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# import the necessary packages
import numpy as np
import base64
import json
import sys
def base64_encode_image(a):
# return a JSON-encoded list of the base64 encoded image, image data
# type, and image shape
#return json.dumps([base64_encode_array(a), str(a.dtype), a.shape])
return json.dumps([base64_encode_array(a).decode("utf-8"), str(a.dtype),
a.shape])
def base64_decode_image(a):
# grab the array, data type, and shape from the JSON-decoded object
(a, dtype, shape) = json.loads(a)
# if this is Python 3, then we need the extra step of encoding the
# string as byte object
if sys.version_info.major == 3:
a = bytes(a, encoding="utf-8")
# set the correct data type and reshape the matrix into an image
a = base64_decode_array(a, dtype).reshape(shape)
# return the loaded image
return a
def base64_encode_array(a):
# return the base64 encoded array
return base64.b64encode(a)
def base64_decode_array(a, dtype):
# decode and return the array
return np.frombuffer(base64.decodestring(a), dtype=dtype)
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