P0502：计算图像中的欧拉数

P0407：将图像分为文字和非文字的两个类别



P0408：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

-P0502: Euler calculated the number of images in the P0407: the text and the image is divided into two categories of non-text P0408: detection of morphological gradient of the edge binary image P0409: morphological example- images from the PCB to remove all current lines, retaining only the target chip