Keyphrases
- estimation algorithm
- landmark points
- neighborhood preserving
- automatically detected
- shape model
- active shape model
- dimensionality reduction
- point correspondences
- computationally efficient
- maximum likelihood
- active appearance models
- frontal view
- high dimensional
- shape descriptors
- shape context
- low dimensional
- facial expressions
- keypoints
- facial expression recognition
- shape matching
- facial features