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"""
Singtel Bill Scanner - Production Ready Example
This script shows how to extract key information from Singtel bills
"""
import re
from datetime import datetime
from transformers import pipeline
from PIL import Image
import json
class SingtelBillScanner:
def __init__(self):
"""Initialize the bill scanner with TrOCR model"""
print("Initializing Singtel Bill Scanner...")
self.ocr_pipeline = pipeline("image-to-text", model="microsoft/trocr-base-handwritten")
print("Scanner ready!")
def extract_text(self, image_path):
"""Extract text from bill image"""
try:
image = Image.open(image_path)
result = self.ocr_pipeline(image)
return result[0]['generated_text']
except Exception as e:
print(f"Error extracting text: {e}")
return None
def parse_bill_amount(self, text):
"""Extract bill amount from text"""
# Look for patterns like "$123.45", "S$123.45", "Total: $123.45"
amount_patterns = [
r'Total[:\s]*\$?([0-9,]+\.?[0-9]*)',
r'Amount Due[:\s]*\$?([0-9,]+\.?[0-9]*)',
r'S\$([0-9,]+\.?[0-9]*)',
r'\$([0-9,]+\.?[0-9]*)',
]
for pattern in amount_patterns:
match = re.search(pattern, text, re.IGNORECASE)
if match:
amount_str = match.group(1).replace(',', '')
try:
return float(amount_str)
except ValueError:
continue
return None
def parse_due_date(self, text):
"""Extract due date from text"""
# Look for date patterns
date_patterns = [
r'Due[:\s]*(\d{1,2}[/-]\d{1,2}[/-]\d{2,4})',
r'Due Date[:\s]*(\d{1,2}[/-]\d{1,2}[/-]\d{2,4})',
r'(\d{1,2}[/-]\d{1,2}[/-]\d{2,4})',
]
for pattern in date_patterns:
match = re.search(pattern, text, re.IGNORECASE)
if match:
date_str = match.group(1)
# Try to parse the date
for fmt in ['%d/%m/%Y', '%d-%m-%Y', '%d/%m/%y', '%d-%m-%y']:
try:
return datetime.strptime(date_str, fmt).strftime('%Y-%m-%d')
except ValueError:
continue
return None
def parse_account_number(self, text):
"""Extract account number from text"""
# Look for account number patterns
account_patterns = [
r'Account[:\s]*([0-9A-Z-]+)',
r'A/C[:\s]*([0-9A-Z-]+)',
r'Account No[:\s]*([0-9A-Z-]+)',
]
for pattern in account_patterns:
match = re.search(pattern, text, re.IGNORECASE)
if match:
return match.group(1).strip()
return None
def parse_bill_period(self, text):
"""Extract billing period from text"""
# Look for billing period
period_pattern = r'Bill Period[:\s]*(\d{1,2}[/-]\d{1,2}[/-]\d{2,4})\s*to\s*(\d{1,2}[/-]\d{1,2}[/-]\d{2,4})'
match = re.search(period_pattern, text, re.IGNORECASE)
if match:
return {
'start': match.group(1),
'end': match.group(2)
}
return None
def extract_services(self, text):
"""Extract service charges from text"""
services = []
# Common Singtel services
service_patterns = [
r'Mobile[:\s]*\$?([0-9,]+\.?[0-9]*)',
r'Broadband[:\s]*\$?([0-9,]+\.?[0-9]*)',
r'Data[:\s]*\$?([0-9,]+\.?[0-9]*)',
r'Voice[:\s]*\$?([0-9,]+\.?[0-9]*)',
r'SMS[:\s]*\$?([0-9,]+\.?[0-9]*)',
]
for pattern in service_patterns:
match = re.search(pattern, text, re.IGNORECASE)
if match:
service_name = pattern.split('[')[0]
amount = float(match.group(1).replace(',', ''))
services.append({
'service': service_name,
'amount': amount
})
return services
def process_bill(self, image_path):
"""Complete bill processing pipeline"""
print(f"Processing bill: {image_path}")
# Extract text
raw_text = self.extract_text(image_path)
if not raw_text:
return None
# Parse bill information
bill_data = {
'raw_text': raw_text,
'total_amount': self.parse_bill_amount(raw_text),
'due_date': self.parse_due_date(raw_text),
'account_number': self.parse_account_number(raw_text),
'bill_period': self.parse_bill_period(raw_text),
'services': self.extract_services(raw_text),
'processed_at': datetime.now().isoformat()
}
return bill_data
def save_results(self, bill_data, output_file):
"""Save processed bill data to JSON"""
with open(output_file, 'w') as f:
json.dump(bill_data, f, indent=2)
print(f"Results saved to: {output_file}")
# Example usage
def main():
# Initialize scanner
scanner = SingtelBillScanner()
# Process a bill image
image_path = "your_singtel_bill.jpg" # Replace with your image path
if input("Do you have a bill image to process? (y/n): ").lower() == 'y':
image_path = input("Enter the path to your bill image: ")
try:
result = scanner.process_bill(image_path)
if result:
print("\n=== Bill Processing Results ===")
print(f"Total Amount: ${result.get('total_amount', 'Not found')}")
print(f"Due Date: {result.get('due_date', 'Not found')}")
print(f"Account Number: {result.get('account_number', 'Not found')}")
print(f"Services: {len(result.get('services', []))} found")
# Save results
output_file = f"bill_result_{datetime.now().strftime('%Y%m%d_%H%M%S')}.json"
scanner.save_results(result, output_file)
else:
print("Failed to process bill image")
except FileNotFoundError:
print(f"Image file not found: {image_path}")
except Exception as e:
print(f"Error processing bill: {e}")
else:
print("\nTo use this scanner:")
print("1. Take a clear photo of your Singtel bill")
print("2. Save it as a JPG or PNG file")
print("3. Run this script and provide the file path")
print("4. The scanner will extract key information automatically")
if __name__ == "__main__":
main()
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