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发明公开
CN106770318A 基于改进的背景差分法的焊缝缺陷实时检测方法 无效 - 撤回

  • 专利标题： 基于改进的背景差分法的焊缝缺陷实时检测方法
  • 专利标题（英）： Real-time weld defect detection method based on improved background difference method
  • 申请号： CN201611114036.8
    申请日： 2016-12-07
  • 公开(公告)号： CN106770318A
    公开(公告)日： 2017-05-31
  • 发明人: 孙俊 , 李超 , 吴小俊 , 方伟 , 毛力 , 范鹏飞 , 陈祺东 , 游琪
  • 申请人： 江南大学
  • 申请人地址： 江苏省无锡市滨湖区蠡湖大道1800号
  • 专利权人： 江南大学
  • 当前专利权人： 江南大学
  • 当前专利权人地址： 江苏省无锡市滨湖区蠡湖大道1800号
  • 主分类号： G01N21/88
  • IPC分类号： G01N21/88
基于改进的背景差分法的焊缝缺陷实时检测方法
摘要：
本发明公开了一种基于改进的背景差分法的焊缝缺陷实时检测方法，特征是包含如下的步骤：步骤一：提取焊缝图像的核心区域，尽可能排除会影响缺陷检测结果的因素；步骤二：采用改进的背景差分法构建背景模型；步骤三：将每个样本的核心区域依次与背景模型作差分，提取焊缝缺陷区域，根据缺陷区域总面积判断焊缝样本是否存在缺陷；步骤四，根据一定的规则更新背景模型，保证背景模型能适应当前的检测环境。本发明具有良好的自动化性能，较高的实时性等优点，能够以较高的准确率识别出缺陷焊缝，提升了焊缝生产的效率和质量。
摘要（英）：

The invention discloses a real-time weld defect detection method based on an improved background difference method, which is characterized by including the following steps: (Step 1) a core region of a weld image is extracted, and factors which can affect a defect detection result are removed as many as possible; (Step 2) the improved background difference method is adopted to construct a background model; (Step 3) a difference between the core region of each sample and the background model is made in sequence, weld defect regions are extracted, and whether defects exist in weld samples is judged according to the total area of the defect regions; (Step 4) the background model is updated according to a certain rule to ensure that the background model can be adapted to a current detection environment. The real-time weld defect detection method has the advantages of good automation performance, high real-time performance and the like, can identify defective welds with high accuracy, and increases the efficiency and quality of weld production.

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