Phase Unwrapping Using Interlaced Fringes for Phase-Shifting Techniques

2011 ◽  
Vol 60 (9) ◽  
pp. 3185-3193 ◽  
Author(s):  
Feipeng Da ◽  
Xin Wang ◽  
Hao Huang
Keyword(s):  
Phase Unwrapping ◽  
Phase Shifting

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.

scholarly journals Variational phase recovering without phase unwrapping in phase-shifting interferometry

2018 ◽  
Vol 96 (6) ◽  
pp. 1217-1229
Author(s):  
Ricardo Legarda-Saenz ◽  
Alejandro Téllez Quiñones ◽  
Carlos Brito-Loeza ◽  
Arturo Espinosa-Romero
Keyword(s):  
Phase Unwrapping ◽  
Phase Shifting ◽  
Phase Shifting Interferometry

Matched spatial-phase-shifting for the temporal-phase-unwrapping in electronic speckle pattern interferometry

Optik ◽  
2001 ◽  
Vol 112 (11) ◽  
pp. 515-520 ◽  
Author(s):  
R.A. Martínez-Celorio ◽  
A. Dávila ◽  
B. Barrientos ◽  
J.H. Puga ◽  
Luis Martí López
Keyword(s):  
Speckle Pattern ◽  
Phase Unwrapping ◽  
Phase Shifting ◽  
Electronic Speckle Pattern Interferometry ◽  
Spatial Phase ◽  
Temporal Phase
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