The paper introduces two non‑contact, vision‑based methods for detecting and quantifying structural defects in steel components. The first method uses high‑resolution laser scanning to create 3D point clouds, comparing measured and reference data to locate surface damage, measure geometric loss, and map defect geometry into finite element models. The second method combines full‑field surface deformation data from 3D digital image correlation with finite element model updating and topology optimization to infer subsurface defects from their effect on structural response. Experimental validation on steel‑beam specimens with controlled defects shows both approaches can accurately identify and quantify defect geometry, offering complementary insights for visible and subsurface damage assessment.
By Mehrdad Shafiei Dizaji, Devin Harris
The paper introduces 3D-TARGeT, an automated method that uses inexpensive rectangular tags to register and georeference multi‑temporal UAV laser scans of underground mine stopes. By combining tag detection, geometric matching, and rigid transformation estimation, the technique achieves centimetre‑level accuracy, outperforming conventional automatic registration methods. The authors validated the approach on four simulated stope scans, demonstrating its potential to streamline data integration for geotechnical analysis and mine planning.
By Dibyayan Patra, Simit Raval, Pasindu Ranasinghe, Bikram Banerjee, Ismet Canbulat
arXiv:2512. 09062v2 Announce Type: replace-cross Abstract: Accurate 3D scene interpretation in active construction sites is essential for progress monitoring, safety assessment, and digital twin development.
By Seongyong Kim, Yong Kwon Cho
The paper investigates how processing parameters affect the accuracy of UAV photogrammetry. By testing 768 processing variants on ten datasets over 1.5 years, the study finds that the best configuration yields an RMSE of 16 mm, while the worst reaches 303 mm. Key factors include the number of ground control points, camera calibration corrections, and the use of Post‑Processing Kinematic GNSS for camera center determination, which together reduce systematic errors by more than half.
By Pawe{\l} \'Cwi\k{a}ka{\l}a, Edyta Puniach, El\.zbieta Pastucha, Wojciech Gruszczy\'nski
arXiv:2609.15833v1 Announce Type: new
Abstract: Cultural heritage documentation increasingly relies on image-based 3D surface reconstruction, with photogrammetry software making such workflows access...
By Baptiste Brument, Robin Bruneau, Benjamin Coupry, Vincent Demoulin, Jean M\'elou, Antoine Laurent, Fabien Castan, Jean-Denis Durou, Lilian Calvet
arXiv:2605.08753v2 Announce Type: replace
Abstract: Advanced manufacturing technologies allow for the production of intricate parts featuring high shape complexity and spatially-varying material comp...
By Mariafrancesca Patalano, Giovanna Capizzi, Kamran Paynabar