scholarly journals Efficient measurements of the diameter of the human artery using super-resolution imaging technique based on multi-scale wavelet analysis

2013 ◽  
Author(s):  
S. Mekaoui ◽  
S. Tchoketchkebir ◽  
K. Ghoumid
Keyword(s):  
Wavelet Analysis ◽  
Imaging Technique ◽  
Super Resolution ◽  
Human Artery ◽  
Multi Scale ◽  
Resolution Imaging

scholarly journals MDAN-UNet: Multi-Scale and Dual Attention Enhanced Nested U-Net Architecture for Segmentation of Optical Coherence Tomography Images

Algorithms ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 60 ◽  
Author(s):  
Wen Liu ◽  
Yankui Sun ◽  
Qingge Ji
Keyword(s):  
Optical Coherence Tomography ◽  
State Of The Art ◽  
Imaging Technique ◽  
Optical Coherence ◽  
Convolutional Network ◽  
Multi Scale ◽  
Segmentation Methods ◽  
Benchmark Datasets ◽  
Resolution Imaging ◽  
Layer Segmentation

Optical coherence tomography (OCT) is an optical high-resolution imaging technique for ophthalmic diagnosis. In this paper, we take advantages of multi-scale input, multi-scale side output and dual attention mechanism and present an enhanced nested U-Net architecture (MDAN-UNet), a new powerful fully convolutional network for automatic end-to-end segmentation of OCT images. We have evaluated two versions of MDAN-UNet (MDAN-UNet-16 and MDAN-UNet-32) on two publicly available benchmark datasets which are the Duke Diabetic Macular Edema (DME) dataset and the RETOUCH dataset, in comparison with other state-of-the-art segmentation methods. Our experiment demonstrates that MDAN-UNet-32 achieved the best performance, followed by MDAN-UNet-16 with smaller parameter, for multi-layer segmentation and multi-fluid segmentation respectively.

scholarly journals On super-resolution imaging as a multiparameter estimation problem

2017 ◽  
Vol 15 (08) ◽  
pp. 1740005 ◽  
Author(s):  
Andrzej Chrostowski ◽  
Rafał Demkowicz-Dobrzański ◽  
Marcin Jarzyna ◽  
Konrad Banaszek
Keyword(s):  
Phase Shift ◽  
Light Source ◽  
Imaging Technique ◽  
Super Resolution ◽  
Estimation Problem ◽  
Joint Estimation ◽  
Spatial Extent ◽  
Resolution Imaging

We consider the problem of characterizing the spatial extent of a composite light source using the super-resolution imaging technique based on mode demultiplexing when the centroid of the source is not known precisely. We show that the essential features of this problem can be mapped onto a simple qubit model for joint estimation of a phase shift and a dephasing strength.

scholarly journals From 2D to 3D super-resolution imaging through glass microspheres -INVITED

2020 ◽  
Vol 238 ◽  
pp. 06002
Author(s):  
Stephane Perrin ◽  
Sylvain Lecler ◽  
Paul Montgomery
Keyword(s):  
3D Reconstruction ◽  
Imaging Technique ◽  
Super Resolution ◽  
Diffraction Limit ◽  
Label Free ◽  
Magnification Factor ◽  
Glass Microspheres ◽  
Full Field ◽  
Resolution Imaging ◽  
2D To 3D

Microsphere-assisted microscopy is a new imaging technique which allows the diffraction limit to be overcome using transparent microspheres. It makes it possible to reach a resolution of up to 100 nm in air while being label-free and full-field. An overview of the imaging technique is presented showing the influence of the photonic jet on the image nature and the unconventional behaviour of the magnification factor. Moreover, interferometry through microspheres is demonstrated for the 3D reconstruction of nanoelements.

scholarly journals Recent Progress in the Correlative Structured Illumination Microscopy

Chemosensors ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 364
Author(s):  
Meiting Wang ◽  
Jiajie Chen ◽  
Lei Wang ◽  
Xiaomin Zheng ◽  
Jie Zhou ◽  
...  
Keyword(s):  
High Frequency ◽  
Optical Transmission ◽  
Imaging Technique ◽  
Super Resolution ◽  
Diffraction Limit ◽  
Optical Diffraction ◽  
Structured Illumination ◽  
Structured Illumination Microscopy ◽  
Recent Developments ◽  
Resolution Imaging

The super-resolution imaging technique of structured illumination microscopy (SIM) enables the mixing of high-frequency information into the optical transmission domain via light-source modulation, thus breaking the optical diffraction limit. Correlative SIM, which combines other techniques with SIM, offers more versatility or higher imaging resolution than traditional SIM. In this review, we first briefly introduce the imaging mechanism and development trends of conventional SIM. Then, the principles and recent developments of correlative SIM techniques are reviewed. Finally, the future development directions of SIM and its correlative microscopies are presented.

Fast Super-Resolution Imaging Technique and Immediate Early Nanostructure Capturing by a Photoconvertible Fluorescent Protein

Nano Letters ◽  
2019 ◽  
Vol 20 (4) ◽  
pp. 2197-2208 ◽  
Author(s):  
Mingshu Zhang ◽  
Zhifei Fu ◽  
Changqing Li ◽  
Anyuan Liu ◽  
Dingming Peng ◽  
...  
Keyword(s):  
Fluorescent Protein ◽  
Imaging Technique ◽  
Super Resolution ◽  
Immediate Early ◽  
Resolution Imaging

scholarly journals Cell scientist to watch – Verena Ruprecht

2021 ◽  
Vol 134 (14) ◽  
Keyword(s):  
Single Molecule ◽  
Super Resolution ◽  
Young Investigator ◽  
Collaborative Project ◽  
Johannes Kepler ◽  
Multi Scale ◽  
Amoeboid Cell ◽  
Independent Laboratory ◽  
Resolution Imaging ◽  
Genomic Regulation

ABSTRACT Verena Ruprecht received her PhD in Biophysics from the Johannes Kepler University in 2010 for her work on developing single-molecule super-resolution imaging tools in the lab of Gerhard Schütz. Following a research visit in Didier Marguet's lab at the Centre d'Immunologie de Marseille-Luminy (CIML) in France, she moved to the Institute of Science and Technology (IST) in Austria for a postdoc, working jointly with Carl-Philipp Heisenberg and Michael Sixt. There, she discovered a unique amoeboid cell migration mode in early zebrafish embryos, termed stable-bleb migration. Verena started her independent laboratory at the Centre for Genomic Regulation (CRG) in Barcelona, Spain, in September 2016. Her group combines genetic and biophysical methods with multi-scale imaging and mathematical modelling to study cellular dynamics in embryo development. In 2020, Verena was selected as an EMBO Young Investigator and in the same year awarded an HFSP Young Investigator Grant for a collaborative project to study the biophysics of zebrafish fertilization.

Advantages of microsphere-assisted super-resolution imaging technique over solid immersion lens and confocal microscopies

2014 ◽  
Vol 104 (6) ◽  
pp. 061117 ◽  
Author(s):  
Arash Darafsheh ◽  
Nicholaos I. Limberopoulos ◽  
John S. Derov ◽  
Dennis E. Walker ◽  
Vasily N. Astratov
Keyword(s):  
Imaging Technique ◽  
Super Resolution ◽  
Solid Immersion Lens ◽  
Resolution Imaging
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