A novel automatic concrete surface crack identification using isotropic undecimated wavelet transform

Hoang Nam Nguyen*, Tai-Yan Kam, Pi-Ying Cheng

*此作品的通信作者

    研究成果: Conference contribution同行評審

    7 引文 斯高帕斯(Scopus)

    摘要

    Traditionally, concrete surface cracks are manually measured and recorded by experienced inspectors who observe cracks with their naked eye. This task is very costly, time-consuming and dangerous. Some automatic crack detection techniques utilizing image processing have been proposed. However, it is very difficult to automatically identify cracks sufficiently fast and accurate. This paper presents a novel automatic algorithm for effectively identifying cracks in concrete structures, which can be applied to high resolution photographs. Firstly, as cracks can be considered as elongated dark objects in concrete surface images, all dark objects are roughly identified using Isotropic Undecimated Wavelet Transform (IUWT) and morphological image processing. Secondly, all previous detected dark objects are classified into crack and non-crack objects by analyzing their cross section pixel intensity profiles, which are computed perpendicularly across their centre-lines in the original input image, using a novel method based on Savitzky-Golay filter. Therefore, both local and global changes in crack width can be readily quantified. Experiments show that our method can automatically detect true cracks in concrete surface images using a unique set of parameters.

    原文English
    主出版物標題ISPACS 2012 - IEEE International Symposium on Intelligent Signal Processing and Communications Systems
    頁面766-771
    頁數6
    DOIs
    出版狀態Published - 1 十二月 2012
    事件20th IEEE International Symposium on Intelligent Signal Processing and Communications Systems, ISPACS 2012 - Tamsui, New Taipei City, Taiwan
    持續時間: 4 十一月 20127 十一月 2012

    出版系列

    名字ISPACS 2012 - IEEE International Symposium on Intelligent Signal Processing and Communications Systems

    Conference

    Conference20th IEEE International Symposium on Intelligent Signal Processing and Communications Systems, ISPACS 2012
    國家/地區Taiwan
    城市Tamsui, New Taipei City
    期間4/11/127/11/12

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