Publications related to Laplace transform

Dimensionality Reduction for Distributed Estimation in the Infinite Dimensional Regime

Distributed estimation of an unknown signal is a common task in sensor networks. The scenario usually envisioned consists of several nodes, each making an observation correlated with the signal of interest. The acquired data is then wirelessly transmitted ...

Institute of Electrical and Electronics Engineers2008

Super-resolution from unregistered omnidirectional images

Pascal Frossard, Zafer Arican

This paper addresses the problem of super- resolution from low resolution spherical images that are not perfectly registered. Such a problem is typically en- countered in omnidirectional vision scenarios with re- duced resolution sensors in imperfect setti ...

2008

Extended focus Fourier domain optical coherence microscopy and fluorescence lifetime imaging

Theo Lasser, Rainer Leitgeb, Martin Villiger, Adrian Bachmann, Cédric Blatter

Fourier domain Optical coherence microscopy (FDOCM) offers excellent sensitivity and high axial resolution to image the structure of biological tissue. The depth information is extracted in parallel and allows very high volume acquisition rates. An illumin ...

SPIE2008

Scrambling for Privacy Protection in Video Surveillance Systems

Touradj Ebrahimi, Frédéric Dufaux

In this paper, we address the problem of privacy protection in video surveillance. We introduce two efficient approaches to conceal Regions of Interest (ROI) based on transform-domain or codestream-domain scrambling. In the first technique, the sign of sel ...

2008

The Monogenic Riesz-Laplace Wavelet Transform

Michaël Unser, Dimitri Nestor Alice Van De Ville, Katarina Balac

We introduce a family of real and complex wavelet bases of

L _{ 2 }

(\mathbb{R} ^{ 2 }

) that are directly linked to the Laplace and Riesz operators. The crucial point is that the family is closed with respect to the Riesz transform which maps a re ...

EURASIP2008

Comparing traffic flow models with different number of "phases"

By comparing microscopic traffic flow models with a different number of phases in the context of a simple scenario, the similarities as well as the differences of the various traffic flow models can be discussed. It turns out that there is a certain range ...

Springer Verlag2008

The SURE-LET Approach to Image Denoising

Thierry Blu, Florian Luisier

We propose a new approach to image denoising, based on the image-domain minimization of an estimate of the mean squared error—Stein's unbiased risk estimate (SURE). Unlike most existing denoising algorithms, using the SURE makes it needless to hypothesize ...

Institute of Electrical and Electronics Engineers2007

Real-time scattering compensation for time-of-flight camera

Heinz Hügli

3D images from time-of-flight cameras may suffer from false depth readings caused by light scattering. In order to reduce such scattering artifacts, a scattering compensation procedure is proposed. First, scattering is analysed and expressed as a linear tr ...

2007

Modeling of Hysteresis Losses Applied to Slotless Permanent Magnet Motors

Yves Perriard, Miroslav Markovic, Pierre-Daniel Pfister

The paper presents a method to determine hysteresis losses in synchronous permanent magnet (M) slotless motors. The method comprises four steps: (1) experimental determination of the B-H loop, () analytical modeling of the B-H loop by applying different mo ...

2007

The Distributed Karhunen-Loève Transform

Martin Vetterli, Michael Christoph Gastpar, Pier Luigi Dragotti

The Karhunen–Loève transform (KLT) is a key ele- ment of many signal processing and communication tasks. Many recent applications involve distributed signal processing, where it is not generally possible to apply the KLT to the entire signal; rather, the K ...

2006

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Dimensionality Reduction for Distributed Estimation in the Infinite Dimensional Regime

Super-resolution from unregistered omnidirectional images

Extended focus Fourier domain optical coherence microscopy and fluorescence lifetime imaging

Scrambling for Privacy Protection in Video Surveillance Systems

The Monogenic Riesz-Laplace Wavelet Transform

Comparing traffic flow models with different number of "phases"

The SURE-LET Approach to Image Denoising

Real-time scattering compensation for time-of-flight camera

Modeling of Hysteresis Losses Applied to Slotless Permanent Magnet Motors

The Distributed Karhunen-Loève Transform

Comparing traffic flow models with different number of "phases"

Extended focus Fourier domain optical coherence microscopy and fluorescence lifetime imaging

The Monogenic Riesz-Laplace Wavelet Transform

The SURE-LET Approach to Image Denoising

Real-time scattering compensation for time-of-flight camera

Modeling of Hysteresis Losses Applied to Slotless Permanent Magnet Motors

The Distributed Karhunen-Loève Transform

Dimensionality Reduction for Distributed Estimation in the Infinite Dimensional Regime

Super-resolution from unregistered omnidirectional images

Scrambling for Privacy Protection in Video Surveillance Systems