from base64 import b64decode
import base64
import numpy as np
import cv2

def base64_to_np(img_data):
    color_image_flag = 1
    img_data = img_data.split(',',1)[-1]
    return cv2.imdecode(np.fromstring(b64decode(img_data), dtype=np.uint8), color_image_flag)

def get_b64(f):
    return base64.encodebytes(f).decode('utf-8')