Robust decorrelation-based iterative algorithm for accurate phase extraction from disturbed fringe patterns.
Opt Lett
; 48(12): 3315-3318, 2023 Jun 15.
Article
em En
| MEDLINE
| ID: mdl-37319090
We propose an accurate and robust phase extraction method for phase-shifting interferometry to reduce the phase ripple error caused by illumination, contrast, phase-shift spatiotemporal variation, and intensity harmonics. In this method, a general physical model of interference fringes is constructed, and the parameters are decoupled using a Taylor expansion linearization approximation. In the iterative process, the estimated illumination and contrast spatial distributions are decorrelated from the phase, thus reducing damage to the algorithm's robustness caused by a large number of linear model approximations. To the best of our knowledge, no method has been able to extract the phase distribution robustly and with high accuracy while considering all of these error sources simultaneously without imposing constraints inconsistent with the practical conditions.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Algoritmos
/
Interferometria
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2023
Tipo de documento:
Article