Sparse image representation by discrete cosine/spline based dictionaries

Details Sparse image representation by discrete cosine/spline based dictionaries Sparse image representation by discrete cosine/spline based dictionaries

2009-09-07

arxiv.org/abs/0909.1310v1

Mathematics

Numerical Analysis

Scientific paper

Mixed dictionaries generated by cosine and B-spline functions are considered.
It is shown that, by highly nonlinear approaches such as Orthogonal Matching
Pursuit, the discrete version of the proposed dictionaries yields a significant
gain in the sparsity of an image representation.

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