Diffractive lensless imaging with optimized Voronoi-Fresnel phase

doi:10.1364/OE.475004

CASIA OpenIR > 多模态人工智能系统全国重点实验室 > 三维可视计算

	Diffractive lensless imaging with optimized Voronoi-Fresnel phase
	Fu, Qiang 1; Yan, Dong-ming2,3 ; Heidrich, Wolfgang 1
发表期刊	OPTICS EXPRESS
ISSN	1094-4087
	2022-12-05
卷号	30 期号:25 页码:45807-45823
通讯作者	Fu, Qiang(qiang.fu@kaust.edu.sa)
摘要	Lensless cameras are a class of imaging devices that shrink the physical dimensions to the very close vicinity of the image sensor by replacing conventional compound lenses with integrated flat optics and computational algorithms. Here we report a diffractive lensless camera with spatially-coded Voronoi-Fresnel phase to achieve superior image quality. We propose a design principle of maximizing the acquired information in optics to facilitate the computational reconstruction. By introducing an easy-to-optimize Fourier domain metric, Modulation Transfer Function volume (MTFv), which is related to the Strehl ratio, we devise an optimization framework to guide the optimization of the diffractive optical element. The resulting Voronoi-Fresnel phase features an irregular array of quasi-Centroidal Voronoi cells containing a base first-order Fresnel phase function. We demonstrate and verify the imaging performance for photography applications with a prototype Voronoi-Fresnel lensless camera on a 1.6-megapixel image sensor in various illumination conditions. Results show that the proposed design outperforms existing lensless cameras, and could benefit the development of compact imaging systems that work in extreme physical conditions. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
DOI	10.1364/OE.475004
关键词[WOS]	COMPOUND EYE
收录类别	SCI
语种	英语
资助项目	King Abdullah University of Science and Technology ; National Natural Science Foundation of China[62172415] ; National Key Research and Development Program of China[2019YFB2204104]
项目资助者	King Abdullah University of Science and Technology ; National Natural Science Foundation of China ; National Key Research and Development Program of China
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000914933300002
出版者	Optica Publishing Group
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/51372
专题	多模态人工智能系统全国重点实验室_三维可视计算
通讯作者	Fu, Qiang
作者单位	1.King Abdullah Univ Sci & Technol KAUST, Thuwal 239556900, Saudi Arabia 2.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit NLPR, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch AI, Beijing 101408, Peoples R China
推荐引用方式 GB/T 7714	Fu, Qiang,Yan, Dong-ming,Heidrich, Wolfgang. Diffractive lensless imaging with optimized Voronoi-Fresnel phase[J]. OPTICS EXPRESS,2022,30(25):45807-45823.
APA	Fu, Qiang,Yan, Dong-ming,&Heidrich, Wolfgang.(2022).Diffractive lensless imaging with optimized Voronoi-Fresnel phase.OPTICS EXPRESS,30(25),45807-45823.
MLA	Fu, Qiang,et al."Diffractive lensless imaging with optimized Voronoi-Fresnel phase".OPTICS EXPRESS 30.25(2022):45807-45823.