Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- image classification
- reconstruction error
- joint optimization
- compressive sensing
- negative matrix factorization
- regularized least squares
- face recognition
- signal processing
- image patches
- object tracking
- dimensionality reduction
- test images
- manifold learning
- high dimensional data
- image representation
- orthogonal matching pursuit
- sparse reconstruction
- neural network
- low dimensional
- image processing