Chinese Optics Letters, 2008, 6 (1): 0138, Published Online: Jan. 29, 2008  

Variational denoising method for electronic speckle pattern interferometry Download: 607次

Author Affiliations
College of Precise Instrument and Optical Electronic Engineering, Tianjin University, Tianjin 3000722Key Laboratory of Opto-Electronics Information Technical Science, Ministry of Education, Tianjin University, Tianjin 3000723Department of Applied Physics, Tianjin University, Tianjin 300072
Abstract
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.

Fang Zhang, Wenyao Liu, Chen Tang, Jinjiang Wang, Li Ren. Variational denoising method for electronic speckle pattern interferometry[J]. Chinese Optics Letters, 2008, 6(1): 0138.

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