Implement real-time hand posture analysis using ml5.js handpose model to provide feedback on piano playing technique. This feature helps prevent injuries and improves playing technique by analyzing:
- Wrist position (should be level with hand)
- Finger curvature (natural curve, not too flat or curved)
- Palm position (arched, not collapsed)
- Thumb position (relaxed and rounded)
Features:
- Real-time webcam-based hand tracking with ml5.js
- Posture scoring (0-100) with color-coded feedback
- Specific issue detection with actionable recommendations
- Bonus XP system for maintaining good posture (80+ score)
- Visual overlay showing hand landmarks and problem areas
- Integrated into Practice Mode with toggle button
Technical implementation:
- HandPostureAnalyzer service with classical piano technique rules
- PostureCamera component with webcam access and canvas overlay
- Integration with gamification system (bonus XP rewards)
- Responsive UI with gradient themes and animations
This is a unique competitive advantage - automated posture correction that typically requires expensive piano teachers.
Claude