python opencv3 图像与原始字节转换

 1 # coding:utf8
 2 import cv2
 3 import numpy
 4 import os
 5 
 6 
 7 """
 8 随机字节的bytearray转为灰度图像和BGR图像
 9 """
10 randomByteArray = bytearray(os.urandom(120000))
11 flatNumpyArray = numpy.array(randomByteArray)
12 # 转换成400*300的灰度图像
13 grayImage = flatNumpyArray.reshape(400, 300)
14 cv2.imwrite("randomGray.png", grayImage)
15 
16 """
17 随机字节的bytearray转为400*100的彩色图像
18 """
19 bgrImage = flatNumpyArray.reshape(400, 100, 3)
20 cv2.imwrite("randomColor.png", bgrImage)