1. 纵向拼接

import cv2
import numpy as np
import pandas as pd

img1 = cv2.imread('E:\\tmp\\xray\\1.png')
img2 = cv2.imread('E:\\tmp\\xray\\1_out.png')

img1 = cv2.resize(img1, (640, 480))
img2 = cv2.resize(img2, (640, 480))

# 核心拼接代码
image = np.vstack((img1, img2))

cv2.imshow("test", image)
cv2.waitKey(0)

2. 水平拼接

import cv2
import numpy as np
import pandas as pd

img1 = cv2.imread('E:\\tmp\\xray\\1.png')
img2 = cv2.imread('E:\\tmp\\xray\\1_out.png')

img1 = cv2.resize(img1, (640, 480))
img2 = cv2.resize(img2, (640, 480))

# 核心代码
image = np.concatenate([img1, img2], axis=1)

cv2.imshow("test", image)
cv2.waitKey(0)