Noise in phase shifting interferometry.
Opt Express
; 17(11): 8789-94, 2009 May 25.
Article
em En
| MEDLINE
| ID: mdl-19466128
We present a theoretical analysis to estimate the amount of phase noise due to noisy interferograms in Phase Shifting Interferometry (PSI). We also analyze the fact that linear filtering transforms corrupting multiplicative noise in Electronic Speckle Pattern Interferometry (ESPI) into fringes corrupted by additive gaussian noise. This fact allow us to obtain a formula to estimate the standard deviation of the noisy demodulated phase as a function of the spectral response of the preprocessing spatial filtering combined with the PSI algorithm used. This phase noise power formula is the main result of this contribution.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Refratometria
/
Algoritmos
/
Modelos Estatísticos
/
Interferometria
Tipo de estudo:
Risk_factors_studies
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Estados Unidos