144 search results - page 19 / 29 » Sparsity in time-frequency representations |
CVPR
2009
IEEE
15 years 1 months ago
2009
IEEE
One promising approach to remove motion deblurring is to recover one clear image using an image pair. Existing dual-image methods require an accurate image alignment between the i...
CORR
2010
Springer
14 years 9 months ago
2010
Springer
Frames have established themselves as a means to derive redundant, yet stable decompositions of a signal for analysis or transmission, while also promoting sparse expansions. Howe...
TASLP
2010
14 years 4 months ago
2010
We consider the problem of extracting the source signals from an under-determined convolutive mixture assuming known mixing filters. State-of-the-art methods operate in the time-fr...
KDD
2008
ACM
15 years 10 months ago
2008
ACM
Document classification presents difficult challenges due to the sparsity and the high dimensionality of text data, and to the complex semantics of the natural language. The tradi...
ICIP
2007
IEEE
15 years 11 months ago
2007
IEEE
Iterative shrinkage/thresholding (IST) algorithms have been recently proposed to handle high-dimensional convex optimization problems arising in image inverse problems (namely dec...