A database system using the empirical mode decomposition to smooth subjective speckles in fringe patterns

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

doi:10.1117/12.859767

18 August 2010 A database system using the empirical mode decomposition to smooth subjective speckles in fringe patterns

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

Author Affiliations +

Proceedings Volume 7781, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IV; 77810P (2010) https://doi.org/10.1117/12.859767
Event: SPIE Photonic Devices + Applications, 2010, San Diego, California, United States

Abstract

A database system based on the empirical mode decomposition (EMD) to automatically reduce the subjective speckles in a fringe pattern is presented. To accurately evaluate the performance of speckle-reduction by the EMD, a method to design a computer generated signal is proposed as well. The simulation showed that the number to removed IMFs is changed when the period of the computer generated signal or the signal-to-noise ratio varies. Thus, we built up a database to identify the required number of removed IMFs. With reference to the database, speckles on the fringe pattern can be efficiently and robotically reduced.

Citation Download Citation

Wei-Hung Su, Chao-Kuei Lee, and Cheng-Wei Lee "A database system using the empirical mode decomposition to smooth subjective speckles in fringe patterns", Proc. SPIE 7781, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IV, 77810P (18 August 2010); https://doi.org/10.1117/12.859767

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