如何在Python中使用second作为透明的二进制蒙版来合并两幅图像？

import cv2
import numpy as np

image1 = cv2.imread('image1.jpg')
image2 = cv2.imread('image2.jpg')

image1 = cv2.resize(image1, (image2.shape[1], image2.shape[0]))

gray1 = cv2.cvtColor(image1, cv2.COLOR_BGR2GRAY)
gray2 = cv2.cvtColor(image2, cv2.COLOR_BGR2GRAY)

ret, binary1 = cv2.threshold(gray1, 127, 255, cv2.THRESH_BINARY)
ret, binary2 = cv2.threshold(gray2, 127, 255, cv2.THRESH_BINARY)

mask1 = cv2.merge((binary1, binary1, binary1))
mask2 = cv2.merge((binary2, binary2, binary2))

result = cv2.bitwise_and(image1, mask1) + cv2.bitwise_and(image2, mask2)

cv2.imshow('Merged Image', result)
cv2.waitKey(0)
cv2.destroyAllWindows()