Aiming at the problem of high data demand for three-dimensional (3D) reconstruction based on a single data source, a large-scale scene 3D reconstruction method using crowdsourced images is proposed. Firstly, dense point clouds are extracted from satellite images and aerial images respectively. For satellite images, den...
Xiao-Wei Chen, Xin Zhou, Qiang Zhang et al.· International Conference on...· 0 citations
Accurate three-dimensional characterization of asphalt pavement texture requires both reliable surface reconstruction and quantitative interpretation of reconstructed geometry. This study evaluated a passive binocular stereo vision workflow integrating camera calibration, image preprocessing, AANet-based disparity esti...
Spatial location information of tunnel surface defects is crucial for tunnel safety assessment. Existing methods mainly focus on 2D defect detection and lack efficient 3D spatial localization capability. To address the issue, a deep learning-based tunnel surface defect 3D reconstruction and spatial mapping method was p...
Zhengfang Wang, Sheng Gao, Zhi-Tong Huo et al.· International Conference on...· 0 citations
The proposed speckle-assisted binocular 3D reconstruction method based on a multi-scale adaptive feature fusion algorithm offers a reliable technical solution for efficient texture-depth analysis and practical pavement condition assessment.
Zhirong Li, Wen-Yan Jia, Fu-Zhong Bai et al.· Photonics· 0 citations
Closed-circuit television (CCTV)-based inspection provides limited depth information and cannot directly quantify the three-dimensional geometry of drainage-pipeline defects. Moreover, the scarcity of annotated point-cloud data and the topological artifacts produced by conventional surface-reconstruction methods hinder...
Shuwei Zhai, Mao-Lin Yao, Xing-Yi Wang et al.· Infrastructures· 0 citations
Reliable characterization of structural defects requires methods capable of resolving both directly observable surface damage and damage that is not visible from the inspected surface. This study presents two complementary non-contact, vision-based approaches for the detection and quantitative characterization of defec...
Mehrdad Shafiei Dizaji, D. Harris· 0 citations
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