Single-shot large field of view imaging with scattering media by spatial demultiplexing

Tang Dongliang; Sahoo Sujit Kumar; Vinh Tran; Cuong Dang

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Single-shot large field of view imaging with scattering media by spatial demultiplexing

机译：单次拍摄的大景观与空间解复用与散射介质的成像

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Benefiting from the memory effect (ME) for speckle intensity correlations, only one single-shot speckle pattern can be used for the high-quality recovery of objects. However, ME gives a restriction to the field of view (FOV) for imaging with scattering media. Objects beyond the ME region cannot be recovered and produce unwanted speckle patterns, which cause reduction in the speckle contrast and recovery quality. Nevertheless, all the spatial information from a large object is embedded in a single speckle image. Here, we extract the spatial information from these unavoidable speckle patterns and enlarge the FOV of the imaging system with scattering media. Regional point spreading functions, which are fixed and only need to be recorded once for all-time use, are employed to recover corresponding spatial regions of an object by deconvolution. Then, an automatic weighted averaging in an iterative process is performed to obtain the object with significantly enlarged FOV. Our results present an important advancement of imaging techniques with strongly scattering media. (C) 2018 Optical Society of America

机译：从内存效果（ME）中受益于散斑强度相关性，只能使用一个单次散斑图案来用于对象的高质量恢复。然而，我对散射介质进行成像的视野（FOV）提供了限制。无法恢复ME区域之外的对象并产生不需要的散斑图案，这导致斑点对比度和恢复质量降低。然而，来自大物体的所有空间信息嵌入在单个散斑图像中。这里，我们从这些不可避免的散斑图案中提取空间信息，并利用散射介质扩大成像系统的FOV。区域点扩散功能，其固定并仅需要记录一次，用于举起一次使用，以通过解卷积恢复物体的相应空间区域。然后，执行迭代过程中的自动加权平均以获得具有显着放大的对象。我们的结果显示了具有强烈散射介质的成像技术的重要进步。（c）2018年光学学会

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《Applied optics》 |2018年第26期|共6页
作者
Tang Dongliang; Sahoo Sujit Kumar; Vinh Tran; Cuong Dang;
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Nanyang Technol Univ Singapore TPI Sch Elect &

Elect Engn Ctr OptoElect &

Biophoton COEB 50 Nanyang Ave Singapore 639798 Singapore;

Nanyang Technol Univ Singapore TPI Sch Elect &

Elect Engn Ctr OptoElect &

Biophoton COEB 50 Nanyang Ave Singapore 639798 Singapore;

Nanyang Technol Univ Singapore TPI Sch Elect &

Elect Engn Ctr OptoElect &

Biophoton COEB 50 Nanyang Ave Singapore 639798 Singapore;

Nanyang Technol Univ Singapore TPI Sch Elect &

Elect Engn Ctr OptoElect &

Biophoton COEB 50 Nanyang Ave Singapore 639798 Singapore;

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Single-shot large field of view imaging with scattering media by spatial demultiplexing

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