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Invoice Analyzer

This project is an AI-powered invoice analysis tool that extracts and structures data from uploaded invoices using OCR, transformer models, and LLM processing.

Features

  • Upload invoice images
  • Extract text and tables using EasyOCR
  • Pass extracted data to GPT-4 to structure invoice data
  • Process invoice data with the Donut transformer
  • Compare the results of the Donut transformer with the LLM output for higher accuracy
  • Display results in a user-friendly Streamlit interface
  • Generate downloadable Excel reports

Components

app.py

The main Streamlit application that handles:

  • User interface
  • File uploads
  • API requests to the backend
  • Result display and visualization

llm.py

Manages the interaction with the OpenAI GPT-4 model:

  • Structures the extracted invoice data
  • Defines the function call for invoice data extraction

excel_creation.py

Handles the creation of Excel reports:

  • Converts structured invoice data into Excel format
  • Creates separate sheets for invoice details and line items