Extended depth-resolved imaging through a thin scattering medium with PSF manipulation
TLDR
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) and it is expected to have important applications in science, technology, bio-medical, security and defense.Abstract:
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.read more
Citations
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Imaging through scattering layers exceeding memory effect range by exploiting prior information
TL;DR: This work experimentally demonstrates that given a known target, or even a light point-source, the other unknown object beyond the ME can be determined with only a single-shot camera image, even if the information of targets are mixed in the speckle pattern.
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On-chip fluorescence microscopy with a random microlens diffuser
TL;DR: An on-chip, widefield fluorescence microscope is presented, which consists of a diffuser placed a few millimeters away from a traditional image sensor, enabling refocusability in post-processing and three-dimensional imaging of sparse samples from a single acquisition.
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Computational complex optical field imaging using a designed metasurface diffuser
TL;DR: This work experimentally demonstrates an imaging system with the ability to retrieve complex field values using a MD and the speckle-correlation scattering matrix method, and explores the mathematical properties of the MD transmission matrix such as its correlation and singular value spectrum to expand the understanding about both MDs.
Journal ArticleDOI
Prior-information-free single-shot scattering imaging beyond the memory effect
TL;DR: A prior-information-free single-shot scattering imaging method to exceed the ME range via Fourier spectrum guessing and iterative energy constrained compensation that can be reconstructed via a single shot.
Journal ArticleDOI
Imaging of objects through a thin scattering layer using a spectrally and spatially separated reference.
Xiaoqing Xu,Xiangsheng Xie,Abhilash Thendiyamma,Huichang Zhuang,Junpeng Xie,Yikun Liu,Jianying Zhou,Allard Mosk +7 more
TL;DR: In this paper, reference objects that are both spatially and spectrally separated from the object of interest can be used to obtain an approximation of the point spread function, which is then deconvolved to produce a clear and sharp image of the object on a speckle-like background of low intensity.
References
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Controlling waves in space and time for imaging and focusing in complex media
TL;DR: In this article, the authors used strongly scattering materials to focus, shape and compress waves by controlling the many degrees of freedom in the incident waves in complex media such as white paint and biological tissue.
Book
Speckle Phenomena in Optics: Theory and Applications
Abstract: Comprehending as skillfully as conformity even more than further will allow each success. next to, the revelation as with ease as keenness of this speckle phenomena in optics theory and the applications can be taken as competently as picked to act. Better to search instead for a particular book title, author, or synopsis. The Advanced Search lets you narrow the results by language and file extension (e.g. PDF, EPUB, MOBI, DOC, etc).
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Non-invasive imaging through opaque scattering layers
Jacopo Bertolotti,Jacopo Bertolotti,Elbert G. van Putten,Elbert G. van Putten,Christian Blum,Ad Lagendijk,Ad Lagendijk,Willem L. Vos,Allard Mosk +8 more
TL;DR: An optical method is reported that allows non-invasive imaging of a fluorescent object that is completely hidden behind an opaque scattering layer and can be generalized to other contrast mechanisms and geometries.
Journal ArticleDOI
Non-invasive single-shot imaging through scattering layers and around corners via speckle correlations
TL;DR: In this article, a single high-resolution image of the scattered light, captured with a standard camera, encodes sufficient information to image through visually opaque layers and around corners with diffraction-limited resolution.
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