Robust fringe detection based on bi-wavelet transform for self-mixing displacement sensor

@article{Bernal2015RobustFD,
  title={Robust fringe detection based on bi-wavelet transform for self-mixing displacement sensor},
  author={Olivier D. Bernal and H. C. Seat and Usman Zabit and Frederic Surre and Thierry Bosch},
  journal={2015 IEEE SENSORS},
  year={2015},
  pages={1-4}
}
A novel signal processing method based on custom-made Wavelet Transform (WT) is presented for robust detection of fringes contained in the interferometric signal of Self-Mixing (SM) laser diode sensors. It enables the measurement of arbitrarily-shaped vibrations even in the corruptive presence of speckle. Our algorithm is based on the pattern recognition capability of the customized WT for identifying SM fringes. Once the fringes have been correctly detected, phase unwrapping methods can be… CONTINUE READING

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