Publications related to A method for reducing noise in measurements taken by a distributed sensor

Friction law and hysteresis in granular materials

The macroscopic friction of particulate materials often weakens as the flow rate is increased, leading to potentially disastrous intermittent phenomena including earthquakes and landslides. We theoretically and numerically study this phenomenon in simple g ...

National Academy of Sciences2017

Assessment of a metamaterial-inspired active acoustic liner concept for application to aircraft engine noise reduction

Hervé Lissek, Romain Boulandet, Sami Driss Karkar, Gaël Matten

Acoustic liners are a widespread solution for noise mitigation at aircraft engine level, thanks to lightweight and relatively small dimensions for integration within nacelles. Although conventional liners might be designed to target multiple tonal frequenc ...

2017

Design of Remote Quiet Zones Using Spot-Type Sound Reducers

Hervé Lissek, Romain Boulandet, Thomas Laurence

This paper presents a local control approach to generate remote quiet zones. To deal with situations where global control can hardly be achieved, it is proposed to use an arrangement of spot-type sound reducers as originally suggested by Olson and May. Ass ...

2017

Design and experimental validation of an active acoustic liner for aircraft engine noise reduction

Hervé Lissek, Romain Boulandet, Sami Driss Karkar, Gaël Matten

The use of acoustic liners in aviation industry is a quite common solution for reducing the engines acoustic emissions. Although the current solutions based on single or multilayer liners are efficient and compact for the mid and high frequencies, noise mi ...

2017

On Denoising Crosstalk in Radio Interferometry

Paul Hurley, Matthieu Martin Jean-André Simeoni, Nezihe Merve Gürel

Noise reduction in radio interferometers is a formidable task due to the relatively weak signals under observation. The usual strategy is to compensate with a large number of antennas and extend the observation time. We showed recently that one could denoi ...

2017

Extracting Maya Glyphs from Degraded Ancient Documents via Image Segmentation

Daniel Gatica-Perez, Jean-Marc Odobez, Rui Hu

We present a system for automatically extracting hieroglyph strokes from images of degraded ancient Maya codices. Our system adopts a region-based image segmentation framework. Multi-resolution super-pixels are first extracted to represent each image. A Su ...

2017

Sampling and Reconstruction of Shapes with Algebraic Boundaries

Martin Vetterli, Arash Amini, Mitra Fatemi

We present a sampling theory for a class of binary images with finite rate of innovation (FRI). Every image in our model is the restriction of

\mathds{1}_{\{p\leq0\}}

to the image plane, where

\mathds{1}

denotes the indicator function and

p

is some r ...

2016

Ultra Low Noise CMOS Image Sensors

Assim Boukhayma

CMOS Image Sensors (CIS) overtook the charge coupled devices (CCDs) in low noise performance. Photoelectron counting capability is the next step for CIS for ultimate low light performance and new imaging paradigms. This work presents a review of CMOS image ...

EPFL2016

Comparison of accelerated T1-weighted whole-brain structural-imaging protocols

Jean-Philippe Thiran, Tobias Kober, Bénédicte Marie Maréchal, Reto Meuli, Alexis Roche, Pavel Falkovskiy

Imaging in neuroscience, clinical research and pharmaceutical trials often employs the 3D magnetisation-prepared rapid gradient-echo (MPRAGE) sequence to obtain structural T1-weighted images with high spatial resolution of the human brain. Typical research ...

Academic Press Inc Elsevier Science2016

An analysis of a gyro-free inertial system for INS/GNSS navigation

Davide Antonio Cucci, Mehran Khaghani

Although the concept of determining angular velocity out of the readings of multiple, displaced accelerometers is not new, apparently it has not yet matured into practical technologies. A new generation of low-cost MEMS accelerometers, which is expected to ...

IEEE2016

A method for reducing noise in measurements taken by a distributed sensor

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Friction law and hysteresis in granular materials

Assessment of a metamaterial-inspired active acoustic liner concept for application to aircraft engine noise reduction

Design of Remote Quiet Zones Using Spot-Type Sound Reducers

Design and experimental validation of an active acoustic liner for aircraft engine noise reduction

On Denoising Crosstalk in Radio Interferometry

Extracting Maya Glyphs from Degraded Ancient Documents via Image Segmentation

Sampling and Reconstruction of Shapes with Algebraic Boundaries

Ultra Low Noise CMOS Image Sensors

Comparison of accelerated T1-weighted whole-brain structural-imaging protocols

An analysis of a gyro-free inertial system for INS/GNSS navigation

Design of Remote Quiet Zones Using Spot-Type Sound Reducers

Extracting Maya Glyphs from Degraded Ancient Documents via Image Segmentation

Friction law and hysteresis in granular materials

Sampling and Reconstruction of Shapes with Algebraic Boundaries

Design and experimental validation of an active acoustic liner for aircraft engine noise reduction

Ultra Low Noise CMOS Image Sensors

Comparison of accelerated T1-weighted whole-brain structural-imaging protocols

An analysis of a gyro-free inertial system for INS/GNSS navigation

Assessment of a metamaterial-inspired active acoustic liner concept for application to aircraft engine noise reduction

On Denoising Crosstalk in Radio Interferometry