Publications related to Computing exact Fourier series coefficients of IC rectilinear polygons from low-resolution fast Fourier coefficients

Evaluation of time-frequency features as detectors of lack of balance due to tripping-like perturbations

Unbalancing events during gait can end up in falls and, thus, injury. Detecting events that could bring to fall and consequently activating fall prevention systems before the impact may help to mitigate related injuries. However, there is uncertainty about ...

IEEE2019

Stable Manifold for the Critical Non-Linear Wave Equation: A Fourier Theory Approach

Gérôme Graf

I will try to explain, without going into too much detail, how one can consider a non-linear wave equation as a dynamical system and what it brings to the study of its solutions. We begin by considering our model case, the non-linear Klein-Gordon equation ...

EPFL2019

A Physical Model of Nonstationary Blur in Ultrasound Imaging

Jean-Philippe Thiran, Yves Wiaux, Paul Hurley, Dimitris Perdios, Matthieu Martin Jean-André Simeoni, Marcel Arditi, Adrien Besson

While restoration methods have been extensively studied in ultrasound (US) imaging, only few recent works have focused on modeling and understanding the blur from a physical point of view even in simple configurations, such as lossless homogeneous media. D ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

Reduced Leakage Synchrophasor Estimation: Hilbert Transform Plus Interpolated DFT

Mario Paolone, Asja Derviskadic, Guglielmo Frigo

Synchrophasor estimation is typically performed by means of spectral analysis based on the discrete Fourier transform (DFT). Traditional DFT approaches, though, suffer from several uncertainty contributions due to the stationarity assumption, spectral leak ...

2018

Parallel Implementation Technique of Digital Equalizer for Ultra-High-Speed Wireline Receiver

Cosimo Aprile, Yusuf Leblebici, Alessandro Cevrero, Lukas Kull, Gain Kim, Ilter Ozkaya, Thomas Toifl

This paper presents a parallel implementation technique of digital equalizer for high-speed wireline serial link receiver (RX). In wireline RX, inter-symbol interference (ISI) is mitigated by continuous-time linear equalizer, and the remaining ISI is cance ...

2018

Combining Fourier Analysis And Machine Learning To Estimate The Shallow-Ground Thermal Diffusivity In Switzerland

Jean-Louis Scartezzini, Dan Assouline, Nahid Mohajeri Pour Rayeni

We propose a methodology combining physical modelling and machine learning (ML) to estimate the apparent ground thermal diffusivity at the scale of a country. Based on ground temperature time series at different depths, we estimate the diffusivity at 49 Sw ...

IEEE2018

Fast cross-correlation based wrist vein recognition algorithm with rotation and translation compensation

Sébastien Marcel, André Anjos, Teodors Eglitis

Most of the research on vein biometrics addresses the problems of either palm or finger vein recognition with a considerably smaller emphasis on wrist vein modality. This paper paves the way to a better understanding of capabilities and challenges in the f ...

2018

A non-stationary stochastic ensemble generator for radar rainfall fields based on the short-space Fourier transform

Nikola Besic, Urs Martin Germann, Daniele Nerini

In this paper we present a non-stationary stochastic generator for radar rainfall fields based on the short-space Fourier transform (SSFT). The statistical properties of rainfall fields often exhibit significant spatial heterogeneity due to variability in ...

Copernicus GmbH2017

On Short Sums Of Trace Functions

Philippe Michel, Chandra Sekhar Raju

We consider sums of oscillating functions on intervals in cyclic groups of size close to the square root of the size of the group. We first prove non-trivial estimates for intervals of length slightly larger than this square root (bridging the "Polya-Vinog ...

Annales Inst Fourier2017

An Adaptive Sublinear-Time Block Sparse Fourier Transform

Volkan Cevher, Mikhail Kapralov, Jonathan Mark Scarlett, Amir Zandieh

The problem of approximately computing the

k

dominant Fourier coefficients of a vector

X

quickly, and using few samples in time domain, is known as the Sparse Fourier Transform (sparse FFT) problem. A long line of work on the sparse FFT has resulted in ...

2017

Computing exact Fourier series coefficients of IC rectilinear polygons from low-resolution fast Fourier coefficients

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Evaluation of time-frequency features as detectors of lack of balance due to tripping-like perturbations

Stable Manifold for the Critical Non-Linear Wave Equation: A Fourier Theory Approach

A Physical Model of Nonstationary Blur in Ultrasound Imaging

Reduced Leakage Synchrophasor Estimation: Hilbert Transform Plus Interpolated DFT

Parallel Implementation Technique of Digital Equalizer for Ultra-High-Speed Wireline Receiver

Combining Fourier Analysis And Machine Learning To Estimate The Shallow-Ground Thermal Diffusivity In Switzerland

Fast cross-correlation based wrist vein recognition algorithm with rotation and translation compensation

A non-stationary stochastic ensemble generator for radar rainfall fields based on the short-space Fourier transform

On Short Sums Of Trace Functions

An Adaptive Sublinear-Time Block Sparse Fourier Transform

Reduced Leakage Synchrophasor Estimation: Hilbert Transform Plus Interpolated DFT

A non-stationary stochastic ensemble generator for radar rainfall fields based on the short-space Fourier transform

Combining Fourier Analysis And Machine Learning To Estimate The Shallow-Ground Thermal Diffusivity In Switzerland

A Physical Model of Nonstationary Blur in Ultrasound Imaging

Evaluation of time-frequency features as detectors of lack of balance due to tripping-like perturbations

Stable Manifold for the Critical Non-Linear Wave Equation: A Fourier Theory Approach

Parallel Implementation Technique of Digital Equalizer for Ultra-High-Speed Wireline Receiver

On Short Sums Of Trace Functions

Fast cross-correlation based wrist vein recognition algorithm with rotation and translation compensation

An Adaptive Sublinear-Time Block Sparse Fourier Transform