scholarly journals Super-resolution endoscopy for real-time wide-field imaging

2015 ◽  
Vol 23 (13) ◽  
pp. 16803 ◽  
Author(s):  
Feifei Wang ◽  
Hok Sum Sam Lai ◽  
Lianqing Liu ◽  
Pan Li ◽  
Haibo Yu ◽  
...  
Keyword(s):  
Real Time ◽  
Super Resolution ◽  
Wide Field ◽  
Field Imaging ◽  
Wide Field Imaging

scholarly journals Camera-based localization microscopy optimized with calibrated structured illumination

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Martin Schmidt ◽  
Adam C. Hundahl ◽  
Henrik Flyvbjerg ◽  
Rodolphe Marie ◽  
Kim I. Mortensen
Keyword(s):  
Data Analysis ◽  
Super Resolution ◽  
Wide Field ◽  
Structured Illumination ◽  
Uniform Illumination ◽  
Localization Microscopy ◽  
Localization And Tracking ◽  
Field Imaging ◽  
Wide Field Imaging ◽  
Localization Information

AbstractUntil very recently, super-resolution localization and tracking of fluorescent particles used camera-based wide-field imaging with uniform illumination. Then it was demonstrated that structured illuminations encode additional localization information in images. The first demonstration of this uses scanning and hence suffers from limited throughput. This limitation was mitigated by fusing camera-based localization with wide-field structured illumination. Current implementations, however, use effectively only half the localization information that they encode in images. Here we demonstrate how all of this information may be exploited by careful calibration of the structured illumination. Our approach achieves maximal resolution for given structured illumination, has a simple data analysis, and applies to any structured illumination in principle. We demonstrate this with an only slightly modified wide-field microscope. Our protocol should boost the emerging field of high-precision localization with structured illumination.

Multi-aperture super-resolution and wide-field imaging method using compressive coding

2017 ◽  
Vol 46 (8) ◽  
pp. 824001
Author(s):  
袁 影 Yuan Ying ◽  
王晓蕊 Wang Xiaorui ◽  
吴雄雄 Wu Xiongxiong ◽  
穆江浩 Mu Jianghao ◽  
张 艳 Zhang Yan
Keyword(s):  
Super Resolution ◽  
Imaging Method ◽  
Wide Field ◽  
Field Imaging ◽  
Wide Field Imaging

Design of a wide-field imaging optical system with super-resolution reconstruction

2015 ◽  
Author(s):  
Xiaopeng Shao ◽  
Jie Xu ◽  
Jiaoyang Wang ◽  
Xiaodong Chen ◽  
Rui Gong ◽  
...  
Keyword(s):  
Optical System ◽  
Super Resolution ◽  
Wide Field ◽  
Field Imaging ◽  
Wide Field Imaging

scholarly journals Direct wide-field radio imaging in real-time at high time resolution using antenna electric fields

2019 ◽  
Vol 491 (1) ◽  
pp. 254-263
Author(s):  
James Kent ◽  
Adam P Beardsley ◽  
Landman Bester ◽  
Steve F Gull ◽  
Bojan Nikolic ◽  
...  
Keyword(s):  
Electric Field ◽  
Real Time ◽  
Electric Fields ◽  
Imaging Method ◽  
Wide Field ◽  
Direct Imaging ◽  
Computational Performance ◽  
Radio Imaging ◽  
Field Imaging ◽  
Wide Field Imaging

ABSTRACT The recent demonstration of a real-time direct imaging radio interferometry correlator represents a new capability in radio astronomy. However, wide-field imaging with this method is challenging since wide-field effects and array non-coplanarity degrade image quality if not compensated for. Here, we present an alternative direct imaging correlation strategy using a direct Fourier transform (DFT), modelled as a linear operator facilitating a matrix multiplication between the DFT matrix and a vector of the electric fields from each antenna. This offers perfect correction for wide field and non-coplanarity effects. When implemented with data from the Long Wavelength Array (LWA), it offers comparable computational performance to previously demonstrated direct imaging techniques, despite having a theoretically higher floating point cost. It also has additional benefits, such as imaging sparse arrays and control over which sky coordinates are imaged, allowing variable pixel placement across an image. It is in practice a highly flexible and efficient method of direct radio imaging when implemented on suitable arrays. A functioning electric field direct imaging architecture using the DFT is presented, alongside an exploration of techniques for wide-field imaging similar to those in visibility-based imaging, and an explanation of why they do not fit well to imaging directly with the digitized electric field data. The DFT imaging method is demonstrated on real data from the LWA telescope, alongside a detailed performance analysis, as well as an exploration of its applicability to other arrays.

Integrated Raman spectroscopy and trimodal wide-field imaging techniques for real-time in vivo tissue Raman measurements at endoscopy

2009 ◽  
Vol 34 (6) ◽  
pp. 758 ◽  
Author(s):  
Zhiwei Huang ◽  
Seng Khoon Teh ◽  
Wei Zheng ◽  
Jianhua Mo ◽  
Kan Lin ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Real Time ◽  
Imaging Techniques ◽  
Wide Field ◽  
Field Imaging ◽  
Wide Field Imaging

scholarly journals Protocol for constructing an extensive cranial window utilizing a PEO-CYTOP nanosheet for in vivo wide-field imaging of the mouse brain

2021 ◽  
Vol 2 (2) ◽  
pp. 100542
Author(s):  
Taiga Takahashi ◽  
Hong Zhang ◽  
Kohei Otomo ◽  
Yosuke Okamura ◽  
Tomomi Nemoto
Keyword(s):  
Mouse Brain ◽  
Wide Field ◽  
Cranial Window ◽  
Field Imaging ◽  
Wide Field Imaging

scholarly journals The Virmos Project

1998 ◽  
Vol 11 (1) ◽  
pp. 492-492
Author(s):  
D. MacCagni ◽  
O. Le Fèvre ◽  
G. Vettolani ◽  
D. Mancini ◽  
J.P. Picat ◽  
...  
Keyword(s):  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Structure Evolution ◽  
Wide Field ◽  
Look Back ◽  
Field Imaging ◽  
Wide Field Imaging

Large and deep spectroscopic samples of galaxies are essential to study galaxies and large scale structure evolution out to look-back times ~ 10% the current age of the vmiverse. Keeping this scientific and observational goal in mind, we designed and are presently building two wide-field imaging spectrographs to be installed at the Nasmyth foci of the ESO-VLT Unit Telescopes 3 and 4.

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