Expansion of the FOV in speckle autocorrelation imaging by spatial filtering

Chen Meijun; Liu Honglin; Liu Zhentao; Lai Puxiang; Han Shensheng

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Expansion of the FOV in speckle autocorrelation imaging by spatial filtering

机译：通过空间滤波扩展散斑自相关成像中的FOV

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Optical imaging through inhomogeneous media based on autocorrelations suffers from a limited field of view (FOV), since the optical memory effect (ME) of a scattering medium has its inherent angular extent. Here we successfully expand the angular ME range by exploiting a spatial filtering technique to select low-frequency components, mainly ballistic light and less scattered light, thereby increasing the FOV of the speckle autocorrelation imaging. Both a simulation and experimental verifications are presented. This technique, which is not limited to the discussed 4f structure, can provide a guideline for the design of an optical system to image through scattering media. (C) 2019 Optical Society of America

机译：通过基于自相关的非均匀介质的光学成像遭受有限的视野（FOV），因为散射介质的光学存储器效果（ME）具有其固有的角度范围。在这里，我们通过利用空间滤波技术来选择低频分量，主要是弹道光和散射光，从而增加斑点自相关成像的FOV。展示了模拟和实验验证。该技术不限于所讨论的4F结构，可以通过散射介质提供光学系统的设计指导。（c）2019年光学学会

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《Optics Letters》 |2019年第24期|共4页
作者
Chen Meijun; Liu Honglin; Liu Zhentao; Lai Puxiang; Han Shensheng;
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作者单位

Chinese Acad Sci Shanghai Inst Opt &

Fine Mech Key Lab Quantum Opt Shanghai 201800 Peoples R China;

Chinese Acad Sci Shanghai Inst Opt &

Fine Mech Key Lab Quantum Opt Shanghai 201800 Peoples R China;

Chinese Acad Sci Shanghai Inst Opt &

Fine Mech Key Lab Quantum Opt Shanghai 201800 Peoples R China;

Hong Kong Polytech Univ Dept Biomed Engn Hong Kong Peoples R China;

Chinese Acad Sci Shanghai Inst Opt &

Fine Mech Key Lab Quantum Opt Shanghai 201800 Peoples R China;

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正文语种 eng
中图分类计量学;光学;
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1. Expansion of the FOV in speckle autocorrelation imaging by spatial filtering [J] . Chen Meijun, Liu Honglin, Liu Zhentao, Optics Letters . 2019,第24期

机译：通过空间滤波扩展散斑自相关成像中的FOV
2. Combination of Spatial Domain Filters for Speckle Noise Reduction in Ultrasound Medical Images [J] . Garg Amit, Khandelwal Vineet Advances in Electrical and Electronic Engineering . 2018,第5期

机译：结合空间域滤波器降低超声医学图像中的斑点噪声
3. Quantitative measures of boundary and contrast enhancement in speckle reduction in ultrasonic B-mode images using spatial bessel filters [J] . Shankar P.M. Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on . 2009,第10期

机译：使用空间贝塞尔滤波器的超声B型图像斑点减少中边界和对比度增强的定量测量
4. Speckle filtering of ultrasound B-Scan Images - a comparative study between spatial and diffusion filters [C] . Sivakumar R., Gayathri M.K., Nedumaran D. 2010 IEEE Conference on Open Systems . 2010

机译：超声B扫描图像的斑点滤波-空间和扩散滤波器之间的比较研究
5. Behavioral specifications of network autocorrelation in migration modeling: An analysis of migration flows by spatial filtering. [D] . Chun, Yongwan. 2007

机译：迁移建模中网络自相关的行为规范：通过空间过滤对迁移流进行分析。
6. Cluster-based filtering framework for speckle reduction in OCT images [O] . M. Hossein Eybposh, Zahra Turani, Darius Mehregan, 2018

机译：基于群集的过滤框架用于减少OCT图像中的斑点
7. Modeling Spatial Autocorrelation in Spatial Interaction Data: A Comparison of Spatial Econometric and Spatial Filtering Specifications [O] . Fischer Manfred M., Griffith Daniel A. 2006

机译：空间交互数据中空间自相关的建模：空间计量经济学和空间过滤规范的比较

Expansion of the FOV in speckle autocorrelation imaging by spatial filtering

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