python中图片转为base64编码

来至作者：http://huchaowei.com/2017/08/25/Python%E4%B8%AD%E4%BC%A0%E7%BB%9F%E5%9B%BE%E7%89%87%E6%A0%BC%E5%BC%8F%E4%B8%8Ebase64%E8%BD%AC%E6%8D%A2/==

Python中将图片转base64

# import base64
with open("/home/chaowei/1.png", "rb") as fs:
    # b64encode：编码，b64decode: 解码
    base64_data = base64.b64encode(f.read())
    # base64.b64decode(base64_data)
    print(base64_data)

Python中将base64转为opencv的Mat格式

import cv2
import base64
imgData = base64.b64decode(base64_data)
nparr = np.fromstring(imgData, np.uint8)
img_np = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
#cv2.imshow("test",img_np)
#cv2.waitKey(0)