144 search results - page 1 / 29 » Sparsity in time-frequency representations |
TASLP
2010
13 years 2 months ago
2010
Abstract—We present an algorithm for removing timefrequency components, found by a standard Gabor transform, of a “real-world” sound while causing no audible difference to th...
ICCV
2011
IEEE
12 years 4 months ago
2011
IEEE
As a recently proposed technique, sparse representation based classification (SRC) has been widely used for face recognition (FR). SRC first codes a testing sample as a sparse lin...
ICIP
1994
IEEE
14 years 6 months ago
1994
IEEE
The high noise sensitivity of the Wigner distribution makes smoothing a necessity for producing readable time-frequency images of noise corrupted signals. Since h e a r smoothing ...
ICMCS
2006
IEEE
13 years 10 months ago
2006
IEEE
In this paper, we address the problem of separating unknown multicomponent signals from their instantaneous mixtures. Using linear time-frequency (TF) representation of the mixtur...
ICCV
2011
IEEE
12 years 4 months ago
2011
IEEE
This paper proposes a novel sparse representation model called centralized sparse representation (CSR) for image restoration tasks. In order for faithful image reconstruction, it ...