Error-reduction methods for shape measurement of low reflectivity specular surfaces by temporal phase unwrapping

2013 ◽  
Author(s):  
Yuxiang Wu ◽  
Huimin Yue ◽  
Biyu Zhao ◽  
Zhonghua Ou ◽  
Yong Liu
Keyword(s):  
Error Reduction ◽  
Phase Unwrapping ◽  
Shape Measurement ◽  
Temporal Phase ◽  
Reduction Methods ◽  
Specular Surfaces

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.

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

3D shape measurement by two-steps temporal phase unwrapping: hybrid method

2019 ◽  
Author(s):  
Jorge Luis Flores Nuñez ◽  
Adriana Silva ◽  
Jose A. Ferrari ◽  
Antonio Muñoz ◽  
Guillermo García Torales ◽  
...  
Keyword(s):  
Hybrid Method ◽  
Phase Unwrapping ◽  
Shape Measurement ◽  
3D Shape ◽  
3D Shape Measurement ◽  
Temporal Phase

Using temporal phase-unwrapping mask for shape measurement

2002 ◽  
Author(s):  
Yuchi Lin ◽  
Dongmei Cheng ◽  
Xiaobing Niu ◽  
Meirong Zhao ◽  
Zhanyuan Sun ◽  
...  
Keyword(s):  
Phase Unwrapping ◽  
Shape Measurement ◽  
Temporal Phase
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