Tracking a face for knowledge-based coding of videophone sequences.
Liang ZhangPublished in: Signal Process. Image Commun. (1997)
Keyphrases
- inter frame
- long sequences
- real sequences
- real time
- face tracking
- partially occluded
- upper body
- facial feature tracking
- particle filter
- face detection and tracking
- coding method
- recognition algorithm
- video sequences
- coding scheme
- visual tracking
- expert systems
- head orientation
- hidden markov models
- object tracking
- human faces
- kalman filter
- moving target
- head motion
- coding regions
- mean shift
- complex background
- lip reading
- head tracking
- lighting conditions
- partial occlusion
- particle filtering
- facial feature detection
- sequential patterns
- facial expressions
- tracking accuracy
- expression recognition
- appearance variations
- sequence alignment