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A Study on Development of Portable Concrete Crack Measurement Device Using Image Processing Technique and Laser Sensors
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이미지 처리기법 및 레이저 센서를 이용한 휴대용 콘크리트 균열 측정 장치 개발에 관한 연구

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Type
Academic journal
Author
Seunghwan Seo (Korea Institute of Civil Engineering and Building Technology(KICT)) Syng-Yup Ohn (Korea Aerospace University) Dong-Hyun Kim (AICLOPS) Kiseok Kwak (KICT) Moonkyung Chung (KICT)
Journal
Korean Geosynthetics Society Journal of Korean Geosynthetics Society Vol.19 No.4 KCI Accredited Journals
Published
2020.12
Pages
41 - 50 (10page)

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A Study on Development of Portable Concrete Crack Measurement Device Using Image Processing Technique and Laser Sensors
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Abstract· Keywords

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Since cracks in concrete structures expedite corrosion of reinforced concrete over a long period of time, regular on-site inspections are essential to ensure structural usability and prevent degradation. Most of the safety inspections of facilities rely on visual inspection with naked eye, so cost and time consuming are severe, and the reliability of results differs depending on the inspector. In this study, a portable measuring device that can be used for safety diagnosis and maintenance was developed as a device that measures the width and length of concrete cracks through image analysis of cracks photographed with a camera. This device captures the cracks found within a close distance (3 m), and accurately calculates the unit pixel size by laser distance measurement, and automatically calculates the crack length and width with the image processing algorithm developed in this study. In measurement results using the crack image applied to the experiment, the measurement of the length of a 0.3 mm crack within a distance of 3 m was possible with a range of about 10% error. The crack width showed a tendency to be overestimated by detecting surrounding pixels due to vibration and blurring effect during the binarization process, but it could be effectively corrected by applying the crack width reduction function.
#Concrete crack #Image processing #Portable device #Laser sensor

Contents

ABSTRACT
요지
1. 서론
2. 균열 이미지 검출 방법
3. 균열 길이 및 폭 계산
4. 장치 개발 및 실내 시험 결과
5. 결론
References

References (12)

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Doihara, T. / 1993 / Crack measuring system based on Hierarchical Image Processing technique / International Archives of Photogrammetry and Remote Sensing 29(5):155~159 google schola Jee, K. H. / 2014 / Advanced structure damage measurement technology – crack image processing technique :11~13 google schola 김아람 / 2018 / 딥러닝과 영상처리기법을 이용한 콘크리트 지반 구조물 균열 탐지 / 한국지반공학회논문집 34(12):145~154 dbpia 김준희 / 2018 / 콘크리트 구조물의 자동화 균열탐지를 위한 라인 레이저 영상분석 / 한국전산구조공학회논문집 31(3):147~153 dbpia 이방연 / 2005 / 개선된 이진화와 형상분석 기법을 응용한 콘크리트 표면 균열의 화상처리 알고리즘 개발 / 콘크리트학회 논문집 17(3):361~368 dbpia

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