Real-time visualisation of deformation fields using speckle interferometry and temporal phase unwrapping

2004 ◽  
Vol 41 (4) ◽  
pp. 601-620 ◽  
Author(s):  
C.R Coggrave ◽  
J.M Huntley
Keyword(s):  
Real Time ◽  
Speckle Interferometry ◽  
Phase Unwrapping ◽  
Temporal Phase

Modified temporal-phase-unwrapping method for measuring in real time the out-of-plane displacements of the tympanic membrane of Mongolian Gerbil

Optik ◽  
2008 ◽  
Vol 119 (16) ◽  
pp. 783-787 ◽  
Author(s):  
R.A. Martínez-Celorio ◽  
Joris J.J. Dirckx ◽  
Jan A.N. Buytaert ◽  
Luis Martí-López ◽  
Wim Decraemer
Keyword(s):  
Tympanic Membrane ◽  
Real Time ◽  
Mongolian Gerbil ◽  
Phase Unwrapping ◽  
Temporal Phase ◽  
Out Of Plane

scholarly journals An Error-Reduction Method for Temporal Phase Unwrapping Based on Double Three-Step Phase-Shifting and Least-Squares Fitting

2012 ◽  
Vol 6-7 ◽  
pp. 76-81
Author(s):  
Yong Liu ◽  
Ding Fa Huang ◽  
Yong Jiang
Keyword(s):  
Least Squares ◽  
Reduction Method ◽  
Intermediate Phase ◽  
Error Reduction ◽  
Phase Unwrapping ◽  
Phase Shifting ◽  
Surface Measurement ◽  
Acquisition Time ◽  
Least Squares Fitting ◽  
Temporal Phase

Phase-shifting interferometry on structured light projection is widely used in 3-D surface measurement. An investigation shows that least-squares fitting can significantly decrease random error by incorporating data from the intermediate phase values, but it cannot completely eliminate nonlinear error. This paper proposes an error-reduction method based on double three-step phase-shifting algorithm and least-squares fitting, and applies it on the temporal phase unwrapping algorithm using three-frequency heterodyne principle. Theoretical analyses and experiment results show that this method can greatly save data acquisition time and improve the precision.

Phase unwrapping algorithms for use in a true real-time optical body sensor system for use during radiotherapy

2011 ◽  
Vol 50 (35) ◽  
pp. 6430 ◽  
Author(s):  
James Parkhurst ◽  
Gareth Price ◽  
Phil Sharrock ◽  
Christopher Moore
Keyword(s):  
Real Time ◽  
Phase Unwrapping ◽  
Sensor System

3D shape measurement with temporal phase unwrapping and 1-D continuous wavelet transform

2021 ◽  
Author(s):  
Susana L. Burnes-Rudecino ◽  
José de Jesús Villa Hernández ◽  
Gamaliel Moreno ◽  
Ismael de la Rosa ◽  
Efrén González ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Continuous Wavelet Transform ◽  
Phase Unwrapping ◽  
Shape Measurement ◽  
Continuous Wavelet ◽  
3D Shape ◽  
3D Shape Measurement ◽  
Temporal Phase
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