SMART SKY EYE System for Preliminary Structural Safety Assessment of Buildings Using Unmanned Aerial Vehicles

Jaehoon Bae, Jonghoon Lee, Arum Jang, Young K. Ju, Min Jae Park

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The development of unmanned aerial vehicles (UAVs) is expected to become one of the most commercialized research areas in the world over the next decade. Globally, unmanned aircraft have been increasingly used for safety surveillance in the construction industry and civil engineering fields. This paper presents an aerial image-based approach using UAVs to inspect cracks and deformations in buildings. A state-of-the-art safety evaluation method termed SMART SKY EYE (Smart building safety assessment system using UAV) is introduced; this system utilizes an unmanned airplane equipped with a thermal camera and programmed with various surveying efficiency improvement methods, such as thermography, machine-learning algorithms, and 3D point cloud modeling. Using this method, crack maps, crack depths, and the deformations of structures can be obtained. Error rates are compared between the proposed and conventional methods.

Original languageEnglish
Article number2762
Issue number7
Publication statusPublished - 2022 Apr 1

Bibliographical note

Funding Information:
Funding: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. NRF-2021R1A5A1032433 & NRF-2020R1A2C3005687). The authors are grateful to the authorities for their support.

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.


  • safety inspection
  • structural safety assessment
  • thermography
  • unmanned aerial vehicle

ASJC Scopus subject areas

  • Analytical Chemistry
  • Information Systems
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering


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