# Advanced Features Documentation

<!--
Project Information:
- Project ID: 22
- Title: Face Recognition Dataset
- Category: Image Data
- Technologies: PNG, JPG, NumPy, OpenCV, Face Recognition

Contact Information:
RSK World
Founder: Molla Samser
Designer & Tester: Rima Khatun
Email: help@rskworld.in
Phone: +91 93305 39277
Address: Nutanhat, Mongolkote, Purba Burdwan, West Bengal, India, 713147
Website: https://rskworld.in/
Year: 2026
-->

## Complete Feature List

### 1. Core Face Recognition

**Basic Recognition:**
- Load and organize face images
- Extract face encodings (128-dimensional vectors)
- Train recognition models
- Recognize faces in images
- Real-time webcam recognition

**Usage:**
```python
from scripts.recognize_faces import FaceRecognizer

recognizer = FaceRecognizer()
recognizer.train('data/train', save_model=True)
results = recognizer.recognize('image.jpg')
```

### 2. Face Verification (1:1 Matching)

**Features:**
- Compare two face images
- Calculate similarity distance
- Confidence scoring
- Threshold-based matching

**Usage:**
```python
from scripts.advanced_features import FaceVerifier

verifier = FaceVerifier()
result = verifier.verify_images('image1.jpg', 'image2.jpg')
print(f"Match: {result['is_match']}, Confidence: {result['confidence']:.2%}")
```

### 3. Face Clustering

**Features:**
- Group similar faces automatically
- DBSCAN clustering algorithm
- Noise detection
- Silhouette score calculation

**Usage:**
```python
from scripts.advanced_features import FaceClustering
from scripts.preprocess import get_face_encoding

clusterer = FaceClustering(eps=0.6, min_samples=2)
encodings = [get_face_encoding(img) for img in images]
result = clusterer.cluster(encodings)
```

### 4. Quality Assessment

**Features:**
- Blur detection (Laplacian variance)
- Brightness assessment
- Face size evaluation
- Overall quality scoring

**Usage:**
```python
from scripts.advanced_features import FaceQualityAssessment

assessor = FaceQualityAssessment()
quality = assessor.assess(image, face_location)
print(f"Quality: {quality['overall_score']:.2f}")
```

### 5. Face Alignment

**Features:**
- Automatic face alignment using landmarks
- Eye-based rotation correction
- Improved recognition accuracy

**Usage:**
```python
from scripts.advanced_features import FaceAlignment

aligned = FaceAlignment.get_aligned_face(image)
```

### 6. Data Augmentation

**Features:**
- Rotation (various angles)
- Horizontal flipping
- Brightness adjustment
- Contrast adjustment
- Gaussian noise
- Blur effects
- Crop and resize

**Usage:**
```python
from scripts.data_augmentation import FaceAugmenter

augmenter = FaceAugmenter()
augmented = augmenter.augment_image(image, ['rotate', 'flip', 'brightness'])
```

### 7. Batch Processing

**Features:**
- Process multiple images
- Directory scanning
- JSON output
- Error handling

**Usage:**
```python
from scripts.advanced_features import BatchProcessor

processor = BatchProcessor(recognizer=recognizer)
results = processor.process_directory('data/test', output_file='results.json')
```

### 8. REST API Server

**Endpoints:**
- `GET /api/health` - Health check
- `POST /api/recognize` - Recognize faces
- `POST /api/verify` - Verify two faces
- `POST /api/quality` - Assess image quality
- `POST /api/cluster` - Cluster face encodings

**Usage:**
```bash
python scripts/api_server.py
```

Then send POST requests with base64-encoded images.

### 9. Visualization Tools

**Features:**
- Dataset sample visualization
- Statistics plotting
- Person-specific samples
- Face detection visualization

**Usage:**
```python
from scripts.visualize import visualize_dataset_samples

visualize_dataset_samples(num_samples=16)
```

### 10. Preprocessing Pipeline

**Features:**
- Face detection (HOG/CNN)
- Face extraction
- Image normalization
- Encoding generation

**Usage:**
```python
from scripts.preprocess import preprocess_faces

processed_images, processed_labels = preprocess_faces('data/train')
```

## Unique Features

### 1. Educational Sample Data Generator
- Creates synthetic face images for testing
- No external dependencies required
- Perfect for learning and development

### 2. Comprehensive Test Suite
- Tests all components
- Automated validation
- Error reporting

### 3. Production-Ready API
- Flask-based REST API
- Base64 image support
- Error handling
- JSON responses

### 4. Real-time Webcam Support
- Live face recognition
- Frame-by-frame processing
- Performance optimized

### 5. Configurable System
- Centralized configuration
- Easy parameter tuning
- Model selection (HOG/CNN)

## Performance Features

- **Optimized Processing:** Batch operations for efficiency
- **Memory Management:** Efficient encoding storage
- **Multi-threading Ready:** Can be extended for parallel processing
- **Model Caching:** Save and load trained models

## Integration Examples

### With Web Applications
```python
# Use the API server
from scripts.api_server import app
app.run(host='0.0.0.0', port=5000)
```

### With Machine Learning Pipelines
```python
# Extract features for ML models
from scripts.preprocess import get_face_encoding
encodings = [get_face_encoding(img) for img in images]
```

### With Database Systems
```python
# Store encodings in database
import sqlite3
conn = sqlite3.connect('faces.db')
# Store encodings with person names
```

## Best Practices

1. **Image Quality:** Use clear, front-facing images (200x200 minimum)
2. **Lighting:** Ensure good lighting conditions
3. **Multiple Samples:** Use 5-10 images per person for better accuracy
4. **Regular Updates:** Retrain model when adding new people
5. **Quality Check:** Use quality assessment before training

## Contact

**RSK World**
- Email: help@rskworld.in
- Website: https://rskworld.in/

© 2026 RSK World. All rights reserved.

