差分盒维法在焊缝边缘检测上的应用研究.pdf

26 5 河 北 工 业 科 技 Vol. 26, No . 5 2009 9 H ebei Journal of Industrial Science and Technology Se t. 2009 : 1008-1534( 2009) 05-0300- 03 1 2 , ( 1. 淮海工学院机械工程系, 江苏连云港 222003; 2. 中国矿业大学机电工程学院, 江苏徐州 221008) : 提出了利用 形几何的盒子维数检测焊缝图像边缘的方法, 析并比较了各种计算盒子维 数方法的优缺点, 利用焊缝X 射线图像进行实验, 结果证明差 盒维法( DBC) 检测焊缝边缘效果 较好, 能得到单 一连续的焊缝边缘和其内包含的缺陷边缘 : 形维数; 差 盒维数; 图像处理; 边缘检测 : T G409 : A A lication of differential box-counting in detecting edge of w eld 1 2 LIU M ing-qin , ZHAN G Xiao-guang ( 1. De artment of Mechanical Engineering, H uaihai Institute of Technology, Lianyungang Jiangsu 222003, China; 2. College of Mechatronic Engineering, China University of Mining and T echnology, Xuzhou Jiangsu 221008, China) Abstract :A fractal box dimension met hod w as ro osed to detect edge of w eld,w hich w as com ared w ith other box dimension calculation methods. X rays ictures was used to test the methods. The ex erimental results rove that the different ial box- counting( DBC) is better than other methods. Single, continuous weld edge and inner defects edge w ere got. Key words: fractal dimension; differential box-count ing( DBC) ; image rocessing; edge detection # A , A N r , r A , , A [ 1] lg N r PENT LA ND D r ( 1) 1= N r D = lg( 1/ r )