Optimization of Sampling Mode in Macro Fourier Ptychography Imaging Based on Energy Distribution

被引:0
|
作者
Jiang, Runbo [1 ,2 ,3 ]
Shi, Dongfeng [1 ,2 ]
Wang, Yingjian [1 ,2 ]
机构
[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei 230031, Peoples R China
[2] Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China
[3] Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China
关键词
fourier ptychography; pre-sampling; irregular sampling; non-uniform sampling; energy distribution; PHASE RETRIEVAL; RECONSTRUCTION; ILLUMINATION; FIELD; RECOVERY; MODULUS; PATTERN; OBJECT;
D O I
10.3390/photonics10030321
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Fourier ptychography imaging technology is a method developed in recent years to achieve high-resolution imaging. In the traditional macro Fourier ptychography technology, the scanning method when the camera captures low-resolution images mostly uses the rectangular linear grid format. These acquired images contain a small amount of complementary information, and a large number of low-resolution images are needed to achieve high-resolution imaging. Redundant measurements will extend the sampling and reconstruction time, and require more computing resources. In this paper, we propose to obtain the target image spectral energy distribution by pre-sampling. And according to the energy distribution, we use irregular and non-uniform sampling modes to restore the target image. With the same number of samples and same reconstruction time, higher resolution imaging can be achieved compared with traditional methods. Simulation and experimental studies are carried out in this paper, and the results confirm the effectiveness of the proposed methods. Compared with the traditional sampling mode, the two sampling modes proposed in this paper increase the resolution from 4.49 lp/mm to 5.66 lp/mm and 5.04 lp/mm respectively.
引用
收藏
页数:14
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