numpy 保存图片

#!/usr/bin/env python
# coding:utf-8

import numpy as np
from PIL import Image

# im = Image.open('pic/cat.jpg')
# im.show()
# im.save("pic/cat.png") 

def save_pic_np():
    im = Image.open('pic/cat.jpg')
    m = np.array(im)
    # print(m)
    np.save('demo.npy',m)

def read_pic_np():
    arr = np.load('demo.npy')
    img = Image.fromarray(arr)
    img.show()

if __name__ == "__main__":
    # save_pic_np() #保存图片
    read_pic_np()  #读取图片