Advanced Navigation Assistance System (ANAS)

Advanced Navigation Assistance System (ANAS)

Welcome to the official documentation for ANAS - an AI-powered navigation assistance system designed to help visually impaired users navigate safely through real-world environments.

🚀 Quick Start

Get started with ANAS in minutes:

  1. Installation Guide
  2. Basic Usage
  3. Hardware Setup

📚 Documentation

User Guides

Developer Resources

Research & Testing

🎯 Key Features

  • Real-time Obstacle Detection: YOLOv8-powered object recognition
  • Surface Hazard Identification: 67-class texture classification
  • Multi-modal Feedback: Audio speech + haptic vibration
  • Cross-platform Support: Windows, Linux, macOS, Raspberry Pi
  • Lighting Robustness: Tested across 8 illumination conditions

📊 System Architecture

┌─────────────────────────────────────────────────────┐
│         User Feedback Layer                          │
│   (Audio via TTS + Haptic Vibration)                │
│   [hardware_interface.py]                           │
├─────────────────────────────────────────────────────┤
│         Decision & Fusion Layer                      │
│   ├─ Proximity Tracking [proximity_tracker.py]      │
│   ├─ Surface Hazard Mapping                         │
│   ├─ Severity Assessment                            │
│   └─ Alert Filtering                                │
├─────────────────────────────────────────────────────┤
│         Detection Layer                              │
│   ├─ Obstacle Detection [YOLO v8n]                  │
│   ├─ Surface Classification [ResNet50 - 67 classes] │
│   ├─ Direction Classification                       │
│   └─ Distance Estimation                            │
├─────────────────────────────────────────────────────┤
│         Input Layer                                  │
│   ├─ Camera Capture [OpenCV]                        │
│   ├─ Frame Preprocessing                            │
│   ├─ Lighting Adaptation                            │
│   └─ Performance Optimization                       │
└─────────────────────────────────────────────────────┘

📈 Performance Metrics

Metric Target Current Status
Obstacle Detection Rate ≥95% ✅ Achieved
False Positive Rate ≤3% ✅ Achieved
Detection Latency <200ms ✅ Achieved
Surface Classification 67 classes 🔄 Training (57.65% acc)

🔬 Research Impact

ANAS represents a significant advancement in assistive navigation technology:

  • Accessibility: Enhances independence for visually impaired users
  • AI Integration: Combines computer vision with haptic feedback
  • Real-world Testing: Comprehensive field testing protocols
  • Open Source: Freely available for research and development

📞 Contact & Support

This system is designed to assist visually impaired users but should not replace human judgment or professional mobility training.