Variational denoising method for electronic speckle pattern interferometry

作     者：张芳 刘文耀 唐晨 王晋疆 任丽 

作者机构：College of Precise Instrument and Optical Electronic EngineeringTianjin University Department of Applied PhysicsTianjin University 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2008年第6卷第1期

页      面：38-40页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：Computer simulation Interferometry Partial differential equations Speckle 

摘      要：Traditional speckle fringe patterns by electronic speckle pattern interferometry （ESPI） are inherently noisy and of limited visibility, so denoising is the key problem in ESPI. We present the variational denoising method for ESPI. This method transforms the image denosing to minimizing an appropriate penalized energy function and solving a partial differential equation. We test the proposed method on computer- simulated and experimental speckle correlation fringes, respectively. The results show that this technique is capable of significantly improving the quality of fringe patterns. It works well as a pre-processing for the fringe patterns by ESPI.