python opencv3 图像与原始字节转换

git： https://github.com/linyi0604/Computer-Vision

 # coding:utf8
 import cv2
 import numpy
 import os

 """
 随机字节的bytearray转为灰度图像和BGR图像
 """
 randomByteArray = bytearray(os.urandom(120000))
 flatNumpyArray = numpy.array(randomByteArray)
 # 转换成400*300的灰度图像
 grayImage = flatNumpyArray.reshape(400, 300)
 cv2.imwrite("randomGray.png", grayImage)

 """
 随机字节的bytearray转为400*100的彩色图像
 """
 bgrImage = flatNumpyArray.reshape(400, 100, 3)
 cv2.imwrite("randomColor.png", bgrImage)