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.
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...
出处
《中国工程机械学报》
2009年第4期463-468,共6页
Chinese Journal of Construction Machinery
关键词
图像处理
二值化
腐蚀
最小二乘法
拟合圆心
image processing
binarization
erosion
least square method
circle-center fitting
