144 search results - page 5 / 29 » Sparsity in time-frequency representations |
NIPS
2001
14 years 11 months ago
2001
The adaptive TAP Gibbs free energy for a general densely connected probabilistic model with quadratic interactions and arbritary single site constraints is derived. We show how a ...
CORR
2011
Springer
14 years 4 months ago
2011
Springer
Anisotropic decompositions using representation systems such as curvelets, contourlet, or shearlets have recently attracted significantly increased attention due to the fact that...
ICIP
2009
IEEE
15 years 10 months ago
2009
IEEE
Recently morphological diversity and sparsity have emerged as new and effective sources of diversity for Blind Source Separation. Based on these new concepts, novel methods such a...
CVPR
2010
IEEE
15 years 6 months ago
2010
IEEE
We propose a new scheme to estimate image bias field through introducing two sparsity constraints. One is that the bias-free image has concise representation with image gradients o...
PRL
2010
14 years 8 months ago
2010
: Single training image face recognition is one of main challenges to appearance-based pattern recognition techniques. Many classical dimensionality reduction methods such as LDA h...