Optimal design of segmented planar imaging for dense azimuthal sampling lens array

doi:10.1364/OE.427750

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	Optimal design of segmented planar imaging for dense azimuthal sampling lens array
	H. Hu; C. Liu; Y. Zhang; Q. Feng and S. Liu
	2021
发表期刊	Optics Express
ISSN	10944087
卷号	29 期号:15 页码:24300-24314
摘要	Due to the sparsity and inhomogeneity of sampling points in spatial frequency domain, the effectiveness of the rules for finding two points in the target object from the autocorrelation is limited, and the reconstructed image is blurred. Traditional segmented planar imaging usually needs to enhance image sharpness and minimize artifacts with continuous modification to the reconstruction algorithm. However, if the ideal image quality is not high, there will be less space for actual image optimization after sampling. To solve this problem, a segmented planar imager based on dense azimuthal sampling lens array is proposed in this paper. The radial fill factor of the lens array is 0.5, and the number of radial-spoke photonic integrated circuits (PIC) is twice that of the traditional system, which can effectively mitigate image artifacts and improve ideal image quality. Based on the dense azimuth sampling lens array architecture, the full-chain theoretical model is established, a discrete spectrum matrix reconstruction method is proposed to reduce the space between spatial sampling points. With this method, it can achieve the continuous sampling of all integer multiples fundamental frequency within the highest frequency range including zero frequency along the baseline direction. In addition, the number of radial-spoke PICs and the effective spatial sampling radius are further simulated. The results show that the upper limit of the peak signal-To-noise ratio (PSNR) can be improved by increasing the number of azimuthal sampling PICs, and reducing the effective spatial sampling radius can weaken the noise and enhance the definition of the actual image. The research results of system performance have certain reference significance for the design of segmented planar imagers in optimizing the number of radial-spoke PICs. The method of combining structural design and sampling is of great significance for improving the imaging quality of the system. 2021 OSA - The Optical Society. All rights reserved.
DOI	10.1364/OE.427750
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65498
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	H. Hu,C. Liu,Y. Zhang,et al. Optimal design of segmented planar imaging for dense azimuthal sampling lens array[J]. Optics Express,2021,29(15):24300-24314.
APA	H. Hu,C. Liu,Y. Zhang,&Q. Feng and S. Liu.(2021).Optimal design of segmented planar imaging for dense azimuthal sampling lens array.Optics Express,29(15),24300-24314.
MLA	H. Hu,et al."Optimal design of segmented planar imaging for dense azimuthal sampling lens array".Optics Express 29.15(2021):24300-24314.

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