Metrology (algorithms)

• Image processing: automatic pointer detection
• Accelerometers and gyroscopes to capture the wrist movements
• Robust statistics for possibly noisy measurements
• Acoustic measurements (ticking of the watch)
  • Multi-oscillators
  • High frequencies
  • Robust to low signal-to-noise ratio
• Optical measurements (detection of rotating arms by a laser)
  • Tourbillon / Triple axis tourbillon
  • Damped oscillators