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