Premium
Realization of Absolute‐Phase Unwrapping and Speckle Suppression in Laser Digital Holography
Author(s) -
Wang Mingqing,
Li Fang,
Zheng Ming,
Lu Wei,
Jia Yan,
Yu Qingnan,
Zhao Sufen,
Wu Jian
Publication year - 2017
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201600378
Subject(s) - speckle pattern , digital holography , absolute phase , speckle noise , phase (matter) , holography , optics , computer science , amplitude , distortion (music) , artificial intelligence , computer vision , speckle imaging , laser , phase retrieval , physics , phase noise , fourier transform , telecommunications , amplifier , bandwidth (computing) , quantum mechanics
In this paper, an absolute‐phase unwrapping and speckle suppression approach to reconstruct a three‐dimensional (3‐D) image of an object with laser digital holography is described. This method offers three advantages to enhance the performance of the phase reconstruction technique. First, both speckle suppression and phase unwrapping are processed in the complex amplitude domain rather than in the single phase or amplitude domain. With this approach, the phase details of the object are better preserved upon phase reconstruction. Second, the proposed algorithm requires no threshold determination and thus achieves self‐adaptive speckle suppression and robust phase unwrapping, in contrast to other methods. Finally, an improved dual‐domain image denoising method is applied to further remove speckle‐remnant‐induced phase distortion. Ideal 3‐D phase reconstruction results are obtained both theoretically and experimentally for the first time.