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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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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. |
format | Online Article Text |
id | pubmed-6164269 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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