Virtual dictionary based kernel sparse representation for face recognition.
Zizhu FanDa ZhangXin WangQi ZhuYuan-Fang WangPublished in: Pattern Recognit. (2018)
Keyphrases
- sparse representation
- face recognition
- regularized least squares
- dictionary learning
- sparse coding
- signal processing
- image patches
- joint optimization
- image classification
- face images
- test images
- object tracking
- random projections
- negative matrix factorization
- kernel function
- subspace learning
- compressed sensing
- sparse approximations
- kernel methods
- sparsity constraints
- linear discriminant analysis
- high dimensional data
- feature space
- image representation
- dimensionality reduction
- gabor features
- pattern recognition
- norm minimization
- machine learning
- data sets
- principal component analysis
- reproducing kernel hilbert space
- denoising
- feature analysis
- face recognition systems
- feature extraction