如何将多个图像(子块)写入一个图像

仅对其他读者: 可以简单地使用matplotlib.pyplot.savefig。它以plt.show()显示子块的方式保存子块。

https://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.savefig

结果代码应该如下所示:

import cv2 as cv
from matplotlib import pyplot as plt
image1 = cv.imread('someimage')
image2 = cv.imread('anotherimage')
plt.subplot(1, 2, 1), plt.imshow(image1, 'gray')
plt.subplot(1, 2, 2), plt.imshow(image2, 'gray')
plt.savefig('final_image_name.extension') # To save figure
plt.show() # To show figure

import cv2 as cv
from matplotlib import pyplot as plt
image1 = cv.imread('someimage')
image2 = cv.imread('anotherimage') 
final_frame = cv.hconcat((image1, image2)) # or vconcat for vertical concatenation
cv.imwrite("image.png", final_frame)

你可以用 numpy.concatenate

import numpy as np
import cv2
image1 = cv.imread('someimage')
image2 = cv.imread('anotherimage')
final = np.concatenate((image1, image2), axis = 0)
cv2.imwrite('final.png', final)

axis = 0 垂直连接图像

axis = 1 水平连接图像