Practical image measurement of crack width for real concrete structure

Tomoyuki Yamaguchi, Shuji Hashimoto

    研究成果: Article

    19 引用 (Scopus)

    抄録

    Crack width is an important data item in inspection and diagnosis for the safety management of concrete structures. Usually the crack width measurement is performed manually by specialists using a crack scale. However, it takes a long time and lacks the objectivity needed for quantitative analysis. Therefore, the importance of image processing for visual inspection has been increasing in civil and construction engineering. Recently, many methods for crack width measurement have been proposed. We have already tried to measure crack width utilizing image processing. However, these methods have concentrated only on the application to test specimens. In this paper, we propose an improved image measurement method for crack width determination, intended for application to real concrete structures. In our method, a crack scale is applied to the concrete surface for image acquisition. The crack width is measured by the brightness of the crack scale areas on the image with sub-pixel order accuracy. In the real world, the lighting conditions differ in various environments. To deal with such differences, this paper clarifies the conditions of effectiveness of our method for practical use. The validity of the proposed technique is investigated by experiments with images of a real concrete surface.

    元の言語English
    ページ(範囲)1-12
    ページ数12
    ジャーナルElectronics and Communications in Japan
    92
    発行部数10
    DOI
    出版物ステータスPublished - 2009 10

    Fingerprint

    concrete structures
    Concrete Structures
    Concrete construction
    Crack
    cracks
    Cracks
    image processing
    Inspection
    inspection
    Image Processing
    Image processing
    safety management
    Sub-pixel
    Image Acquisition
    Image acquisition
    Brightness
    Quantitative Analysis
    illuminating
    quantitative analysis
    Luminance

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Computer Networks and Communications
    • Physics and Astronomy(all)
    • Signal Processing
    • Applied Mathematics

    これを引用

    Practical image measurement of crack width for real concrete structure. / Yamaguchi, Tomoyuki; Hashimoto, Shuji.

    :: Electronics and Communications in Japan, 巻 92, 番号 10, 10.2009, p. 1-12.

    研究成果: Article

    Yamaguchi, Tomoyuki ; Hashimoto, Shuji. / Practical image measurement of crack width for real concrete structure. :: Electronics and Communications in Japan. 2009 ; 巻 92, 番号 10. pp. 1-12.
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