Keyphrases
- sparse representation
- sparse coding
- dictionary learning
- image classification
- face recognition
- dimensionality reduction
- compressive sensing
- image patches
- joint optimization
- negative matrix factorization
- compressed sensing
- signal processing
- manifold learning
- high dimensional data
- random projections
- single image super resolution
- test images
- object tracking
- image representation
- regularized least squares
- image data
- unsupervised learning
- higher order
- feature vectors
- object recognition
- computer vision
- machine learning
- sparse reconstruction
- data sets