Keyphrases
- low rank matrix recovery
- sparse representation
- face recognition
- robust face recognition
- feature extraction
- dictionary learning
- sparse coding
- face images
- compressive sensing
- random projections
- image classification
- compressed sensing
- human faces
- subspace learning
- object tracking
- image patches
- semi supervised
- facial expressions
- computer vision
- image representation
- face databases
- unsupervised learning
- dimensionality reduction
- principal component analysis
- face recognition systems
- face verification
- machine learning
- varying illumination
- small number
- illumination variations
- sparse representation based classification