1 左右拼接(height要求一样)

import cv2
from google.colab.patches import cv2_imshow

img_left = cv2.imread("./left.jpg")
img_right = cv2.imread("./right.jpg")

img = cv2.hconcat([img_left, img_right])
cv2.imwrite("merge.jpg", img)

2 垂直拼接(width要求一样）

import cv2
from google.colab.patches import cv2_imshow

img_left = cv2.imread("./top.jpg")
img_right = cv2.imread("./bottom.jpg")

img = cv2.vconcat([img_left, img_right])
cv2.imwrite("merge.jpg", img)

3 按像素切分，左右

sp = img.shape
sp_height = sp[0]
sp_width = sp[1]

# 左右居中切分
sp = sp[1] / 2


img_left_new = img[0:sp_height,0:sp]
cv2.imwrite("left_new.jpg", img_left_new)

img_right_new = img[0:sp_height,sp:sp_width]
cv2.imwrite("right_new.jpg", img_right_new)