A method of lining seam elimination with angle adaptation and rectangular mark for road tunnel concrete lining images

IET Image Process. Pub Date : 2021-03-24 DOI:10.1049/IPR2.12177

Zhong-si Qu, Y. Zhong, Ling Liu

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引用次数: 1

Abstract

Road Tunnels are an important part of the current road transportation infrastructure. As the main form of tunnel lining diseases, cracks are easy to interact with other areas, which seriously affects the safe operation of the tunnel. Due to the similarity of brightness and linearity between surface cracks and lining cracks, the existing crack detection algorithms can not extract cracks accurately and quickly. An algorithm of lining seam crack elimination with rectangular mark is proposed here. First, the line segments in the image are detected by the Line Segment Detector algorithm based on the coarse percolation detection of the crack. Second, the distribution directions are calculated, and cracks from the lining seams are distinguished by the adaptive threshold judgment method. Third, by using the distribution characteristics of pixels, the line segments are extended to form rectangular marks perpendicular to the direction of lining seams. Finally, the marking information is used to remove the lining joints and obtain the real surface cracks of tunnel lining. Experimental results show that the algorithm can quickly and effectively remove any shape distribution of lining seam. The algorithm ﬁlls in the of concrete tunnel lining surface crack

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一种基于角度自适应和矩形标记的道路隧道混凝土衬砌图像衬砌缝消除方法

公路隧道是当前道路交通基础设施的重要组成部分。裂缝作为隧道衬砌病害的主要形式，极易与其他区域相互作用，严重影响隧道的安全运行。由于表面裂纹与衬里裂纹在亮度和线性度上的相似性，现有的裂纹检测算法无法准确、快速地提取裂纹。提出了一种利用矩形标记消除衬砌缝裂纹的算法。首先，采用基于裂纹粗渗检测的线段检测算法检测图像中的线段;其次，计算裂缝的分布方向，采用自适应阈值判断方法区分衬砌裂缝;第三，利用像素的分布特性，将线段扩展成垂直于衬砌接缝方向的矩形标记。最后利用标记信息去除衬砌接缝，得到真实的隧道衬砌表面裂缝。实验结果表明，该算法能够快速有效地去除衬砌缝的任意形状分布。该算法适用于混凝土隧道衬砌表面裂缝的修补

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IET Image Process.

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