问如何用Python将图像编码为Base64？

EN

jpg_img = cv2.imencode('.jpg', img)
b64_string = base64.b64encode(jpg_img[1]).decode('utf-8')

import cv2
import base64
img = cv2.imread('test_image.jpg')
jpg_img = cv2.imencode('.jpg', img)
b64_string = base64.b64encode(jpg_img[1]).decode('utf-8')

import cStringIO
import PIL.Image

def encode_img(img_fn):
    with open(img_fn, "rb") as f:
        data = f.read()
        return data.encode("base64")

def decode_img(img_base64):
    decode_str = img_base64.decode("base64")
    file_like = cStringIO.StringIO(decode_str)
    img = PIL.Image.open(file_like)
    # rgb_img[c, r] is the pixel values.
    rgb_img = img.convert("RGB")
    return rgb_img