Sanjayraju30 commited on
Commit
fd59642
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1 Parent(s): 0e76d8f

Update ocr_engine.py

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Files changed (1) hide show
  1. ocr_engine.py +21 -15
ocr_engine.py CHANGED
@@ -3,20 +3,14 @@ from PIL import Image, ImageFilter
3
  import torch
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  import re
5
 
 
6
  processor = TrOCRProcessor.from_pretrained("microsoft/trocr-base-handwritten")
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  model = VisionEncoderDecoderModel.from_pretrained("microsoft/trocr-base-handwritten")
8
 
9
  def clean_ocr_text(text):
 
10
  text = text.replace(",", ".").replace("s", "5").replace("o", "0").replace("O", "0")
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- return re.sub(r"[^\d.kg]", "", text.lower())
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-
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- def extract_unit_from_text(raw_text):
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- raw = raw_text.lower()
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- if "kg" in raw:
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- return "kg"
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- elif "g" in raw:
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- return "g"
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- return "g" # default fallback
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21
  def restore_decimal(text):
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  if re.fullmatch(r"\d{5}", text):
@@ -25,26 +19,38 @@ def restore_decimal(text):
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  return f"{text[:2]}.{text[2:]}"
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  return text
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  def extract_weight(image):
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  try:
 
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  image = image.resize((image.width * 2, image.height * 2), Image.BICUBIC)
31
  image = image.filter(ImageFilter.SHARPEN)
32
 
 
33
  pixel_values = processor(images=image, return_tensors="pt").pixel_values
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  generated_ids = model.generate(pixel_values)
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  raw_text = processor.batch_decode(generated_ids, skip_special_tokens=True)[0].strip()
36
 
37
  cleaned = clean_ocr_text(raw_text)
38
 
 
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  match = re.search(r"(\d{1,3}\.\d{1,3})\s*(kg|g)?", cleaned)
40
  if match:
41
- return f"{match.group(1)} {match.group(2) or ''}", raw_text
42
 
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- fallback = re.search(r"\d{4,5}", cleaned)
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- if fallback:
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- fixed = restore_decimal(fallback.group())
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- return f"{fixed}", raw_text
 
47
 
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- return f"No valid weight found | OCR: {cleaned}", raw_text
49
  except Exception as e:
50
  return f"Error: {str(e)}", ""
 
3
  import torch
4
  import re
5
 
6
+ # Load TrOCR model and processor
7
  processor = TrOCRProcessor.from_pretrained("microsoft/trocr-base-handwritten")
8
  model = VisionEncoderDecoderModel.from_pretrained("microsoft/trocr-base-handwritten")
9
 
10
  def clean_ocr_text(text):
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+ # Fix common OCR misreads
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  text = text.replace(",", ".").replace("s", "5").replace("o", "0").replace("O", "0")
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+ return re.sub(r"[^\d.kg]", "", text.lower()) # keep digits, dot, k, g
 
 
 
 
 
 
 
 
14
 
15
  def restore_decimal(text):
16
  if re.fullmatch(r"\d{5}", text):
 
19
  return f"{text[:2]}.{text[2:]}"
20
  return text
21
 
22
+ def extract_unit_from_text(raw_text):
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+ raw_text = raw_text.lower()
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+ if "kg" in raw_text:
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+ return "kg"
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+ elif "g" in raw_text:
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+ return "g"
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+ return "g" # fallback if unit not found
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+
30
  def extract_weight(image):
31
  try:
32
+ # Enhance image
33
  image = image.resize((image.width * 2, image.height * 2), Image.BICUBIC)
34
  image = image.filter(ImageFilter.SHARPEN)
35
 
36
+ # OCR inference
37
  pixel_values = processor(images=image, return_tensors="pt").pixel_values
38
  generated_ids = model.generate(pixel_values)
39
  raw_text = processor.batch_decode(generated_ids, skip_special_tokens=True)[0].strip()
40
 
41
  cleaned = clean_ocr_text(raw_text)
42
 
43
+ # Try direct match (e.g., 52.25 kg or 250.5g)
44
  match = re.search(r"(\d{1,3}\.\d{1,3})\s*(kg|g)?", cleaned)
45
  if match:
46
+ return f"{match.group(1)} {match.group(2) or ''}".strip(), raw_text
47
 
48
+ # Fallback if no decimal found: convert big number like 53255 to 52.255
49
+ fallback_match = re.search(r"\d{4,5}", cleaned)
50
+ if fallback_match:
51
+ decimal_fixed = restore_decimal(fallback_match.group())
52
+ return decimal_fixed, raw_text
53
 
54
+ return "Error: No valid weight found", raw_text
55
  except Exception as e:
56
  return f"Error: {str(e)}", ""