On Sparse Representation in Fourier and Local Bases.
Pier Luigi DragottiYue M. LuPublished in: IEEE Trans. Inf. Theory (2014)
Keyphrases
- sparse representation
- sparse coefficients
- dictionary learning
- sparse coding
- fourier transform
- compressive sensing
- reconstruction error
- compressed sensing
- image classification
- image patches
- face recognition
- signal processing
- negative matrix factorization
- high dimensional data
- image reconstruction
- object tracking
- dimensionality reduction
- radon transform
- sparse approximations
- regularized least squares
- random projections
- frequency domain
- image representation
- joint optimization
- sparse learning
- linear combination
- feature extraction
- knn
- basis functions
- probabilistic model
- fourier domain
- piecewise smooth
- range images
- data sets