Keyphrases
- image set
- face images
- face recognition
- linear subspace
- face space
- human faces
- image collections
- facial expressions
- principal component analysis
- feature vectors
- discriminant analysis
- linear discriminant analysis
- feature extraction
- training set
- image matching
- sparse representation
- appearance manifolds
- image set classification
- face detection
- high resolution
- computer vision
- object detection
- active learning
- video sequences
- subspace learning
- high quality
- image processing
- learning algorithm