A denoising scheme for DSPI fringes based on fast bi-dimensional ensemble empirical mode decomposition and BIMF energy estimation

被引：16

作者：

Zhou, Yi ^{[1
]}

Li, Hongguang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai, Peoples R China

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2013年 / 35卷 / 1-2期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Digital speckle pattern interferometry; Speckle noise; Denoising; Fast bi-dimensional ensemble empirical; mode decomposition; BIMF energy estimation; SPECKLE-PATTERN INTERFEROMETRY; WAVELET TRANSFORM; NOISE-REDUCTION; SIGNALS; DEFORMATIONS; FILTER;

D O I：

10.1016/j.ymssp.2012.09.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Digital speckle pattern interferometry (DSPI) is a new and efficient technique for measuring the difference in out-of-plane displacement. However, DSPI fringes contain low spatial information degraded with random speckle noise and background intensity. A denoising scheme based on fast bi-dimensional ensemble empirical mode decomposition (FBEEMD) and energy estimation of bi-dimensional intrinsic mode function (BIMF) is proposed to reduce speckle noise in this paper. Furthermore, the denoising scheme is compared with other denoising methods, and evaluated quantitatively using computer-simulated and experimental DSPI fringes. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：369 / 382

页数：14

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