15 October 2012 Speckle reduction for fringe patterns using a database system based on the empirical mode decomposition
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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.
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Wei-Hung Su, Wei-Hung Su, Chen-Wei Lee, Chen-Wei Lee, Chao-Kuei Lee, 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); doi: 10.1117/12.930603; https://doi.org/10.1117/12.930603
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