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，形态学实例——从PCB图像中删除所有电流线（仅保留芯片对象），计算图像中的欧拉数

-Of the matrix quadtree decomposition, the image is divided into text and non-text of two categories, the morphological gradient detection of the edge binary image, morphology example- images from the PCB to remove all current line (only to retain the chip object) calculated image Euler Number