Extended depth-resolved imaging through a thin scattering medium with PSF manipulation.
Extended depth-resolved imaging through a thin scattering medium with PSF manipulation.
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通过 PSF 操作通过薄散射介质扩展深度分辨成像
DOI：
10.1038/s41598-018-22966-7
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发表时间：
2018-03-15
影响因子：
4.6
通讯作者：
Zhou J
中科院分区：
文献类型：
--
作者：
Xie X;Zhuang H;He H;Xu X;Liang H;Liu Y;Zhou J
人类视觉化图像的能力通常受到光学散射的阻碍。近年来的广泛研究使透过混浊介质的成像技术发展到了可以在散射介质后真实的恢复彩色图像的现实。现在最大的挑战是恢复具有深度分辨能力的大视场中的物体。本文在现有研究成果的基础上，系统地研究了不同平面上物体产生的散斑之间的物理关系。通过操纵给定的单点扩散函数，通过薄散射介质的深度分辨成像可以扩展到原始景深（DOF）之外。对标准散射介质的实验测试表明，自由度可以扩展到5倍，并描述了物理机制。这种扩展的自由度有利于通过散射环境进行三维成像，有望在科学、技术、生物医学、安全和国防等领域有重要的应用。
Human ability to visualize an image is usually hindered by optical scattering. Recent extensive studies have promoted imaging technique through turbid materials to a reality where color image can be restored behind scattering media in real time. The big challenge now is to recover objects in a large field of view with depth resolving ability. Based on the existing research results, we systematically study the physical relationship between speckles generated from objects at different planes. By manipulating a given single point spread function, depth-resolved imaging through a thin scattering medium can be extended beyond the original depth of field (DOF). Experimental testing of standard scattering media shows that the DOF can be extended up to 5 times and the physical mechanism is depicted. This extended DOF is benefit to 3D imaging through scattering environment, and it is expected to have important applications in science, technology, bio-medical, security and defense.
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