Abstract
The measurement of dynamic displacements using speckle interferometry and temporal phase unwrapping allows the evaluation of displacement fields without the propagation of spatial unwrapping errors. In this work we present a novel temporal phase-shifting (TPS) method that searches for the peak of the windowed Fourier transform of the modulated intensity signal and evaluates the phase at that frequency instead of at the carrier frequency. The performance of this TPS method is compared with that of standard algorithms by using numerical simulations. The unwrapping success rate and the spatial rms phase error are evaluated, and experimental results that show the performance of this new approach are finally presented.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.