Move utils

2 files changed, 34 insertions, 0 deletions

diff --git a/text_recognizer/util/__init__.py b/text_recognizer/util/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/text_recognizer/util/__init__.py
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}")