Optimized signal expansions for sparse representation.
Sven Ole AaseJohn Håkon HusøyJ. H. H. K. SkrettingKjersti EnganPublished in: IEEE Trans. Signal Process. (2001)
Keyphrases
- sparse representation
- compressive sensing
- signal processing
- dictionary learning
- sparse coding
- face recognition
- image classification
- joint optimization
- random projections
- negative matrix factorization
- regularized least squares
- reconstruction error
- test images
- sparse reconstruction
- image patches
- compressed sensing
- high dimensional data
- image representation
- frequency domain
- piecewise smooth
- sparse approximations
- sparse signal representation
- neural network
- blind source separation
- dimensionality reduction
- pattern recognition
- norm minimization
- sparse codes
- multiscale