144 search results - page 14 / 29 » Sparsity in time-frequency representations |
TSP
2008
14 years 9 months ago
2008
Sparse signal representations and approximations from overcomplete dictionaries have become an invaluable tool recently. In this paper, we develop a new, heuristic, graph-structure...
CORR
2011
Springer
14 years 1 months ago
2011
Springer
The richness of natural images makes the quest for optimal representations in image processing and computer vision challenging. The latter observation has not prevented the design...
CVPR
2006
IEEE
15 years 11 months ago
2006
IEEE
Shrinkage is a well known and appealing denoising technique. The use of shrinkage is known to be optimal for Gaussian white noise, provided that the sparsity on the signal's ...
ICASSP
2008
IEEE
15 years 4 months ago
2008
IEEE
In this paper, we examine the problem of overcomplete representations and provide new insights into the problem of stable recovery of sparse solutions in noisy environments. We es...
IPPS
2008
IEEE
15 years 4 months ago
2008
IEEE
Multicore processors are marking the beginning of a new era of computing where massive parallelism is available and necessary. Slightly slower but easy to parallelize kernels are ...