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from transformers import TrOCRProcessor, VisionEncoderDecoderModel
from PIL import Image
# Load model + processor once
processor = TrOCRProcessor.from_pretrained("microsoft/trocr-base-stage1")
model = VisionEncoderDecoderModel.from_pretrained("microsoft/trocr-base-stage1")
def extract_weight(image: Image.Image) -> str:
# Convert image to RGB just in case
image = image.convert("RGB")
# Preprocess + generate prediction
pixel_values = processor(images=image, return_tensors="pt").pixel_values
generated_ids = model.generate(pixel_values)
# Decode output
text = processor.batch_decode(generated_ids, skip_special_tokens=True)[0]
# Keep only numbers + decimal
weight = ''.join(filter(lambda x: x in '0123456789.', text))
return weight.strip() if weight else "No valid weight detected"
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