Sparse representation and dictionary learning based on alternating parallel coordinate descent.
Zunyi TangToshiyo TamuraShuxue DingZhenni LiPublished in: iCAST/UMEDIA (2013)
Keyphrases
- dictionary learning
- sparse representation
- sparse coding
- image super resolution
- reconstruction error
- group sparsity
- image classification
- compressive sensing
- compressed sensing
- sparse codes
- test images
- face recognition
- negative matrix factorization
- image patches
- random projections
- signal processing
- image representation
- sparsity constraints
- high dimensional data
- discriminative power
- low dimensional
- single image super resolution
- dimensionality reduction