On the Minimal Overcompleteness Allowing Universal Sparse Representation.
Rotem MulayoffTomer MichaeliPublished in: CoRR (2018)
Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- image classification
- face recognition
- joint optimization
- image patches
- compressed sensing
- piecewise smooth
- compressive sensing
- reconstruction error
- high dimensional data
- image representation
- negative matrix factorization
- regularized least squares
- object tracking
- random projections
- sparse approximations
- sparse reconstruction
- dimensionality reduction
- signal processing
- machine learning
- test images
- sparse coefficients
- neural network
- input image
- nearest neighbor
- basis vectors
- data points
- sparsity constraints