Speckle noise reduction in digital holography with spatial light modulator and nonlocal means algorithm

被引：23

作者：

Leng, Junmin ^{[1
,2
]}

Sang, Xinzhu ^{[1
]}

Yan, Binbin ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[2] Beijing Informat Sci & Technol Univ, Sch Informat & Commun, Beijing 100032, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2014年 / 12卷 / 04期

基金：

中国国家自然科学基金;

关键词：

IMAGES;

D O I：

10.3788/COL201412.040301

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An integrated method based on optical and digital image processing is presented to suppress speckle in digital holography. A spatial light modulator is adopted to introduce random phases to the illuminating beam. Multiple holograms are reconstructed and superimposed, and the intensity is averaged to smooth the noise. The adaptive algorithm based on the nonlocal means is designed to further suppress the speckle. The presented method is compared with other methods. The experimental results show that speckle reduction is improved, and the proposed method is effective and feasible.

引用

页数：5

共 19 条

[1]

Amitai U., 2013, APPL OPT A, V195

[2] A review of image denoising algorithms, with a new one [J].