Retrieval of phase derivative discontinuities in digital speckle pattern interferometry fringes using the Wigner-Ville distribution

被引：4

作者：

Federico, A ^{[1
]}

Kaufmann, GH ^{[1
]}

机构：

[1] Inst Nacl Tecnol Ind, Ctr Invest & Desarrollo Fis & Metrol, Buenos Aires, DF, Argentina

来源：

INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS | 2004年 / 5531卷

关键词：

digital speckle pattern interferometry; wavelet transform; phase measurement; Wigner-Ville distribution; fringe analysis;

D O I：

10.1117/12.555764

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We evaluate the application of the Wigner-Ville distribution (WVD) to measure phase gradient maps in digital speckle pattern interferometry (DSPI), when the generated correlation fringes present phase discontinuities. The performance of the WVD method is evaluated using computer-simulated fringes. The influence of the filtering process to smooth DSPI fringes and additional drawbacks that emerge when this method is applied are discussed. A comparison with the conventional method based on the continuous wavelet transform in the stationary phase approximation is also presented.

引用

页码：127 / 133

页数：7

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