Publications related to Shapes from Pixels

Resolution-Invariant Separable ARMA Modeling of Images

Michaël Unser, Aurélien Bourquard, Hagay Kirshner

We suggest a continuous-domain stochastic modeling of images that is invariant to spatial resolution. Specifically, we are proposing an estimator that is calibrated with respect to the sampling step, and that can potentially handle aliased data. Motivated ...

IEEE2011

Sampling and Reconstructing Diffusion Fields with Localized Sources

Martin Vetterli, Yue Lu, Juri Ranieri, Amina Chebira

We study the spatiotemporal sampling of a diffusion field generated by K point sources, aiming to fully reconstruct the unknown initial field distribution from the sample measurements. The sampling operator in our problem can be described by a matrix deriv ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Samplinghelper a web-based tool to assess the reliability of sampling strategies in sewers and receiving waters

David Andrew Barry, Luca Rossi, Nathalie Chèvre Rossi

Sampling is a key step in the analysis of chemical compounds. It is particularly important in the environmental field, for example for wastewater effluents, wet-weather discharges or streams in which the flows and concentrations vary greatly over time. In ...

IWA Publishing2011

Group Testing with Probabilistic Tests: Theory, Design and Application

Martin Vetterli, Amin Karbasi, Ali Hormati, Mahdi Cheraghchi Bashi Astaneh

Identification of defective members of large populations has been widely studied in the statistics community under the name of group testing. It involves grouping subsets of items into different pools and detecting defective members based on the set of tes ...

Institute of Electrical and Electronics Engineers2011

Sampling Trajectories for Mobile Sensing

Martin Vetterli, Jayakrishnan Unnikrishnan

Classical sampling theory for sampling and reconstructing bandlimited fields in

\Re^d

addresses the problem of sampling on lattice points. We consider a generalization of this problem, in which one samples the field along

1

-dimensional spatial trajecto ...

2011

A Sampling Theory Approach for Continuous ARMA Identification

Michaël Unser, Hagay Kirshner, Simona Maggio

The problem of estimating continuous-domain autoregressive moving-average processes from sampled data is considered. The proposed approach incorporates the sampling process into the problem formulation while introducing exponential models for both the cont ...

IEEE2011

Efficient multiple time scale molecular dynamics: Using colored noise thermostats to stabilize resonances

Michele Ceriotti

Multiple time scale molecular dynamics enhances computational efficiency by updating slow motions less frequently than fast motions. However, in practice, the largest outer time step possible is limited not by the physical forces but by resonances between ...

American Institute of Physics2011

Parts-Based Face Verification using Local Frequency Bands

Sébastien Marcel

In this paper we extend the Parts-Based approach of face verification by performing a frequency-based decomposition. The Parts-Based approach divides the face into a set of blocks which are then considered to be separate observations, this is a spatial dec ...

Idiap2011

Sampling Curves with Finite Rate of Innovation

Thierry Blu, Hanjie Pan, Pier Luigi Dragotti

We focus on a specific class of curves that can be parametrized using a finite number of variables in two dimensions. The corresponding indicator plane, which is a binary image, has infinite bandwidth and can not be sampled and perfectly reconstructed with ...

2011

Distributed Sampling of Signals Linked by Sparse Filtering: Theory and Applications

Martin Vetterli, Olivier Roy, Yue Lu, Ali Hormati

We study the distributed sampling and centralized reconstruction of two correlated signals, modeled as the input and output of an unknown sparse filtering operation. This is akin to a Slepian-Wolf setup, but in the sampling rather than the lossless compres ...

2010

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Resolution-Invariant Separable ARMA Modeling of Images

Sampling and Reconstructing Diffusion Fields with Localized Sources

Samplinghelper a web-based tool to assess the reliability of sampling strategies in sewers and receiving waters

Group Testing with Probabilistic Tests: Theory, Design and Application

Sampling Trajectories for Mobile Sensing

A Sampling Theory Approach for Continuous ARMA Identification

Efficient multiple time scale molecular dynamics: Using colored noise thermostats to stabilize resonances

Parts-Based Face Verification using Local Frequency Bands

Sampling Curves with Finite Rate of Innovation

Distributed Sampling of Signals Linked by Sparse Filtering: Theory and Applications

Efficient multiple time scale molecular dynamics: Using colored noise thermostats to stabilize resonances

Sampling and Reconstructing Diffusion Fields with Localized Sources

Distributed Sampling of Signals Linked by Sparse Filtering: Theory and Applications

Resolution-Invariant Separable ARMA Modeling of Images

Group Testing with Probabilistic Tests: Theory, Design and Application

Parts-Based Face Verification using Local Frequency Bands

Samplinghelper a web-based tool to assess the reliability of sampling strategies in sewers and receiving waters

Sampling Trajectories for Mobile Sensing

Sampling Curves with Finite Rate of Innovation

A Sampling Theory Approach for Continuous ARMA Identification