Keyphrases
- sparse representation
- feature set
- dictionary learning
- feature space
- feature extraction
- sparse coding
- test images
- face recognition
- feature vectors
- svm classifier
- image classification
- compressive sensing
- class labels
- basis vectors
- object detection
- pattern recognition
- histograms of oriented gradients
- compressed sensing
- image patches
- co occurrence
- object tracking
- regularized least squares
- feature subset
- random projections
- sparsity constraints
- machine learning
- image representation
- higher order
- image features
- training data
- feature selection