Effective error reduction method in phase-shifting interferometer

2000 ◽  
Author(s):  
Yingjie Yu ◽  
Chunlong Wei ◽  
Mingyi Chen ◽  
Hongwei Guo
Keyword(s):  
Reduction Method ◽  
Error Reduction ◽  
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.

Twin-image reduction method for in-line digital holography using periphery and random reference phase-shifting techniques

2015 ◽  
Vol 350 ◽  
pp. 270-275 ◽  
Author(s):  
Teppei Oshima ◽  
Yusuke Matsudo ◽  
Takashi Kakue ◽  
Daisuke Arai ◽  
Tomoyoshi Shimobaba ◽  
...  
Keyword(s):  
Digital Holography ◽  
Reduction Method ◽  
Phase Shifting ◽  
Reference Phase

TRUNCATION ERROR REDUCTION METHOD FOR POISSON EQUATION

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1555-1558
Author(s):  
JIAN XIA ◽  
CHAOQUN LIU
Keyword(s):  
Poisson Equation ◽  
Iterative Process ◽  
Truncation Error ◽  
Reduction Method ◽  
Error Reduction ◽  
Coarse Grid ◽  
High Order ◽  
High Order Accuracy ◽  
Order Accuracy ◽  
Original Grid

A new so-called truncation error reduction method (TERM) is developed in this work. This is an iterative process which initially uses a coarse grid (2h) to estimate the truncation error and then reduces the error on the original grid (h). The purpose of this method is to use multigrid technique to achieve high-order accuracy on simple stencils.

A review of contouring-error reduction method in multi-axis CNC machining

2018 ◽  
Vol 125 ◽  
pp. 34-54 ◽  
Author(s):  
Zhen-yuan Jia ◽  
Jian-wei Ma ◽  
De-ning Song ◽  
Fu-ji Wang ◽  
Wei Liu
Keyword(s):  
Reduction Method ◽  
Error Reduction ◽  
Cnc Machining ◽  
Contouring Error

Bottom-Up Load Forecasting With Markov-Based Error Reduction Method for Aggregated Domestic Electric Water Heaters

2019 ◽  
Vol 55 (6) ◽  
pp. 6401-6413 ◽  
Author(s):  
Xun Gong ◽  
Julian L. Cardenas-Barrera ◽  
Eduardo Castillo-Guerra ◽  
Bo Cao ◽  
Saleh A. Saleh ◽  
...  
Keyword(s):  
Reduction Method ◽  
Load Forecasting ◽  
Error Reduction ◽  
Bottom Up ◽  
Water Heaters
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