Results 31 to 40 of about 142,258 (356)

Arginine-enriched mixed-charge domains provide cohesion for nuclear speckle condensation

open access: yesbioRxiv, 2019
Low-complexity protein domains promote the formation of various biomolecular condensates. However, in many cases, the precise sequence features governing condensate formation and identity remain unclear.
Jamie A. Greig   +6 more
semanticscholar   +1 more source

SpeckleGAN: a generative adversarial network with an adaptive speckle layer to augment limited training data for ultrasound image processing

open access: yesInternational Journal of Computer Assisted Radiology and Surgery, 2020
Purpose In the field of medical image analysis, deep learning methods gained huge attention over the last years. This can be explained by their often improved performance compared to classic explicit algorithms.
L. Bargsten, A. Schlaefer
semanticscholar   +1 more source

Single-Shot Structured Light Sensor for 3D Dense and Dynamic Reconstruction

open access: yesSensors, 2020
Structured light (SL) has a trade-off between acquisition time and spatial resolution. Temporally coded SL can produce a 3D reconstruction with high density, yet it is not applicable to dynamic reconstruction.
Feifei Gu, Zhan Song, Zilong Zhao
doaj   +1 more source

Tyramide signal amplification mass spectrometry (TSA-MS) ratio identifies nuclear speckle proteins

open access: yesJournal of Cell Biology, 2020
Dopie et al. apply TSA-MS ratio, an approach that compares the abundance of proteins in nuclear speckles with centromeres to reduce nonspecific background, and show that MFAP1 levels modulate nuclear speckle size and MFAP1 is recruited early to reforming
Joseph Dopie   +3 more
semanticscholar   +1 more source

Demonstration of a Speckle Based Sensing with Pulse-Doppler Radar for Vibration Detection

open access: yesSensors, 2018
In previous works, an optical technique for extraction and separation of remote static vibrations has been demonstrated. In this paper, we will describe an approach in which RF speckle movement is used to extract remote vibrations of a static target. The
Nisan Ozana   +6 more
doaj   +1 more source

Optical Energy Variability Induced by Speckle: The Cases of MERLIN and CHARM-F IPDA Lidar

open access: yesAtmosphere, 2019
In the context of the FrenchGerman space lidar mission MERLIN (MEthane Remote LIdar missioN) dedicated to the determination of the atmospheric methane content, an end-to-end mission simulator is being developed.
Vincent Cassé   +4 more
doaj   +1 more source

Beamforming and Speckle Reduction Using Neural Networks

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2019
With traditional beamforming methods, ultrasound B-mode images contain speckle noise caused by the random interference of subresolution scatterers. In this paper, we present a framework for using neural networks to beamform ultrasound channel signals ...
D. Hyun   +3 more
semanticscholar   +1 more source

Ten Years of Speckle Interferometry at SOAR [PDF]

open access: yes, 2018
Since 2007, close binary and multiple stars are observed by speckle interferometry at the 4.1 m Southern Astrophysical Research (SOAR) telescope. The HRCam instrument, observing strategy and planning, data processing and calibration methods, developed ...
A. Tokovinin
semanticscholar   +1 more source

SAR Image Despeckle With CNN Using a Novel Logarithmic Discrete Cosine Transform-Based Loss

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The coherent nature of imaging in synthetic aperture radar (SAR) inevitably gives rise to speckle noise, a challenge exacerbated by the constrained bandwidth and limited look angles.
Ammar Saleem   +2 more
doaj   +1 more source

Photon-Counting Security Tagging and Verification Using Optically Encoded QR Codes

open access: yesIEEE Photonics Journal, 2014
We propose an optical security method for object authentication using photon-counting encryption implemented with phase encoded QR codes. By combining the full phase double-random-phase encryption with photon-counting imaging method and applying an ...
A. Markman, B. Javidi, M. Tehranipoor
doaj   +1 more source

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