Robust 4D flow denoising using divergence‐free wavelet transform

F Ong, M Uecker, U Tariq, A Hsiao… - Magnetic resonance …, 2015 - Wiley Online Library
Purpose To investigate four‐dimensional flow denoising using the divergence‐free wavelet
(DFW) transform and compare its performance with existing techniques. Theory and …

S3: Side-channel attack on stylus pencil through sensors

H Farrukh, T Yang, H Xu, Y Yin, H Wang… - Proceedings of the ACM …, 2021 - dl.acm.org
With smart devices being an essential part of our everyday lives, unsupervised access to the
mobile sensors' data can result in a multitude of side-channel attacks. In this paper, we study …

A survey of cardiac 4D PC‐MRI data processing

B Köhler, S Born, RFP van Pelt… - Computer Graphics …, 2017 - Wiley Online Library
Cardiac four‐dimensional phase‐contrast magnetic resonance imaging (4D PC‐MRI)
acquisitions have gained increasing clinical interest in recent years. They allow to non …

Self-similar prior and wavelet bases for hidden incompressible turbulent motion

P Héas, F Lavancier, S Kadri-Harouna - SIAM Journal on Imaging Sciences, 2014 - SIAM
This work is concerned with the ill-posed inverse problem of estimating turbulent flows from
the observation of an image sequence. From a Bayesian perspective, a divergence-free …

Improved variational denoising of flow fields with application to phase-contrast MRI data

E Bostan, S Lefkimmiatis, O Vardoulis… - IEEE Signal …, 2014 - ieeexplore.ieee.org
We propose a new variational framework for the problem of reconstructing flow fields from
noisy measurements. The formalism is based on regularizers penalizing the singular values …

3D wind field profiles from hyperspectral sounders: revisiting optic-flow from a meteorological perspective

P Héas, O Hautecoeur, R Borde - Physica Scripta, 2023 - iopscience.iop.org
In this work, we present an efficient optic flow algorithm for the extraction of vertically
resolved 3D atmospheric motion vector (AMV) fields from incomplete hyperspectral image …

Chilled sampling for uncertainty quantification: a motivation from a meteorological inverse problem

P Héas, F Cérou, M Rousset - Inverse Problems, 2023 - iopscience.iop.org
Atmospheric motion vectors (AMVs) extracted from satellite imagery are the only wind
observations with good global coverage. They are important features for feeding numerical …

Model-based iterative reconstruction of magnetization using vector field electron tomography

KA Mohan, KC Prabhat, C Phatak… - IEEE Transactions …, 2018 - ieeexplore.ieee.org
Vector field electron tomography (VFET) is extensively used for three-dimensional (3-D)
imaging of magnetic materials at nanometer resolutions. The conventional approach is to …

Spatio-temporal regularization of flow-fields

E Bostan, O Vardoulis, D Piccini… - 2013 IEEE 10th …, 2013 - ieeexplore.ieee.org
We introduce a novel variational framework for the regularized reconstruction of time-
resolved volumetric flow fields. Our objective functional takes the physical characteristics of …

L1-regularized reconstruction for traction force microscopy

A Suñé-Auñón, A Jorge-Peñas… - 2016 IEEE 13th …, 2016 - ieeexplore.ieee.org
Traction Force Microscopy (TFM) is a technique widely used to recover cellular tractions
from the deformation they cause in their surrounding substrate. Traction recovery is an ill …