Results 61 to 70 of about 230,662 (251)

Pixel-wise programmability enables dynamic high-SNR cameras for high-speed microscopy

open access: yesNature Communications
High-speed wide-field fluorescence microscopy has the potential to capture biological processes with exceptional spatiotemporal resolution. However, conventional cameras suffer from low signal-to-noise ratio at high frame rates, limiting their ability to
Jie Zhang   +12 more
doaj   +1 more source

Research on an SICM Scanning Image Resolution Enhancement Algorithm

open access: yesSensors
Scanning ion conductance microscopy (SICM) enables the non-invasive three-dimensional imaging of live cells and other structures in physiological environments.
Zhenhua Quan   +4 more
doaj   +1 more source

Statistical resolution analysis of microwave computational imaging

open access: yesElectronics Letters
This letter presents a model based on the Cramér–Rao bound theory for calculating the theoretical lower limit of imaging resolution of microwave computational imaging aided by re‐configurable metasurface.
Jinyu Zhang   +5 more
doaj   +1 more source

Adaptive Weighted Damage Imaging of Lamb Waves Based on Deep Learning

open access: yesIEEE Access
The damage imaging method based on Lamb wave beamforming has been widely used in the field of SHM. The DAS method has a high imaging efficiency, but its ability to suppress interference signals is weak, resulting in low imaging resolution and signal-to ...
Ronghe Shen   +6 more
doaj   +1 more source

Diffusion Tensor Tractography of the Brainstem Pyramidal Tract: A Study on the Optimal Reduction Factor in Parallel Imaging

open access: yes대한영상의학회지, 2016
Purpose Parallel imaging mitigates susceptibility artifacts that can adversely affect diffusion tensor tractography (DTT) of the pons depending on the reduction (R) factor. We aimed to find the optimal R factor for DTT of the pons that would allow us to
Yun Jung Bae   +4 more
doaj   +1 more source

Methods for voltage-sensitive dye imaging of rat cortical activity with high signal-to-noise ratio.

open access: yesJournal of Neurophysiology, 2007
We describe methods to achieve high sensitivity in voltage-sensitive dye (VSD) imaging from rat barrel and visual cortices in vivo with the use of a blue dye RH1691 and a high dynamic range imaging device (photodiode array).
Michael T. Lippert   +4 more
semanticscholar   +1 more source

Inverse Synthetic Aperture Radar Imaging of Space Targets Using Wideband Pseudo-Noise Signals with Low Peak-to-Average Power Ratio

open access: yesRemote Sensing
With the number of new satellites increasing dramatically, comprehensive space surveillance is becoming increasingly important. Therefore, high-resolution inverse synthetic aperture radar (ISAR) imaging of satellites can provide an in-situ assessment of ...
Simon Anger   +3 more
doaj   +1 more source

Signal-to-noise ratio in x ray dark-field imaging using a grating interferometer

open access: yes, 2011
In this work, we report an analytical and experimental investigation of the signal-to-noise ratio for a recently developed method called x ray dark-field imaging.
M. Chabior   +5 more
semanticscholar   +1 more source

Ghost imaging in reflection: resolution, contrast, and signal-to-noise ratio

open access: yesOptical Engineering + Applications, 2010
Ghost imaging is a transverse imaging technique that relies on the correlation between a pair of light fields, one that has interacted with the object to be imaged and one that has not.
N. Hardy, J. Shapiro
semanticscholar   +1 more source

A new local structural similarity fusion-based thresholding method for homomorphic ultrasound image despeckling in NSCT domain

open access: yesJournal of King Saud University: Computer and Information Sciences, 2023
Ultrasound is a diagnostic imaging technique to detect various illnesses related to the body's internal organs. It is a non-invasive, safe, cost-effective, and simple imaging modality that uses high-frequency sound waves and their reflection from ...
Prabhishek Singh   +4 more
doaj  

Home - About - Disclaimer - Privacy