On Sparse Representation in Fourier and Local Bases.
Pier Luigi DragottiYue M. LuPublished in: CoRR (2013)
Keyphrases
- sparse representation
- sparse coefficients
- dictionary learning
- sparse coding
- fourier transform
- signal processing
- face recognition
- image classification
- compressive sensing
- joint optimization
- reconstruction error
- frequency domain
- compressed sensing
- image patches
- radon transform
- image reconstruction
- image representation
- negative matrix factorization
- basis functions
- dimensionality reduction
- random projections
- test images
- object tracking
- sparsity constraints
- neural network
- high dimensional
- high dimensional data
- piecewise smooth
- sparse reconstruction
- sparse approximations
- fourier domain
- basis vectors
- sparse learning