# Quick Start: Screenshot Capture for Unusual Activity

## How It Works (3 Simple Steps)

### Step 1: Start Live Camera Monitoring

1. Go to **Live Camera** page
2. Select your camera from the dropdown (USB camera must be connected)
3. Check the detection models you want to use:
   - ✓ Weapon Detection (guns/knives)
   - ✓ Violence Detection (fighting, aggression)
   - ✓ Anomaly Detection (unusual behavior)
   - ✓ Pose Detection (unsafe positions)
4. Click **"Start Camera"** button

### Step 2: Monitor in Real-Time

- The live feed appears with AI analysis
- Watch the **"Recent Detections"** gallery at the top
- When unusual activity is detected, **screenshots are automatically captured**
- Status indicators show:
  - 🟢 LIVE - Camera is streaming
  - 📊 Statistics - Real-time detection counts
  - 🚨 Alerts - Active threats

### Step 3: Review Detections

- Look at the **"Recent Detections"** gallery
- Click any thumbnail to see full details:
  - Full-size screenshot
  - Detection type (Weapon/Violence/Anomaly)
  - Alert severity level
  - Exact timestamp
  - Confidence score

## What Gets Automatically Captured?

| Activity           | Icon | Alert Level     | Example                             |
| ------------------ | ---- | --------------- | ----------------------------------- |
| Weapon Detected    | 🔫   | HIGH            | Gun/knife detection with confidence |
| Violence           | 👊   | MEDIUM-CRITICAL | Fighting, aggression detected       |
| Anomaly            | ❓   | LOW-CRITICAL    | Unusual behavior pattern            |
| Risk Pose + Weapon | ⚠️   | HIGH-CRITICAL   | Person holding weapon + unsafe pose |

## Features

✅ **Automatic Capture** - No manual screenshots needed  
✅ **Instant Storage** - Saved to local `uploads/detections/` folder  
✅ **Real-time Gallery** - Updates every 5 seconds  
✅ **Secure Access** - Only your detections visible to you  
✅ **Fast Retrieval** - Thumbnail preview with instant details  
✅ **Timestamped** - Exact time of each detection recorded

## File Storage Location

All screenshots saved to: **`uploads/detections/`**

Files are named: `detection_{type}_{date}_{time}_{id}.jpg`

Example: `detection_weapon_20250503_143022_a7f2b1c3.jpg`

## Common Use Cases

### 🏢 Security Monitoring

```
1. Start camera in lobby/entrance
2. Enable weapon + violence detection
3. Monitor gallery for threats
4. Escalate alerts to security team
```

### 👮 Incident Investigation

```
1. Review captured screenshots from incident time
2. Click detections to see high-res images
3. Export screenshots as evidence
4. Document timeline with timestamps
```

### 📋 Audit & Compliance

```
1. System automatically logs all detections
2. Each detection has timestamp and confidence
3. Create incident reports with evidence
4. Archive screenshots for compliance
```

## Keyboard Shortcuts

| Action             | Shortcut |
| ------------------ | -------- |
| Start/Stop Camera  | Space    |
| Toggle Recording   | R        |
| Fullscreen View    | F        |
| Refresh Detections | Ctrl+R   |

## Tips for Best Results

1. **Good Lighting**: Ensure adequate lighting for detection
2. **Clear View**: Keep camera unobstructed
3. **Proper Angle**: Position camera to capture potential threats
4. **Multiple Models**: Enable multiple detection types for better coverage
5. **Regular Review**: Check gallery frequently during monitoring

## Storage Management

- Each screenshot is ~500KB (typical 1080p JPEG)
- 100 detections = ~50MB
- Consider archiving old detections to save space
- Monitor disk usage: `uploads/detections/` folder

## Export & Reporting

To save detection screenshots:

1. Click on detection in gallery
2. Right-click image → "Save image as..."
3. Use for incident reports or compliance documentation

## Support & Troubleshooting

**Camera Not Starting?**

- Ensure USB camera is connected
- Try different USB port
- Restart browser
- Check camera drivers installed

**No Detections Appearing?**

- Verify at least one model is selected
- Camera must be running (green indicator)
- Check if unusual activity actually present
- Review model confidence thresholds

**Screenshots Not Saving?**

- Check folder permissions on `uploads/detections/`
- Ensure sufficient disk space
- Check browser console for errors (F12)
- Contact admin if folder missing

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**Ready to go?** Start the live camera and monitor unusual activity! 🎥