Weighted group sparse representation for undersampled face recognition.
Xin TangGuo-Can FengJia-xin CaiPublished in: Neurocomputing (2014)
Keyphrases
- sparse representation
- face recognition
- dictionary learning
- sparse coding
- image patches
- compressive sensing
- image classification
- reconstruction error
- random projections
- face images
- feature extraction
- dimensionality reduction
- sparse approximations
- compressed sensing
- subspace learning
- object tracking
- signal processing
- joint optimization
- negative matrix factorization
- principal component analysis
- high dimensional data
- piecewise smooth
- image representation
- regularized least squares
- test images
- robust face recognition
- norm minimization
- sparse reconstruction
- gabor features
- single image
- high dimensional
- facial expressions
- machine learning