Wavelet denoising algorithm based on the principle of shearing interferometry

被引：0

作者：

Lin, Chao ^{[1
]}

Qian, Xiaofan ^{[1
]}

Li, Bin ^{[1
]}

Li, Xinghua ^{[1
]}

Shi, Ying ^{[1
]}

Liu, Dan ^{[1
]}

机构：

[1] Laser Institute, Faculty of Science, Kunming University of Science and Technology, Kunming

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2012年 / 39卷 / SUPPL.2期

关键词：

Holography; Noise reduction; Principle of shearing interferometry; Wavelet transform;

D O I：

10.3788/CJL201239.s209008

中图分类号：

学科分类号：

摘要：

It is one of the most important applications in holography to use hologram to obtain the phase information, and noise reduction is necessary in the process. The conventional denoising algorithms often cause fringe breaks and loss of phase detail when the phase of optical filed has high spatial variation frequency, these problems can be reduced significantly through introducing shearing interferometry, but it has not been researched which denoising algorithm will get the best denoising result. Shearing median filter algorithm is compared with shearing wavelet denoising gorithm, which presents corresponding theoretical analysis, fulfills simulated calculation and experimental verification, and proves that the denoising result of wavelet denoising algorithm is the best.

引用

共 11 条

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