scholarly journals The spatial-temporal phase unwrapping algorithm for fringe projection profilometry

2021 ◽  
Author(s):  
Haihua An ◽  
Yiping Cao ◽  
Haitao Wu ◽  
Na Yang ◽  
Cai Xu ◽  
...  
Keyword(s):  
Phase Unwrapping ◽  
Fringe Projection ◽  
Temporal Phase ◽  
Fringe Projection Profilometry

Practical Framework for Phase Retrieval and Invalidity Identification with Temporal Phase Unwrapping Method in Fringe Projection Profilometry

2011 ◽  
Vol 83 ◽  
pp. 179-184 ◽  
Author(s):  
Lei Huang ◽  
Anand Krishna Asundi
Keyword(s):  
Phase Retrieval ◽  
Phase Relationship ◽  
Phase Unwrapping ◽  
Three Dimensions ◽  
Fringe Projection ◽  
Temporal Phase ◽  
Absolute Phase ◽  
Fringe Patterns ◽  
Mean Square Errors ◽  
Fringe Projection Profilometry

Phase retrieval from fringe patterns is a primary procedure in fringe projection profilometry. Only accurate phase values result in three dimensions with certain accuracy. Phase shifting method plus temporal phase unwrapping approach provides not only the unwrapped absolute phase, but also the modulation map, background map, root mean square errors of least squares fitting, and phase relationship between two neighboring pixels, which can be used for the identification of phase invalidity. A practical phase retrieval frame work is presented to accurately calculate the absolute phase within reliable regions only, with which those unavailable phase points can be automatically identified with thresholds selection and criterion testing and then removed or interpolated according to applications. Experimental results show practical feasibility of the proposed framework.

scholarly journals Multi-anchor spatial phase unwrapping for fringe projection profilometry

2019 ◽  
Vol 27 (23) ◽  
pp. 33488 ◽  
Author(s):  
Sen Xiang ◽  
You Yang ◽  
Huiping Deng ◽  
Jin Wu ◽  
Li Yu
Keyword(s):  
Phase Unwrapping ◽  
Fringe Projection ◽  
Spatial Phase ◽  
Fringe Projection Profilometry

scholarly journals Absolute phase unwrapping with SVM for fringe-projection profilometry

2020 ◽  
Vol 14 (12) ◽  
pp. 2645-2651
Author(s):  
Sen Xiang ◽  
Huiping Deng ◽  
Jin Wu ◽  
Changjian Zhu
Keyword(s):  
Phase Unwrapping ◽  
Fringe Projection ◽  
Absolute Phase ◽  
Fringe Projection Profilometry
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