Python 17.OpenCV 图像金字塔，图像融合

import cv2
import numpy as np

A = cv2.imread('test1.png')
B = cv2.imread('test2.png')

G = A.copy()
gpA = [G]
for i in range(6):
    G = cv2.pyrDown(G)
    gpA.append(G)

G = B.copy()
gpB = [G]
for i in range(6):
    G = cv2.pyrDown(G)
    gpB.append(G)

lpA = [gpA[5]]
for i in range(5, 0, -1):
    GE = cv2.pyrUp(gpA[i])
    L = cv2.subtract(gpA[i-1], GE)
    lpA.append(L)


lpB = [gpB[5]]
for i in range(5, 0, -1):
    GE = cv2.pyrUp(gpB[i])
    L = cv2.subtract(gpB[i-1], GE)
    lpB.append(L)

LS = []
for la, lb in zip(lpA, lpB):
    rows, cols = la.shape[:2]
    ls = np.hstack((la[:, 0:256], lb[:, 256:]))
    LS.append(ls)

ls_ = LS[0]
for i in range(1, 6):
    ls_ = cv2.pyrUp(ls_)
    ls_ = cv2.add(ls_, LS[i])

real = np.hstack((A[:, :256], B[:, 256:]))

cv2.imshow('ls_', ls_)
cv2.imshow('real', real)

cv2.waitKey()
cv2.destroyAllWindows()

素材不太好融合的不好