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

Alejandro Federico; Guillermo H. Kaufmann

doi:10.1117/12.555764

2 August 2004 Retrieval of phase-derivative discontinuities in digital speckle pattern interferometry fringes using the Wigner-Ville distribution

Alejandro Federico, Guillermo H. Kaufmann

Author Affiliations +

Proceedings Volume 5531, Interferometry XII: Techniques and Analysis; (2004) https://doi.org/10.1117/12.555764
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

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.

Citation Download Citation

Alejandro Federico and Guillermo H. Kaufmann "Retrieval of phase-derivative discontinuities in digital speckle pattern interferometry fringes using the Wigner-Ville distribution", Proc. SPIE 5531, Interferometry XII: Techniques and Analysis, (2 August 2004); https://doi.org/10.1117/12.555764

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