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

Lei Yang1,2, Keju Liu3, Ruisi Ou3

  • 1Key Laboratory of Urban Land Resources Monitoring and Simulation, Ministry of Natural Resources, Shenzhen 518034, China.

Sensors (Basel, Switzerland)
|July 13, 2024
PubMed
Summary

This study introduces an accurate deep learning method for detecting building defects from drone images. It maps these defects onto Building Information Models (BIM) for improved digitalization in construction.

Keywords:
BIMUAVdeep learningsurface defect detectiontexture mapping

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Area of Science:

  • Construction Science
  • Computer Vision
  • Digitalization in Construction

Background:

  • Building defect inspection is crucial for construction digitalization.
  • Drone and AI technologies offer advanced inspection tools.
  • Integrating UAV defect data into Building Information Modeling (BIM) faces accuracy and coordinate challenges.

Purpose of the Study:

  • To develop an accurate defect detection method for UAV images.
  • To establish a coordinate mapping technique for integrating defect data into BIM.
  • To create an enriched BIM model with surface defect information.

Main Methods:

  • A deep learning approach combined with transfer learning for defect detection.
  • A texture mapping method to translate image coordinates to BIM project coordinates.
  • Projection of detected defects onto BIM surfaces to create a Surface Defect-Extended BIM (SDE-BIM).

Main Results:

  • High accuracy in defect detection using the deep learning method.
  • Successful mapping of defects from UAV images to the BIM model.
  • Demonstrated applicability in a real-world case study at Nantong University.

Conclusions:

  • The proposed method effectively integrates UAV-based defect inspection data into BIM.
  • This approach enhances the digitalization of existing buildings.
  • The validated methods show broad applicability for diverse building inspection tasks.