opencv拉普拉斯金字塔

import cv2
import numpy as np

img = cv2.imread('./lena.png')
#拉普拉斯是先缩小再放大

dst = cv2.pyrDown(img)

dst = cv2.pyrUp(dst)
#原图和高斯金字塔的差就是拉普拉斯金字塔
lap0 = img - dst
cv2.imshow('lap0', lap0)
cv2.imshow('img', img)
cv2.waitKey(0)
cv2.destroyAllWindows()