Apodized coherent transfer function constraint for partially coherent Fourier ptychographic microscopy

doi:10.1364/oe.27.014099

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	Apodized coherent transfer function constraint for partially coherent Fourier ptychographic microscopy
	X.Chen; Y.Q.Zhu; M.L.Su; D.Y.Li; Q.Q.Mu; L.Xuan
	2019
发表期刊	Optics Express
ISSN	1094-4087
卷号	27 期号:10 页码:14099-14111
摘要	Fourier ptychographic microscopy (FPM) is a recently developed computational microscopy approach that produces both wide field-of-view (FOV) and high resolution (HR) intensity and a phase image of the sample. Inspired by the ideas of synthetic aperture and phase retrieval. FPM iteratively stitches multiple low-resolution (LR) images with variable illumination angles in Fourier space to reconstruct an HR complex image. Typically, FPM illuminating the sample with an LED array is approximated as a coherent imaging process. and the coherent transfer function (CTF) is imposed as a support constraint in Fourier space. However, a millimeter-scale LED is inapposite to be treated as a coherent light source. As a result, the quality of reconstructed image is degraded by the inappropriate approximation. In this paper. we analyse the coherence of an FPM system and propose a novel constraint approach termed Apodized CTF (AC) constraint ill Fourier space. Results on both simulated data and actual captured data show that this new constraint is more stable and robust than CTF. This approach can also relax the coherence requirement of illumination. In addition, it is simple, does not require additional computations. and is easy to be embedded in almost all the reconstruction algorithms proposed so far. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
关键词	phase retrieval,wide-field,illumination,strategy,image,Optics
DOI	10.1364/oe.27.014099
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63449
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X.Chen,Y.Q.Zhu,M.L.Su,et al. Apodized coherent transfer function constraint for partially coherent Fourier ptychographic microscopy[J]. Optics Express,2019,27(10):14099-14111.
APA	X.Chen,Y.Q.Zhu,M.L.Su,D.Y.Li,Q.Q.Mu,&L.Xuan.(2019).Apodized coherent transfer function constraint for partially coherent Fourier ptychographic microscopy.Optics Express,27(10),14099-14111.
MLA	X.Chen,et al."Apodized coherent transfer function constraint for partially coherent Fourier ptychographic microscopy".Optics Express 27.10(2019):14099-14111.

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