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author | Gustaf Rydholm <gustaf.rydholm@gmail.com> | 2022-02-06 22:46:01 +0100 |
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committer | Gustaf Rydholm <gustaf.rydholm@gmail.com> | 2022-02-06 22:46:01 +0100 |
commit | 8103ab92b9d8f1898164ded197d7ec60671e2aca (patch) | |
tree | ade6d8b833ca77c3ae1b795b5abbd7e1350fcfa1 /text_recognizer/image_utils.py | |
parent | 2d4e527fc0d47db8ed995180cbcec01271e20245 (diff) |
fix: refactor and move image utils
Diffstat (limited to 'text_recognizer/image_utils.py')
-rw-r--r-- | text_recognizer/image_utils.py | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/text_recognizer/image_utils.py b/text_recognizer/image_utils.py new file mode 100644 index 0000000..0faed79 --- /dev/null +++ b/text_recognizer/image_utils.py @@ -0,0 +1,34 @@ +"""Image util functions for loading and saving images.""" +import base64 +from io import BytesIO +from pathlib import Path +from typing import Any, Union + +from PIL import Image +import smart_open + + +def read_image_pil(image_uri: Union[Path, str], grayscale: bool = False) -> Image: + """Read image from uri.""" + with smart_open(image_uri, "rb") as image_file: + return read_image_pil_file(image_file, grayscale) + + +def read_image_pil_file(image_file: Any, grayscale: bool = False) -> Image: + """Return PIL image.""" + with Image.open(image_file) as image: + if grayscale: + image = image.convert("L") + else: + image = image.convert(mode=image.mode) + return image + + +def read_b64_image(b64_str: str, grayscale: bool = False) -> Image: + """Load base64-encoded images.""" + try: + _, b64_data = b64_str.split(",") + image_file = BytesIO(base64.b64decode(b64_data)) + return read_image_pil_file(image_file, grayscale) + except Exception as e: + raise ValueError(f"Could not load image from b64 {b64_str}: {e}") |