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Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising

Imaging past the diffraction limit is of significance to an optical system. Fourier ptychography (FP) is a novel coherent imaging technique that can achieve this goal and it is widely used in microscopic imaging. Most phase retrieval algorithms for FP reconstruction are based on Gaussian measurement...

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Autores principales: Li, Zhixin, Wen, Desheng, Song, Zongxi, Liu, Gang, Zhang, Weikang, Wei, Xin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164269/
https://www.ncbi.nlm.nih.gov/pubmed/30231593
http://dx.doi.org/10.3390/s18093154
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author Li, Zhixin
Wen, Desheng
Song, Zongxi
Liu, Gang
Zhang, Weikang
Wei, Xin
author_facet Li, Zhixin
Wen, Desheng
Song, Zongxi
Liu, Gang
Zhang, Weikang
Wei, Xin
author_sort Li, Zhixin
collection PubMed
description Imaging past the diffraction limit is of significance to an optical system. Fourier ptychography (FP) is a novel coherent imaging technique that can achieve this goal and it is widely used in microscopic imaging. Most phase retrieval algorithms for FP reconstruction are based on Gaussian measurements which cannot extend straightforwardly to long range, sub-diffraction imaging setup because of laser speckle noise corruption. In this work, a new FP reconstruction framework is proposed for macroscopic visible imaging. When compared with existing research, the reweighted amplitude flow algorithm is adopted for better signal modeling, and the Regularization by Denoising (RED) scheme is introduced to reduce the effects of speckle. Experiments demonstrate that the proposed method can obtain state-of-the-art recovered results on both visual and quantitative metrics without increasing computation cost, and it is flexible for real imaging applications.
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spelling pubmed-61642692018-10-10 Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising Li, Zhixin Wen, Desheng Song, Zongxi Liu, Gang Zhang, Weikang Wei, Xin Sensors (Basel) Article Imaging past the diffraction limit is of significance to an optical system. Fourier ptychography (FP) is a novel coherent imaging technique that can achieve this goal and it is widely used in microscopic imaging. Most phase retrieval algorithms for FP reconstruction are based on Gaussian measurements which cannot extend straightforwardly to long range, sub-diffraction imaging setup because of laser speckle noise corruption. In this work, a new FP reconstruction framework is proposed for macroscopic visible imaging. When compared with existing research, the reweighted amplitude flow algorithm is adopted for better signal modeling, and the Regularization by Denoising (RED) scheme is introduced to reduce the effects of speckle. Experiments demonstrate that the proposed method can obtain state-of-the-art recovered results on both visual and quantitative metrics without increasing computation cost, and it is flexible for real imaging applications. MDPI 2018-09-18 /pmc/articles/PMC6164269/ /pubmed/30231593 http://dx.doi.org/10.3390/s18093154 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Zhixin
Wen, Desheng
Song, Zongxi
Liu, Gang
Zhang, Weikang
Wei, Xin
Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising
title Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising
title_full Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising
title_fullStr Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising
title_full_unstemmed Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising
title_short Sub-Diffraction Visible Imaging Using Macroscopic Fourier Ptychography and Regularization by Denoising
title_sort sub-diffraction visible imaging using macroscopic fourier ptychography and regularization by denoising
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164269/
https://www.ncbi.nlm.nih.gov/pubmed/30231593
http://dx.doi.org/10.3390/s18093154
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