import cv2 as cv import numpy as np img=cv.imread('learn.jpg',cv.IMREAD_GRAYSCALE) cv.imshow('first image',img)img_size=img.shapeprint(img_size) imgkernel=np.array([[-2,-1,0], [-1, 1,1], [ 0, 1,2]] ) print(imgkernel)#利用CV的卷积核卷积图像 dst=cv.filter2D(img,