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-rw-r--r--text_recognizer/data/utils/image_utils.py34
1 files changed, 34 insertions, 0 deletions
diff --git a/text_recognizer/data/utils/image_utils.py b/text_recognizer/data/utils/image_utils.py
new file mode 100644
index 0000000..d374fc3
--- /dev/null
+++ b/text_recognizer/data/utils/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.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}")