基于全景展开图像的隧道衬砌渗漏水数字化识别方法研究

On Digital Identification of Water Leakage at Tunnel Lining Based on the Panoramic Developed Image

文章通过隧道衬砌展开影像生成器软件对隧道衬砌渗水区域采集影像进行特征点提取、图像匹配、模型识别、图像展开与拼接处理,得到隧道衬砌的全景展开图像。利用图像分割与处理技术,对全景图像采用灰度图像转换、阀值选取、二值图像开闭运算等原理实现对图像渗水区域信息的识别与修正,并基于贵州某运营公路隧道衬砌渗漏水实例,经过若干算法程序提取出该隧道渗水病害的位置、面积及病害长度等特征信息,建立了一套隧道衬砌渗漏水病害的数字化识别系统,可为隧道衬砌渗漏水检测提供一种便捷、高效、全面的综合检测手段。

Based on the images acquisited in the water leakage area of tunnel lining,the panoramic developed image of tunnel lining was obtained by using a image generator software in which the procedures of image feature extraction,image matching,model identification,image spread and mosaic processing can be performed.With techniques of image segmentation and processing,the information identification and correction of water leakage area were realized by means of grayscale image conversion,threshold selection and open-close operation of binary image.On the basis of water leakage at lining of an operated road tunnel in Guizhou,the location,area,length of water leakage and so on were deduced by several algorithmic programs,and a digital identification system of water leakage at tunnel lining was established,providing a convenient,efficient and comprehensive testing method for water leakage of tunnel lining.