Sparse representations in unions of bases.
Rémi GribonvalMorten NielsenPublished in: IEEE Trans. Inf. Theory (2003)
Keyphrases
- sparse representation
- sparse coefficients
- dictionary learning
- sparse coding
- face recognition
- image classification
- compressive sensing
- image patches
- compressed sensing
- sparse reconstruction
- dimensionality reduction
- joint optimization
- high dimensional data
- signal processing
- random projections
- negative matrix factorization
- image representation
- manifold learning
- object tracking
- pattern languages
- test images
- regularized least squares
- norm minimization
- norm regularization