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A noise elimination procedure for wavelet-based printed circuit board inspection system

机译:基于小波的印刷电路板检查系统的噪声消除程序

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摘要

Image difference operation is fkequently used in automated printed circuit board (PCB) inspection system as well as in many other image processing applications. The previously proposed wavelet-based PCB inspection approach also incorporated the point-to-point image difference operation as part of its algorithm. Unfortunately, during the implementation, this operation brings along the unwanted noise due to misalignment and uneven binarization. Thus, this paper proposes a method to eliminate, if possible, or to reduce as much as possible such noise during the computation of defect detection. The results of applying the proposed method showed a significant improvement during the real-time inspection of printed circuit boards.
机译:图像差异操作经常用于自动印刷电路板(PCB)检查系统以及许多其他图像处理应用程序中。先前提出的基于小波的PCB检测方法也将点对点图像差异运算作为其算法的一部分。不幸的是,在实现过程中,由于未对准和不均匀的二值化,该操作会带来不必要的噪声。因此,本文提出了一种在缺陷检测的计算过程中尽可能消除或减少此类噪声的方法。应用该方法的结果在印刷电路板的实时检查中显示出显着的改进。

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