How to convert Python numpy array to base64 output
I believe since numpy.arrays support the buffer protocol, you just need the following:
processed_string = base64.b64encode(img)So, for example:
>>> encoded = b"aGVsbG8sIHdvcmxk">>> img = np.frombuffer(base64.b64decode(encoded), np.uint8)>>> imgarray([104, 101, 108, 108, 111, 44, 32, 119, 111, 114, 108, 100], dtype=uint8)>>> img.tobytes()b'hello, world'>>> base64.b64encode(img)b'aGVsbG8sIHdvcmxk'>>>
I have the same problem. After some search and try, my final solution is almost the same as yours.
The only difference is that the base64 encoded string is png format data, so I need to change it from RGBA to RGB channels before converted to np.array:
image = image.convert ("RGB")img = np.array(image)In the reverse process, you treate the data as JPEG format, maybe this is the reason why new_image_string is not identical to base64_image_string ?
from http://www.programcreek.com/2013/09/convert-image-to-string-in-python/ :
import base64with open("t.png", "rb") as imageFile: str = base64.b64encode(imageFile.read()) print stris binary read