Update ocr_engine.py

ocr_engine.py

@@ -1,38 +1,30 @@
-from transformers import TrOCRProcessor, VisionEncoderDecoderModel
 from PIL import Image
+from transformers import AutoProcessor, VisionEncoderDecoderModel
 import re
 
-# Load model + processor
-processor = TrOCRProcessor.from_pretrained("microsoft/trocr-base-stage1")
-model = VisionEncoderDecoderModel.from_pretrained("microsoft/trocr-base-stage1")
+# Load model fine-tuned for 7-segment displays
+processor = AutoProcessor.from_pretrained("roboflow/ocr-7segment")
+model = VisionEncoderDecoderModel.from_pretrained("roboflow/ocr-7segment")
 
 def extract_weight(image: Image.Image) -> str:
     image = image.convert("RGB")
     pixel_values = processor(images=image, return_tensors="pt").pixel_values
-    generated_ids = model.generate(pixel_values, max_length=20)
+    generated_ids = model.generate(pixel_values)
     full_text = processor.batch_decode(generated_ids, skip_special_tokens=True)[0]
 
-    # For debugging (optional):
-    print("OCR Output:", full_text)
+    print("OCR Text:", full_text)  # optional debug
 
     # Extract number (weight)
     match = re.search(r"(\d+(\.\d+)?)", full_text)
-    if match:
-        weight = match.group(1)
-    else:
-        return "No valid weight detected"
+    weight = match.group(1) if match else None
 
-    # Detect unit — smarter match
+    # Detect unit
     text_lower = full_text.lower().replace(" ", "")
-    if any(unit in text_lower for unit in ["kg", "kgs", "kilogram", "kilo", "k.g"]):
+    if any(u in text_lower for u in ["kg", "kgs", "kilogram", "kilo"]):
         unit = "kg"
-    elif any(unit in text_lower for unit in ["g", "gram", "grams"]):
+    elif any(u in text_lower for u in ["g", "gram", "grams"]):
         unit = "grams"
     else:
-        # Smart fallback: use value
-        if float(weight) >= 5:
-            unit = "kg"
-        else:
-            unit = "grams"
+        unit = "kg" if weight and float(weight) >= 5 else "grams"
 
-    return f"{weight} {unit}"
+    return f"{weight} {unit}" if weight else "No valid weight detected"