10397/106171
Title: | Fine-grained point cloud semantic segmentation of complex railway bridge scenes from UAVs using improved DGCNN | Authors: | Qiu, S Liu, XH Peng, J Wang, WD Wang, J Wang, SC Xiong, JP Hu, WB |
Issue Date: | 2023 | Source: | Structural control and health monitoring, 2023, v. 2023, 3733799 | Abstract: | Automatic semantic segmentation of point clouds in railway bridge scenes is a crucial step in the digitization process and is required for a variety of subapplications including digital twin reconstruction and component geometric quality verification. This paper details a method for reliably and effectively segmenting point clouds acquired from complex railway bridge scenes by unmanned aerial vehicles (UAVs). The method involves segmenting seven common infrastructure elements in railway bridge point clouds using an improved DGCNN after processing low-quality point clouds from UAVs with a score-based denoising algorithm. The segmentation performance of the network is measured by averaging the intersection to union ratio between the segmentation results and the true labels of different elements, i.e., the mean intersection over union (mIoU). The proposed method is evaluated on three different scenes of railway bridges and achieved mIoU values of 99.18%, 90.76%, and 85.84%, respectively, at three levels of complexity ranging from easy to difficult. The results demonstrate that the proposed method captures the most discriminative features from low-quality point clouds, allowing for the accurate and efficient digital representation of railway bridge scenes. | Publisher: | John Wiley & Sons | Journal: | Structural control and health monitoring | ISSN: | 1545-2255 | EISSN: | 1545-2263 | DOI: | 10.1155/2023/3733799 | Rights: | Copyright © 2023 Shi Qiu et al. Tis is an open access article distributed under the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The following publication Qiu, S., Liu, X., Peng, J., Wang, W., Wang, J., Wang, S., Xiong, J., & Hu, W. (2023). Fine-Grained Point Cloud Semantic Segmentation of Complex Railway Bridge Scenes from UAVs Using Improved DGCNN. Structural Control and Health Monitoring, 2023, 3733799 is available at https://dx.doi.org/10.1155/2023/3733799. |
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