Results 31 to 40 of about 1,826,590 (358)
Phase Reconstruction with Iterated Hilbert Transforms [PDF]
, 2021 We present a study dealing with a novel phase reconstruction method based on iterated Hilbert transform embeddings. We show results for the Stuart-Landau oscillator observed by generic observables. The benefits for reconstruction of the phase response curve a presented and the method is applied in a setting where the observed system is pertubred by ...
Erik Gengel +3 more
openaire +3 more sources
Increasing the Performance of the Iterative Computed Tomography Image Reconstruction Algorithms
مجلة النهرين للعلوم الهندسية, 2020 Computed tomography (CT) imaging is an important diagnostic tool. CT imaging facilitates the internal rendering of a scanned object by measuring the attenuation of beams of X-ray radiation.
Shimaa Abdulsalam Khazal +1 more
doaj +1 more source
Iterative reconstruction excursions for Baryon Acoustic Oscillations and beyond [PDF]
Monthly Notices of the Royal Astronomical Society, 2022, 2021 The density field reconstruction technique has been widely used for recovering the Baryon Acoustic Oscillation (BAO) feature in galaxy surveys that has been degraded due to nonlinearities. Recent studies advocated adopting iterative steps to improve the recovery much beyond that of the standard technique.
arxiv +1 more source
Model-Driven Enhanced Analytic Learned Iterative Shrinkage Threshold Algorithm
IEEE Access, 2022 The application of deep learning in compressed sensing reconstruction has achieved some excellent results. The deep neural network based on iterative algorithm can not only reflect the excellent performance of deep learning, but also reflect the ...
Jun Li +4 more
doaj +1 more source
Modeling iterative reconstruction and displacement field in the large scale structure [PDF]
, 2021 The next generation of galaxy surveys like the Dark Energy Spectroscopic Instrument (DESI) and Euclid will provide datasets orders of magnitude larger than anything available to date. Our ability to model nonlinear effects in late time matter perturbations will be a key to unlock the full potential of these datasets, and the area of initial condition ...
arxiv +1 more source
Definitions, 2020 Parallel MRI techniques utilize the inherent encoding effect of receiver coil sensitivity for complementing gradient-driven Fourier encoding. As a consequence of this hybrid encoding approach, parallel techniques require advanced reconstruction ...
K. Pruessmann
semanticscholar +1 more source
An Accelerated Iterative Cone Beam Computed Tomography Image Reconstruction Approach
مجلة النهرين للعلوم الهندسية, 2019 Cone-beam computed tomography (CBCT) is an indispensable method that reconstructs three dimensional (3D) images. CBCT employs a mathematical technique of reconstruction, which reveals the anatomy of the patient’s body through the measurements of ...
Shimaa Abdulsalam Khazal +1 more
doaj +1 more source
Fast Parallel Imaging Reconstruction Method Based on SIDWT and Iterative Self-Consistency
Shanghai Jiaotong Daxue xuebao, 2023 To improve the reconstruction speed of parallel magnetic resonance imaging, an efficient reconstruction method named fSIDWT-SPIRiT is proposed based on shift-invariant discrete wavelets transform (SIDWT) and the iterative self-consistent parallel imaging
DUAN Jizhong, QIAN Qingqing
doaj +1 more source
Approximate Message Passing Algorithm for Nonconvex Regularization
IEEE Access, 2019 In this paper, we study the sparse signal reconstruction with nonconvex regularization, mainly focusing on two popular nonconvex regularization methods, minimax concave penalty (MCP) and smoothly clipped absolute deviation (SCAD).
Hui Zhang +4 more
doaj +1 more source
The Impact of Iterative Reconstruction on Computed Tomography Radiation Dosimetry: Evaluation in a Routine Clinical Setting. [PDF]
PLoS ONE, 2015 To evaluate the effect of introduction of iterative reconstruction as a mandated software upgrade on radiation dosimetry in routine clinical practice over a range of computed tomography examinations.Random samples of scanning data were extracted from a ...
Rachael E Moorin +3 more
doaj +1 more source