Overcomplete Dictionary Design: The Impact of the Sparse Representation Algorithm.
Paul IroftiBogdan DumitrescuPublished in: CSCS (2015)
Keyphrases
- sparse representation
- reconstruction error
- dictionary learning
- sparse coding
- negative matrix factorization
- learning algorithm
- sparse reconstruction
- sparse coefficients
- regularized least squares
- image classification
- orthogonal matching pursuit
- compressed sensing
- face recognition
- signal processing
- norm minimization
- probabilistic model
- image super resolution
- computer vision
- sparsity constraints
- data mining
- test images
- k means
- piecewise smooth
- joint optimization
- singular value decomposition
- natural images
- pattern recognition
- decision trees
- data sets
- learned dictionary
- low rank matrix recovery
- sparse signal representation