Keyphrases
- human faces
- facial expressions
- lighting conditions
- face recognition
- face detection
- face images
- facial features
- facial images
- viola jones
- pose estimation
- face analysis
- active appearance models
- frontal view
- detection method
- object detection
- high quality
- image processing
- learning algorithm
- face databases
- facial expression recognition
- facial animation
- facial region
- data sets