Impact Localization on Rigid Surfaces Using Hermitian Angle Distribution for Human–Computer Interface Applications

@article{Hanh2018ImpactLO,
  title={Impact Localization on Rigid Surfaces Using Hermitian Angle Distribution for Human–Computer Interface Applications},
  author={Nguyen Quang Hanh and Vaninirappuputhenpurayil Gopalan Reju and Andy W. H. Khong},
  journal={IEEE Transactions on Multimedia},
  year={2018},
  volume={20},
  pages={1448-1461}
}
We propose an algorithm to localize impacts on rigid surfaces using induced vibration signals. This allows for the conversion of daily objects, such as tabletops and glass panels, into human–computer touch interfaces using low-cost piezoelectric sensors. Impact localization is achieved by estimating the time-of-arrivals and subsequently time-difference-of-arrivals of the sensor-received signals. Time-of-arrival estimation is highly challenging with increasing source–sensor distance due to the… CONTINUE READING