12. Interface: electronic candle
• Commercial product!
• Magnetic sensor!
• detect a movement of a match!
• Microphone!
• detect blowing!
• Flame color LED!
• Monitor voltage on LED!
13. Software
• Image processing: OpenCV!
• Extract a person!
• Background subtraction!
• Detect and morph a facial image!
• Haar like features!
• Rendering: OpenGL!