Surface Defect-Extended BIM Generation Leveraging UAV Images and Deep Learning

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Abstract

Defect inspection of existing buildings is receiving increasing attention for digitalization transfer in the construction industry. The development of drone technology and artificial intelligence has provided powerful tools for defect inspection of buildings. However, integrating defect inspection information detected from UAV images into semantically rich building information modeling (BIM) is still challenging work due to the low defect detection accuracy and the coordinate difference between UAV images and BIM models. In this paper, a deep learning-based method coupled with transfer learning is used to detect defects accurately; and a texture mapping-based defect parameter extraction method is proposed to achieve the mapping from the image U-V coordinate system to the BIM project coordinate system. The defects are projected onto the surface of the BIM model to enrich a surface defect-extended BIM (SDE-BIM). The proposed method was validated in a defect information modeling experiment involving the No. 36 teaching building of Nantong University. The results demonstrate that the methods are widely applicable to various building inspection tasks.

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Yang, L., Liu, K., Ou, R., Qian, P., Wu, Y., Tian, Z., … Yang, F. (2024). Surface Defect-Extended BIM Generation Leveraging UAV Images and Deep Learning. Sensors, 24(13). https://doi.org/10.3390/s24134151

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