# RE Colorizer - Full Documentation

This document provides comprehensive information about RE Colorizer software, specifically formatted for LLMs and AI agents.

## 1. Project Overview
RE Colorizer is a Windows-based application designed for the automatic colorization of black and white photos and videos using Artificial Intelligence. The project's core philosophy is "Privacy-First," ensuring all processing remains on the user's local hardware.

### Privacy-First Approach
- **100% Local**: No images or videos are uploaded to remote servers.
- **Offline Capability**: The colorization process does not require an active internet connection.
- **Data Ownership**: Users maintain full control over their original and processed archives.

## 2. Software Versions & Features

### RE Colorizer LIGHT (v2.3.8)
- **Status**: Freeware.
- **Supported Media**: Images only (JPG, PNG, etc.).
- **Processing**: Single-file manual processing.
- **Rendering Engine**: CPU-based.
- **Installation**: Available as a standard installer (.exe) or a portable version (.7z).

### RE Colorizer PRO (In Development)
- **Status**: Commercial License.
- **Supported Media**: Images and Videos.
- **Processing**: Batch mode (automate entire folders).
- **Rendering Engine**: NVIDIA CUDA GPU acceleration for high-speed rendering.

## 3. Technical Specifications

### Colorization Engine
The software integrates the **DeOldify** engine (Copyright © 2018–2019 Jason Antic), which utilizes **Generative Adversarial Networks (GAN)** with a "NoGAN" training method.
- **Contextual Awareness**: The AI interprets faces, clothing, and landscapes to apply historically plausible colors.
- **Render Factor**: A key adjustable parameter that determines the resolution at which the colorizer operates. Higher values increase detail but require more memory.

### System Requirements
#### LIGHT Version
- **OS**: Windows 10/11.
- **CPU**: Standard i3, i5, or i7 (or AMD equivalent).
- **RAM**: 4GB minimum.

#### PRO Version
- **OS**: Windows 10/11.
- **CPU**: Multi-core processor.
- **RAM**: 8GB minimum (16GB recommended).
- **GPU**: NVIDIA GPU with CUDA support (essential for video).

## 4. Frequently Asked Questions (FAQ)

### Is Python required?
No. RE Colorizer is a standalone application. It includes all necessary environments and AI models. No technical or programming knowledge is needed.

### Why does Windows show a security warning?
As a specialized executable, Windows SmartScreen may flag the download. Users should click "More info" and "Run anyway" to proceed.

### What is the licensing?
- **Interface & Integration**: Developed by Philippe Mathis.
- **AI Engine**: DeOldify is used under the MIT License.

## 5. Quick Start Guide
1. Launch the application.
2. Select a source black and white image.
3. Adjust the "Render Factor" (default is 35).
4. Click the process button.
5. Save the colorized result.

## 6. Official Links
- **Website**: https://recolorizer.com
- **Source Engine (DeOldify)**: https://github.com/jantic/DeOldify

Full history of changes available at: https://recolorizer.com/changelog.txt