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» Quantization of Sparse Representations
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ICASSP
2008
IEEE
14 years 2 months ago
A first step to convolutive sparse representation
In this paper an extension of the sparse decomposition problem is considered and an algorithm for solving it is presented. In this extension, it is known that one of the shifted v...
Hamed Firouzi, Massoud Babaie-Zadeh, Aria Ghasemia...
ICASSP
2011
IEEE
12 years 11 months ago
Audio Signal Representations for Factorization in the Sparse Domain
In this paper, a new class of audio representations is introduced, together with a corresponding fast decomposition algorithm. The main feature of these representations is that th...
Manuel Moussallam, Laurent Daudet, Gaël Richa...
ICASSP
2010
IEEE
13 years 7 months ago
Approximate nearest neighbors using sparse representations
A new method is introduced that makes use of sparse image representations to search for approximate nearest neighbors (ANN) under the normalized inner-product distance. The approa...
Joaquin Zepeda, Ewa Kijak, Christine Guillemot
DCC
2001
IEEE
14 years 7 months ago
A Posteriori Quantized Matching Pursuit
This paper studies quantization error in the context of Matching Pursuit coded streams and proposes a new coefficient quantization scheme taking benefit of the Matching Pursuit pr...
Pascal Frossard, Pierre Vandergheynst
CIVR
2007
Springer
166views Image Analysis» more  CIVR 2007»
14 years 1 months ago
Multi-level local descriptor quantization for bag-of-visterms image representation
In the past, quantized local descriptors have been shown to be a good base for the representation of images, that can be applied to a wide range of tasks. However, current approac...
Pedro Quelhas, Jean-Marc Odobez