Dictionary Optimization for Block-Sparse Representations
Kevin RosenblumLihi Zelnik-ManorYonina C. EldarPublished in: CoRR (2010)
Keyphrases
- sparse representation
- joint optimization
- dictionary learning
- sparse coding
- norm minimization
- face recognition
- image classification
- orthogonal matching pursuit
- image patches
- image representation
- high dimensional data
- sparse reconstruction
- compressive sensing
- learned dictionary
- negative matrix factorization
- compressed sensing
- random projections
- neural network
- regularized least squares
- manifold learning
- test images
- signal processing
- sparse learning
- dimensionality reduction
- data mining
- image super resolution
- multiscale
- feature extraction
- data analysis
- sparse coefficients
- sparse signal representation