import cv2
import numpy as np

height =160
width = 280
image = np.zeros((height, width),np.uint8)
cv2.imshow('image',image)
cv2.waitKeyEx(0)
cv2.destroyAllWindows()

二维数组代表一幅灰度图像。

 

import cv2
import numpy as np

height = 160
width = 280
image = np.zeros((height,width), np.uint8)
for y in range(0,height,20):
    image[y:y+10,:] = 255
cv2.imshow('image', image)

cv2.waitKey(0)
cv2.destroyAllWindows()

import cv2
import  numpy as np

height = 160
width = 280
image = np.random.randint(256,size=[height,width],dtype=np.uint8)
cv2.imshow('image', image)
cv2.waitKey(0)
cv2.destroyAllWindows()

随机数建立灰度图像。

import cv2
import numpy as np

height = 160
width = 280
image = np.random.randint(256,size=[height,width,3],dtype=np.uint8)
cv2.imshow('image',image)
cv2.waitKey(0)
cv2.destroyAllWindows()

建立彩色的随机数图像。