Dictionary learning with log-regularizer for sparse representation.
Zhenni LiShuxue DingYujie LiPublished in: DSP (2015)
Keyphrases
- dictionary learning
- sparse representation
- sparse coding
- image classification
- image super resolution
- face recognition
- image patches
- group sparsity
- compressed sensing
- random projections
- signal processing
- semi supervised
- compressive sensing
- test images
- negative matrix factorization
- high dimensional data
- total variation
- dimensionality reduction
- image representation
- reconstruction error
- sparsity constraints
- regularization term
- sparse codes
- learning algorithm
- signal recovery
- image processing