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