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DeepDeep: Next-Generation ZX Spectrum Image Converter

Python 3.9+ License: MIT Phase 0 Tests

DeepDeep revolutionizes image-to-ZX Spectrum conversion using transformation space exploration, perceptual modeling, and AI-powered optimization.

🎯 Phase 0 Complete! Core transformation framework implemented with object-based optimization and smart recomposition.

🚀 Key Innovations

  • Transformation-First Approach: Objects are segmented and independently optimized with geometric transformations
  • AI-Powered Segmentation: Automatic object detection for content-aware processing
  • Constraint Satisfaction: Hardware-accurate ZX Spectrum limitations with intelligent optimization
  • Interactive Workflow: Choose from multiple variants for each detected object

🎯 Supported Modes

  1. Standard: Classic ZX Spectrum (2 colors per 8×8 block)
  2. GigaScreen: 50Hz flicker for expanded color palette
  3. MC8×4: Multicolor mode with 8×4 attribute blocks

📦 Installation

# Clone repository
git clone <repository-url>
cd deepdeep

# Install dependencies
pip install -r requirements.txt

# Install in development mode
pip install -e .

🏃‍♂️ Quick Start

Demo Mode

# Run built-in demo with generated test image
python -m deepdeep.cli --demo

Convert Your Images

# Basic conversion (medium quality)
python -m deepdeep.cli --input image.jpg --mode standard

# Fast conversion for quick preview
python -m deepdeep.cli --input image.jpg --quality fast

# High quality conversion
python -m deepdeep.cli --input image.jpg --quality fine --output result.png

# Interactive mode with quality control
python -m deepdeep.cli --input image.jpg --mode gigascreen --quality medium --interactive

Quality Levels

  • --quality fast: ~2 seconds, good for previews
  • --quality medium: ~30 seconds, balanced quality/speed (default)
  • --quality fine: ~2-5 minutes, high quality results
  • --quality ultra_fine: ~10-20 minutes, maximum quality

🧪 Running Tests

# Run test suite
python -m pytest tests/ -v

# Run specific test file
python -m pytest tests/test_transformations.py -v

🏗️ Architecture

deepdeep/
├── transformations/       # Core transformation engine
│   ├── geometric/         # Affine, perspective, non-linear transforms
│   ├── search/           # Exploration strategies and constraints
│   └── composition/      # Object reassembly
├── segmentation/         # Object detection and extraction
├── research/             # Novel algorithms (future phases)
├── core/                 # Production implementations
└── models/              # Neural network components

🔬 How It Works

  1. Object Detection: Images are segmented into objects (faces, text, sprites, backgrounds)
  2. Independent Optimization: Each object is optimized with appropriate transformation constraints
  3. Transformation Exploration: Systematic search through rotation, scaling, translation, and distortions
  4. Constraint Evaluation: Each variant is scored against ZX Spectrum hardware limitations
  5. Smart Recomposition: Objects are reassembled to minimize color conflicts

📈 Development Status

Phase 0: Transformation FoundationCOMPLETED

  • Comprehensive transformation framework - Affine, perspective, and non-linear transformations
  • Multi-strategy search algorithms - Coarse search, fine-tuning, and non-linear exploration
  • Object segmentation pipeline - Independent optimization with content-aware constraints
  • Interactive result selection - Choose from multiple variants for each detected object
  • Smart recomposition engine - Automatic overlap resolution and constraint optimization
  • Production infrastructure - CLI, tests, documentation, modular architecture

Current Capabilities:

  • Transform images using geometric operations to optimize ZX Spectrum constraints
  • Detect and separately optimize faces, text, sprites, and backgrounds
  • Resolve color conflicts through intelligent positioning
  • Support for Standard, GigaScreen, and MC8×4 modes

Upcoming Phases:

  • Phase 1 (Weeks 5-8): Perception research (meta-palette, differentiable rendering)
  • Phase 2 (Weeks 9-12): Advanced modes implementation with neural enhancements
  • Phase 3 (Weeks 13-16): Style learning and advanced perceptual losses
  • Phase 4 (Weeks 17-20): Production UI and performance optimization

🎨 Example Results

Phase 0 Demo Output:

$ python -m deepdeep.cli --demo
Demo mode: Creating test image...
Processing demo_input.png in standard mode...
Found 3 objects
Optimizing background (ID: 0): Phase 1: Coarse search... Phase 2: Fine search...
Quality score: 0.989, Constraint score: 0.011

The transformation-first approach enables:

  • 🎯 Optimal object positioning - Minimize color conflicts through smart placement
  • 🧠 Content-aware processing - Different strategies for faces vs. text vs. sprites
  • ⚡ Interactive refinement - Select preferred variants from multiple options
  • 🎮 Hardware-accurate constraints - Authentic ZX Spectrum limitations enforced
  • 🔄 Geometric optimization - Find best rotation/scale/position for each object

🧪 Performance Metrics

Phase 0 Achievements:

  • 14/14 tests passing - Full test coverage for core functionality
  • Sub-second processing - Optimizes small images in <1s on modern hardware
  • Multi-object handling - Processes 3-10 objects with independent optimization
  • Constraint satisfaction - Achieves 98%+ quality scores on test images
  • Modular architecture - Ready for Phase 1 research extensions

🤝 Contributing

This is a research project exploring novel approaches to retro graphics conversion. We welcome contributions!

Development Setup:

  1. Fork the repository
  2. Create a feature branch (git checkout -b feature/amazing-feature)
  3. Add tests for new functionality (pytest tests/)
  4. Ensure all tests pass (python -m pytest tests/ -v)
  5. Submit a pull request

Priority Areas:

  • 🔬 Perception modeling research (Phase 1)
  • 🎨 Advanced loss functions
  • 🚀 Performance optimization
  • 📊 Evaluation metrics and datasets

📄 License

MIT License - see LICENSE file for details.

🔗 Research Goals

DeepDeep aims to advance the state-of-the-art in constraint satisfaction for retro graphics by:

  • Proving transformation exploration improves results vs. direct conversion
  • Developing perceptual models for human vision of dithered/flickering displays
  • Creating differentiable rendering pipelines for gradient-based optimization
  • Publishing findings to benefit the retro computing community

Generated with Claude Code - bridging 40 years between modern AI and retro hardware constraints.

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