Publications related to Reduced-Dimension Linear Transform Coding of Correlated Signals in Networks

Speaker Change Detection with Privacy-Preserving Audio Cues

Hervé Bourlard, Daniel Gatica-Perez, Sree Hari Krishnan Parthasarathi

In this paper we investigate a set of privacy-sensitive audio features for speaker change detection (SCD) in multiparty conversations. These features are based on three different principles: characterizing the excitation source information using linear pre ...

2009

Speaker Change Detection with Privacy-Preserving Audio Cues

Hervé Bourlard, Daniel Gatica-Perez, Sree Hari Krishnan Parthasarathi

In this paper we investigate a set of privacy-sensitive audio features for speaker change detection (SCD) in multiparty conversations. These features are based on three different principles: characterizing the excitation source information using linear pre ...

Idiap2009

On Depth-bounded Message Passing Systems

Damien Zufferey

We explore the border between decidability and undecidability of verification problems related to message passing systems that admit unbounded creation of threads and name mobility. Inspired by use cases in real-life programs we introduce the notion of dep ...

2009

On Degraded Two Message Set Broadcast

Christina Fragouli, Suhas Diggavi, Vinod Malathidevi Prabhakaran, Shirin Saeedi Bidokhti

We consider the two message set problem, where a source broadcasts a common message

W_1

to an arbitrary set of receivers

\mathcal{U}

and a private message

W_2

to a subset of the receivers

\mathcal{P}\subseteq \mathcal{U}

. Transmissions occur over l ...

EPFL Technical Report2009

Dimensionality Reduction for Distributed Estimation in the Infinite Dimensional Regime

Martin Vetterli, Olivier Roy

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

On Broadcast with a Common Message over Networks

Satish Babu Korada, Dinkar Vasudevan

We consider the following communication problem over a directed graph. A source node wants to transmit a common message to a set of receiver nodes along with a private message to each of the receivers. We show a class of networks for which the achievable r ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

SURE-LET multichannel image denoising: Undecimated wavelet thresholding

Thierry Blu, Florian Luisier

We propose an extension of the recently devised SURE-LET grayscale denoising approach for multichannel images. Assuming additive Gaussian white noise, the unknown linear parameters of a transform-domain pointwise multichannel thresholding are globally opti ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

SURE-LET interscale-intercolor wavelet thresholding for color image denoising - art. no. 67011H

Thierry Blu, Florian Luisier

We propose a new orthonormal wavelet thresholding algorithm for denoising color images that are assumed to be corrupted by additive Gaussian white noise of known intercolor covariance matrix. The proposed wavelet denoiser consists of a linear expansion of ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2007

Space-frequency quantization for image compression with directionlets

Martin Vetterli, Vladan Velisavljevic

The standard separable 2-D wavelet transform (WT) has recently achieved a great success in image processing because it provides a sparse representation of smooth images. However, it fails to efficiently capture 1-D discontinuities, like edges or contours. ...

2007

Loss Tomography in General Topologies with Network Coding

Christina Fragouli

Network tomography infers internal network characteristics by sending and collecting probe packets from the network edge. Traditional tomographic techniques for general topologies typically use a mesh of multicast trees and/or unicast paths to cover the en ...

2007

Reduced-Dimension Linear Transform Coding of Correlated Signals in Networks

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Speaker Change Detection with Privacy-Preserving Audio Cues

Speaker Change Detection with Privacy-Preserving Audio Cues

On Depth-bounded Message Passing Systems

On Degraded Two Message Set Broadcast

Dimensionality Reduction for Distributed Estimation in the Infinite Dimensional Regime

On Broadcast with a Common Message over Networks

SURE-LET multichannel image denoising: Undecimated wavelet thresholding

SURE-LET interscale-intercolor wavelet thresholding for color image denoising - art. no. 67011H

Space-frequency quantization for image compression with directionlets

Loss Tomography in General Topologies with Network Coding

Speaker Change Detection with Privacy-Preserving Audio Cues

On Degraded Two Message Set Broadcast

On Broadcast with a Common Message over Networks

On Depth-bounded Message Passing Systems

Dimensionality Reduction for Distributed Estimation in the Infinite Dimensional Regime

SURE-LET multichannel image denoising: Undecimated wavelet thresholding

SURE-LET interscale-intercolor wavelet thresholding for color image denoising - art. no. 67011H

Space-frequency quantization for image compression with directionlets

Loss Tomography in General Topologies with Network Coding

Speaker Change Detection with Privacy-Preserving Audio Cues