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Hilbert-Huang processing for single-exposure two-dimensional grating interferometry
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DOI：10.1364/OE.21.028359.png)
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摘要
En 中文
Single-shot crossed-type fringe pattern processing and analysis method called Hilbert-Huang grating interferometry (HHGI) is proposed. It consist of three main procedures: (1) crossed pattern is resolved into two fringe families using novel orthogonal empirical mode decomposition approach, (2) separated fringe sets are filtered using modified automatic selective reconstruction aided by enhanced fast empirical mode decomposition and mutual information detrending, and (3) Hilbert spiral transform is employed for fringe phase demodulation. Numerical and experimental studies corroborate the validity, versatility and robustness of the proposed HHGI technique. It can be successfully applied to multiplicative and additive type crossed patterns with sinusoidal and binary orthogonal component structures. Efficient adaptive filtering enables successful fast processing and analysis of complex and defected patterns. (C) 2013 Optical Society of America
Keyword:
EMPIRICAL MODE DECOMPOSITION
RAY PHASE-CONTRAST
OPTICAL FRINGE PATTERNS
SHEARING INTERFEROMETER
NOISE-REDUCTION
SHIFTING METHOD
ALGORITHM
DEFLECTOMETRY
TREND
REAL
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期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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