From 49069253b8eba643aecbc1972879be9517801272 Mon Sep 17 00:00:00 2001 From: Gustaf Rydholm Date: Tue, 27 Sep 2022 23:19:10 +0200 Subject: Move utils --- text_recognizer/util/__init__.py | 0 text_recognizer/util/image_utils.py | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 34 insertions(+) create mode 100644 text_recognizer/util/__init__.py create mode 100644 text_recognizer/util/image_utils.py (limited to 'text_recognizer/util') diff --git a/text_recognizer/util/__init__.py b/text_recognizer/util/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/text_recognizer/util/image_utils.py b/text_recognizer/util/image_utils.py new file mode 100644 index 0000000..fcb094c --- /dev/null +++ b/text_recognizer/util/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 + +import smart_open +from PIL import Image + + +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: str, 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}") -- cgit v1.2.3-70-g09d2