756 search results - page 15 / 152 » Quantization of Sparse Representations |
ICIP
1999
IEEE
14 years 9 months ago
1999
IEEE
Wavelet packets are an effective representation tool for adaptive waveform analysis of a given signal. We first combine the wavelet packet representation with zerotree quantizatio...
NIPS
2007
13 years 9 months ago
2007
Computational models of visual cortex, and in particular those based on sparse coding, have enjoyed much recent attention. Despite this currency, the question of how sparse or how...
SPEECH
2011
13 years 2 months ago
2011
This article deals with the generation of auditory-inspired spectro-temporal features aimed at audio coding. To do so, we first generate sparse audio representations we call spik...
ICA
2004
Springer
14 years 1 months ago
2004
Springer
A series of recent results shows that if a signal admits a sufficiently sparse representation (in terms of the number of nonzero coefficients) in an “incoherent” dictionary, th...
CORR
2010
Springer
13 years 7 months ago
2010
Springer
Among the many ways to model signals, a recent approach that draws considerable attention is sparse representation modeling. In this model, the signal is assumed to be generated a...