1582 search results - page 85 / 317 » On sparse signal representations |
144
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ICA
2010
Springer
15 years 6 months ago
2010
Springer
The problem of estimating a sparse channel, i.e. a channel with a few non-zero taps, appears in many fields of communication including acoustic underwater or wireless transmissions...
145
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ICASSP
2010
IEEE
15 years 4 months ago
2010
IEEE
Does there exist a compact set of visual topics in form of keyword clusters capable to represent all images visual content within an acceptable error? In this paper, we answer thi...
130
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ICASSP
2011
IEEE
14 years 9 months ago
2011
IEEE
This paper is concerned with the estimation of the directionsof-arrival (DOA) of narrowband sources using a sparse spatial spectral model, when the model itself is not precise. Wh...
194
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ICASSP
2011
IEEE
14 years 9 months ago
2011
IEEE
While nonnegative matrix factorization (NMF) has successfully been applied for gain-robust multi-pitch detection, a method to track pitch values over time was not provided. We emb...
177
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ICASSP
2011
IEEE
14 years 9 months ago
2011
IEEE
This paper describes a Bayesian algorithm for rigid/non-rigid 2D visual object tracking based on sparse image features. The algorithm is inspired by the way human visual cortex se...