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Python:base64

Python의 base64 encoding/decoding library.

JPEG/base64 encoding/decoding example 

class ManageRois:
    def __init__(self):
        pass

    @staticmethod
    def encode_to_base64_jpeg(image: np.ndarray) -> str:
        if image is None or image.size == 0:
            return ''
        ret, jpeg = cv2.imencode('.jpg', image)
        if not ret:
            raise JpegEncodeError()
        result = base64.b64encode(jpeg.tobytes()).decode('UTF-8')
        if not result:
            return ''
        return JPEG_BASE64_MIME_PREFIX + result

    @staticmethod
    def decode_from_base64_jpeg(base64_text: str) -> np.ndarray:
        if not base64_text:
            return np.empty(0, dtype=np.uint8)
        if JPEG_BASE64_MIME_PREFIX != base64_text[0:len(JPEG_BASE64_MIME_PREFIX)]:
            return np.empty(0, dtype=np.uint8)
        jpeg = base64.b64decode(base64_text[len(JPEG_BASE64_MIME_PREFIX):].encode("UTF-8"))
        data = np.frombuffer(jpeg, dtype=np.uint8)
        return cv2.imdecode(data, cv2.IMREAD_COLOR)

See also