• 您可以使用Matplotlib库，但请注意！在python中打开CV库读取BGR格式的图像（如果它们是彩色图像），Matplotlib以RGB格式绘制它们。

import matplotlib.pyplot as plt

numpy_vertical = np.vstack((output2, output3))

# cv2.imshow('Numpy Vertical', numpy_vertical)
# cv2.imshow('Numpy Horizontal', numpy_horizontal)
path = '/path to folder/main_folder'
# cv2.waitKey()
im_rgbVertical = cv2.cvtColor(numpy_vertical, cv2.COLOR_BGR2RGB)
im_rgbHorizontal = cv2.cvtColor(numpy_horizontal, cv2.COLOR_BGR2RGB)

plt.figure(num='your figure name')
plt.subplot('121')
plt.imshow(im_rgbVertical)
plt.title('Vertical')
plt.subplot('122')
plt.imshow(im_rgbHorizontal)
plt.title('Horizontal')
plt.show()