Sparse Representations from Inverse Problems to Pattern Recognition
author: Stéphane Mallat,
Applied Mathematics - CMAP, École Polytechnique
published: July 30, 2009, recorded: June 2009, views: 14211
published: July 30, 2009, recorded: June 2009, views: 14211
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Description
Sparse representations are at the core of many low-level signal processing procedures and are used by most pattern recognition algorithms to reduce the dimension of the search space. Structuring sparse representations fro pattern recognition applications requires taking into account invariants relatively to physical deformations such as rotation scaling or illumination. Sparsity, invariants and stability are conflicting requirements which is a source of open problems. Structured sparse representations with locally linear vector spaces are introduced for super-resolution inverse problems and pattern recognition.
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