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ICASSP
2011
IEEE
14 years 1 months ago
On cooperative image denoising
In this paper we suggest how several competing image denoising algorithms, differing in design parameters, or even in design principles, can be combined together to yield a better...
Maciej Niedzwiecki, Szymon Gackowski
ICASSP
2011
IEEE
14 years 1 months ago
Time-lagged Directed Information
Directed Information (DI) has recently been introduced to quantify the causality between two signals. However, one major remaining issue with DI is the computational complexity wh...
Ying Liu, Selin Aviyente
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ICASSP
2011
IEEE
14 years 1 months ago
An unsupervised algorithm for hybrid/morphological signal decomposition
The main contribution presented here is an adaptive/unsupervised iterative thresholding algorithm for sparse representation of signals which can be modeled as the sum of two compo...
Matthieu Kowalski, Thomas Rodet
ICASSP
2011
IEEE
14 years 1 months ago
Log-spectral amplitude estimation with Generalized Gamma distributions for speech enhancement
This paper presents a family of log-spectral amplitude (LSA) estimators for speech enhancement. Generalized Gamma distributed (GGD) priors are assumed for speech short-time spectr...
Bengt J. Borgstrom, Abeer Alwan
ICASSP
2011
IEEE
14 years 1 months ago
Sliding window greedy RLS for sparse filters
We present a sliding window RLS for sparse filters, based on the greedy least squares algorithm. The algorithm adapts a partial QR factorization with pivoting, using a simplifie...
Alexandru Onose, Bogdan Dumitrescu, Ioan Tabus