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Showing 1 to 2 of 2 for “"Redundant Dictionary"”.
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Sparse Representations and Nonlinear Image Processing for Inverse Imaging Solutions
… as images, admit a sparse decomposition over a redundant dictionary leads to efficient algorithms for handling such sources of data. The standard sparse representation, however, does not consider the intrinsic geometric structure present in the data, thereby leading to sub-optimal results. Using …
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Greedy Algorithms and Incoherent Systems
<p>This dissertation concerns estimates on the size of sets that have small coherence among the elements, the latest best upper bound on the rate of convergence of greedy expansions, and explicit formulas for approximants from the Pure Greedy Algorithm.</p>