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docs/FACIAL_CAPTURE.md
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# Facial Capture - MetaHuman Animator
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## Overview
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This document describes the facial capture workflow using MetaHuman Animator for the Dubai Metaverse project.
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## MetaHuman Animator
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### Overview
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MetaHuman Animator is a tool for capturing facial animation from video or live performance and applying it to MetaHumans in Unreal Engine.
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### Requirements
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- **MetaHuman Animator Plugin**: Enable in Unreal Engine
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- **Camera**: High-quality camera (webcam, DSLR, or phone)
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- **Lighting**: Good lighting conditions
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- **Calibration**: Facial calibration process
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---
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## Setup
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### Plugin Installation
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1. **Enable Plugin**:
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- Edit > Plugins
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- Search for "MetaHuman Animator"
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- Enable plugin
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- Restart editor
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2. **Verify Installation**:
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- Check plugin is active
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- Verify MetaHuman Animator tools are available
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### Camera Setup
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1. **Camera Selection**:
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- **Webcam**: Basic setup
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- **DSLR**: Higher quality
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- **Phone**: Convenient option
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2. **Lighting**:
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- **Even Lighting**: Avoid harsh shadows
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- **Front Lighting**: Light from front
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- **Avoid Backlighting**: Avoid strong backlighting
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3. **Positioning**:
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- **Distance**: 2-3 feet from camera
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- **Angle**: Face camera directly
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- **Stability**: Keep head still
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---
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## Calibration
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### Calibration Process
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1. **Start Calibration**:
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- Open MetaHuman Animator
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- Start calibration process
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- Follow on-screen instructions
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2. **Calibration Steps**:
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- **Neutral Expression**: Maintain neutral expression
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- **Head Movement**: Follow head movement instructions
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- **Facial Expressions**: Perform requested expressions
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- **Completion**: Complete calibration
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3. **Calibration Validation**:
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- Review calibration quality
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- Re-calibrate if needed
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- Save calibration
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---
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## Recording
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### Live Performance
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1. **Start Recording**:
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- Begin live performance
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- Speak dialogue
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- Perform expressions
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2. **Performance Tips**:
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- **Clear Speech**: Speak clearly
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- **Natural Expressions**: Use natural facial expressions
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- **Head Movement**: Natural head movement
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- **Eye Contact**: Look at camera
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3. **Stop Recording**:
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- Stop recording when complete
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- Review performance
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- Process if satisfied
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### Video Recording
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1. **Record Video**:
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- Record video of performance
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- Ensure good quality
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- Follow recording guidelines
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2. **Import Video**:
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- Import video to MetaHuman Animator
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- Process video
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- Extract facial animation
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---
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## Processing
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### Animation Processing
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1. **Process Performance**:
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- MetaHuman Animator processes performance
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- Extracts facial animation
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- Generates animation data
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2. **Review Animation**:
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- Review processed animation
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- Check quality
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- Refine if needed
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3. **Export Animation**:
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- Export animation to Unreal Engine
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- Apply to MetaHuman
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- Test in level
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---
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## Application
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### Apply to MetaHuman
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1. **Select MetaHuman**:
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- Select MetaHuman in level
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- Open MetaHuman Animator
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2. **Apply Animation**:
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- Apply captured animation
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- Preview animation
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- Adjust if needed
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3. **Integration**:
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- Integrate with dialogue system
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- Sync with audio
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- Test in context
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---
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## Best Practices
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### Recording
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1. **Quality**: Ensure good recording quality
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2. **Lighting**: Use good lighting
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3. **Stability**: Keep head stable
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4. **Natural**: Use natural expressions
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### Processing
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1. **Calibration**: Ensure good calibration
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2. **Review**: Review processed animation
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3. **Refinement**: Refine if needed
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4. **Testing**: Test in context
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---
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## Troubleshooting
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### Common Issues
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**Issue**: Calibration fails
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- **Solution**: Check lighting conditions
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- **Solution**: Ensure face is clearly visible
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- **Solution**: Follow calibration instructions carefully
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**Issue**: Animation quality poor
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- **Solution**: Improve recording quality
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- **Solution**: Re-calibrate
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- **Solution**: Check lighting
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**Issue**: Animation not applying
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- **Solution**: Check MetaHuman Animator plugin
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- **Solution**: Verify animation export
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- **Solution**: Check MetaHuman setup
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---
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## Use Cases
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### NPC Dialogue
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- **Purpose**: Animate NPCs during dialogue
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- **Implementation**: Capture dialogue performance
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- **Application**: Apply to MetaHuman NPCs
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### Cinematic Sequences
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- **Purpose**: Animate characters in cinematics
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- **Implementation**: Capture performance for cinematics
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- **Application**: Apply to cinematic MetaHumans
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---
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## Documentation
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### Performance Documentation
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Document each performance:
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- **Purpose**: What the performance is for
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- **MetaHuman**: Which MetaHuman it's applied to
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- **Context**: Where it's used
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- **Quality**: Animation quality notes
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---
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**Version**: 1.0
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**Last Updated**: [Current Date]
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**Note**: Facial capture is optional. NPCs can function without facial capture using standard animation.
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