Speckle reduction for fringe patterns using a database system based on the empirical mode decomposition

Wei-Hung Su; Chen-Wei Lee; Chao-Kuei Lee

doi:10.1117/12.930603

15 October 2012 Speckle reduction for fringe patterns using a database system based on the empirical mode decomposition

Wei-Hung Su, Chen-Wei Lee, Chao-Kuei Lee

Proceedings Volume 8497, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI; 84970M (2012) https://doi.org/10.1117/12.930603
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

In this paper, we investigate the application of the EMD to automatically reduce speckles on the fringe pattern. It is found that the number of the removed intrinsic mode functions (IMFs) is sensitive to the period of the fringe pattern, but not sensitive to the speckle size and the speckle amplitude. Thus, a database system based on statistic simulations for finding the optimization of removing speckles is built. With this database, more than 80% speckles on the fringe pattern can be robotically reduced.

Citation Download Citation

Wei-Hung Su, Chen-Wei Lee, and Chao-Kuei Lee "Speckle reduction for fringe patterns using a database system based on the empirical mode decomposition", Proc. SPIE 8497, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI, 84970M (15 October 2012); https://doi.org/10.1117/12.930603

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KEYWORDS

Speckle

Fringe analysis

Databases

Signal to noise ratio

Speckle pattern

Interference (communication)

Fourier transforms

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