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76 lines
1.6 KiB
76 lines
1.6 KiB
2 years ago
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import PIL
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import cv2
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import base64
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import numpy as np
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from PIL.Image import Image as ImageFile
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from PIL.JpegImagePlugin import JpegImageFile
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from PIL.PngImagePlugin import PngImageFile
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from PIL import Image
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from io import BytesIO
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def _encode_numpy_array_image(image):
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image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
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if image.shape[-1] == 3:
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_, buffer = cv2.imencode(".jpg", image)
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elif image.shape[-1] == 4:
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_, buffer = cv2.imencode(".png", image)
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image_as_text = base64.b64encode(buffer)
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return image_as_text
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def _encode_pil_image(image):
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opencv_image = np.array(image)
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image_as_text = _encode_numpy_array_image(image=opencv_image)
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return image_as_text
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def _encode_image_file(image):
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pil_image = Image.open(image)
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return _encode_pil_image(pil_image)
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def encode(image):
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if (
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type(image) == np.ndarray
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or type(image) == str
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or isinstance(
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image,
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(
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JpegImageFile,
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PngImageFile,
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ImageFile,
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),
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)
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):
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if type(image) == np.ndarray:
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image_as_text = _encode_numpy_array_image(image)
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elif type(image) == str:
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image_as_text = _encode_image_file(image)
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else:
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image_as_text = _encode_pil_image(image)
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return image_as_text.decode("ascii")
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else:
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raise Exception(
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"expected numpy.array, PIL.Image or str, not: ", str(type(image))
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)
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def decode(jpg_as_text):
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if jpg_as_text is None:
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return None
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pil_image = Image.open(BytesIO(base64.b64decode(jpg_as_text)))
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return pil_image
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