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地铁隧道变形监测的数字图像处理技术研究
引用本文:周奇才,孙月腾,陈海燕,熊肖磊,何自强.地铁隧道变形监测的数字图像处理技术研究[J].中国工程机械学报,2009,7(4).
作者姓名:周奇才  孙月腾  陈海燕  熊肖磊  何自强
作者单位:1. 同济大学,机械工程学院,上海,201804
2. 上海申通地铁集团有限公司,上海,200000
摘    要:提出利用数字图像处理技术对地铁隧道变形进行监测的方案.通过对隧道内定点放置的目标光源进行拍摄,得到所拍摄的图像,并对图像进行平滑、锐化、腐蚀、膨胀、去噪等预处理,获取目标光源清晰轮廓,然后对图像进行二值化,边界提取,进而通过最小二乘法,拟合圆心,计算出目标光源圆心的位置变化,从而得出地铁隧道纵向的变形量.实验结果表明,该方法在地铁隧道变形检测系统中得到的隧道变形量比较精确、可靠.

关 键 词:图像处理  二值化  腐蚀  最小二乘法  拟合圆心

Digital image processing technologies for deformation monitoring on subway tunnels
ZHOU Qi-cai,SUN Yue-teng,CHEN Hai-yan,XIONG Xiao-lei,HE Zi-qiang.Digital image processing technologies for deformation monitoring on subway tunnels[J].Chinese Journal of Construction Machinery,2009,7(4).
Authors:ZHOU Qi-cai  SUN Yue-teng  CHEN Hai-yan  XIONG Xiao-lei  HE Zi-qiang
Affiliation:1.College of Mechanical Engineering; Tongji Univeresity; Shanghai 201804; China; 2.Shanghai Shentong Metro Co.; Ltd.; Shanghai 200000; China);
Abstract:The solutions on subway deformation monitoring are proposed based on image processing technologies.By taking photos for positioned targets of light sources inside the tunnel,the images are accordingly obtained for such pre-processing as smoothing,sharpening,erosion,dilation and de-noising to capture the clear-cut contours of targeted light sources.Afterwards,the images are processed using the binarization and boundary extraction.Further studied,the circle-center position changes of targeted light source are...
Keywords:image processing  binarization  erosion  least square method  circle-center fitting
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