铝合金焊缝图像的焊接区域提取与缺陷尺寸形状保真

摘要

针对焊缝图像的特点，探讨了焊接缺陷自动识别中焊接区域提取的问题,提出了三角拟合法焊道分割、焊道边界滤波修正等方法。并在此基础上，针对焊接缺陷尺寸与形状修正的问题，定义了缺陷矩形与终矩形的概念，设计了缺陷矩形生成策略、缺陷矩形的分割与生长循环、终矩形内缘提取等方法，在焊道区域提取、缺陷的尺寸与形状的保真方面取得了较好的效果。%In this paper,the weld area extracting in automatic recognition for weld defects had been investigated according to the feature of weld seam image.Based on the above,defects rectangle and end rectangle were defined for shape and size of defects correcting.Defects rectangle forming,cycle of segmentation and growth,defects dege extracting were designed.A satisfactor results were obtained on weld area extracting and a high fidelity of defects was gotten.