如何使用python比较图像并将其合并为一个图像

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)

diff = cv2.absdiff(gray1, gray2)

_, threshold = cv2.threshold(diff, 30, 255, cv2.THRESH_BINARY)

kernel = np.ones((3, 3), np.uint8)
threshold = cv2.erode(threshold, kernel, iterations=1)
threshold = cv2.dilate(threshold, kernel, iterations=1)

contours, _ = cv2.findContours(threshold, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
cv2.drawContours(image1, contours, -1, (0, 255, 0), 2)

merged_image = cv2.hconcat([image1, image2])

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