Publications related to Sparse dictionary learning

Sparsity averaging for radio-interferometric imaging

Yves Wiaux, Rafael Eduardo Carrillo Rangel, Jason Douglas McEwen

We propose a novel regularization method for compressive imaging in the context of the CS theory with coherent and redundant dictionaries. The approach relies on the conjecture that natural images exhibit strong average sparsity over multiple coherent fram ...

2013

Sparse projections onto the simplex

Volkan Cevher, Christoph Koch, Anastasios Kyrillidis

Most learning methods with rank or sparsity constraints use convex relaxations, which lead to optimization with the nuclear norm or the`1-norm. However, several important learning applications cannot benet from this approach as they feature these convex no ...

JMLR W&CP2013

Optimal Sampling Rates in Infinite-Dimensional Compressed Sensing

Martin Vetterli, Loïc Arnaud Baboulaz, Mitra Fatemi

The theory of compressed sensing studies the problem of recovering a high dimensional sparse vector from its projections onto lower dimensional subspaces. The recently introduced framework of infinite-dimensional compressed sensing [1], to some extent gene ...

2013

Model-based Sparse Component Analysis for Multiparty Distant Speech Recognition

Afsaneh Asaei

This research takes place in the general context of improving the performance of the Distant Speech Recognition (DSR) systems, tackling the reverberation and recognition of overlap speech. Perceptual modeling indicates that sparse representation exists in ...

École Polytechnique Fédérale de Lausanne2013

Anisotropic Interpolation of Sparse Generalized Image Samples

Michaël Unser, Aurélien Bourquard

Practical image-acquisition systems are often modeled as a continuous-domain prefilter followed by an ideal sampler, where generalized samples are obtained after convolution with the impulse response of the device. In this paper, our goal is to interpolate ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Person Independent 3D Gaze Estimation From Remote RGB-D Cameras

Jean-Marc Odobez, Kenneth Alberto Funes Mora

We address the problem of person independent 3D gaze estimation using a remote, low resolution, RGB-D camera. The approach relies on a sparse technique to reconstruct normalized eye test images from a gaze appearance model (a set of eye image/gaze pairs) a ...

IEEE2013

Joint Low-Rank And Sparse Light Field Modelling For Dense Multiview Data Compression

Pierre Vandergheynst, Mahdad Hosseini Kamal

The effective representation of the structures in the multiview images is an important problem that arises in visual sensor networks. This paper presents a novel recovery scheme from compressive samples which exploit local and non-local correlated structur ...

Ieee2013

Joint Low-rank and Sparse Light Field Modeling for Dense Multiview Data Compression

Pierre Vandergheynst, Mahdad Hosseini Kamal

2013

LAYOUT ASSESSMENT METHOD AND SYSTEM

Frank Grégoire Jean de Morsier, Virginia Estellers Casas, Nathalie Casati, Maria Gabrani

Candidate layout patterns can be assessed using a sparse pattern dictionary of known design layout patterns by determining sparse coefficients for each candidate pattern, reconstructing the respective candidate pattern, and determining reconstruction error ...

U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE2013

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Sparse dictionary learning

Classification of unions of subspaces with sparse representations

Sparsity averaging for radio-interferometric imaging

Sparse projections onto the simplex

Optimal Sampling Rates in Infinite-Dimensional Compressed Sensing

Model-based Sparse Component Analysis for Multiparty Distant Speech Recognition

Anisotropic Interpolation of Sparse Generalized Image Samples

Person Independent 3D Gaze Estimation From Remote RGB-D Cameras

Joint Low-Rank And Sparse Light Field Modelling For Dense Multiview Data Compression

Joint Low-rank and Sparse Light Field Modeling for Dense Multiview Data Compression

LAYOUT ASSESSMENT METHOD AND SYSTEM

Graph Chatbot

Chat with Graph Search

LAYOUT ASSESSMENT METHOD AND SYSTEM

Classification of unions of subspaces with sparse representations

Sparsity averaging for radio-interferometric imaging

Optimal Sampling Rates in Infinite-Dimensional Compressed Sensing

Model-based Sparse Component Analysis for Multiparty Distant Speech Recognition

Joint Low-Rank And Sparse Light Field Modelling For Dense Multiview Data Compression

Anisotropic Interpolation of Sparse Generalized Image Samples

Person Independent 3D Gaze Estimation From Remote RGB-D Cameras

Joint Low-rank and Sparse Light Field Modeling for Dense Multiview Data Compression

Sparse projections onto the simplex