用水线阈值法分割图像

对矩阵进行四叉树分解

将图像分为文字和非文字的两个类别

形态学梯度检测二值图像的边缘

P0409：形态学实例——从PCB图像中删除所有电流线，仅保留芯片对象

-Water line image thresholding segmentation of matrix quadtree decomposition of the image into text and non-text for these two types of morphological gradient detected binary image of the edge of P0409: morphological examples- from PCB image delete all current line , retaining only the target chip