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http://dx.doi.org/10.7848/ksgpc.2021.39.3.179

A Study on Improving the Efficiency of Facility Safety Inspection Work Using Images  

Jeon, Kyungsik (Dept. of Construction Safety, Kyonggi University)
Kim, Jintae (Dept. of Construction Safety, Kyonggi University)
Lee, Byoungkil (Dept. of Civil Engineering, Kyonggi University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.39, no.3, 2021 , pp. 179-186 More about this Journal
Abstract
In general, the daily safety inspection activities, which investigate damages in structures and measures the size of the damage, have been relied heavily on the visual inspection so far. Since the probe of the condition and performance of facilities by such personnel is often dependent on the subjective judgment of the investigator, the consistency and repeatability of the probing results may reduce. Particularly, damage located in a difficult-to-reach place depends mainly on experience with the naked eye, and an unsafe method using a ladder has mainly applied when necessary. Therefore, in this study, we tried to propose a way of using images that can reduce the deviation between safety inspection investigators, enhance objectivity, and improve the safety of workers. In this study, we have applied homographic transformation as a method of correcting the image. As a result of analyzing the size of the damage in the corrected image of the test subject, it confirms that the accuracy of measuring the magnitude of the damage can satisfy the target levels of 5.0mm and 0.005m2, the target accuracy levels. As a result of the field verification test to which the proposed image correction technique applied, the coefficient of variation of the crack length in the structure decreased from 5.4~7.0% to 0.072~0.12%, and that of the damaged area from 10.9% to 1.6%. It confirms that the measurement accuracy is improved. Therefore, it is expected that this study on the image utilization technique in safety inspection activities can increase the accuracy of damage measurement and improve the reliability of the safety inspection reports and exterior survey drawings.
Keywords
Facility; Safety Inspection; Homographic Transformation; Rectification; Scaling;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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