Practical image measurement of crack width for real concrete structure

Tomoyuki Yamaguchi, Shuji Hashimoto

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Crack width is an important data in the inspection and diagnosis for the safety management of concrete structures. Usually the crack width measurement is done manually by specialists using crack scale. However, it takes a long time and lacks the objectivity for quantitative analysis. Therefore, the importance of image processing for visual inspection has been increasing in civil and construction engineering. Recently, many methods for the crack width measurement have been proposed. We have already tried to measure crack width utilizing image processing. However, these methods concentrated only on the application to test specimens. In this paper, we proposes an improved image measurement method of crack width for the application to real concrete structures. Our method attached crack scale on the concrete surface in the image acquisition. Crack width is measured by the brightness of crack scale areas on the image with sub-pixel order accuracy. In the real world, the lighting condition is different in various environments. For its difference, this paper clarifies the efficient condition of our method for the practical use. The validity of the proposed technique is investigated through experiments with images of a real concrete surface.

    Original languageEnglish
    JournalIEEJ Transactions on Electronics, Information and Systems
    Volume127
    Issue number4
    Publication statusPublished - 2007

    Fingerprint

    Concrete construction
    Cracks
    Image processing
    Inspection
    Image acquisition
    Luminance
    Lighting
    Pixels
    Concretes
    Chemical analysis

    Keywords

    • Crack scale
    • Crack width
    • Image measurement
    • Practical use
    • Sub-pixel accuracy

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

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

    In: IEEJ Transactions on Electronics, Information and Systems, Vol. 127, No. 4, 2007.

    Research output: Contribution to journalArticle

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