1. Human-robot interaction based on Haar-like features and eigenfaces;Barreto;International Conference on Robotics and Automation,2004
2. A new approach to linear filtering and prediction problems;Kalman;Transactions of ASME - Journal of Basic Engineering,1960
3. An extended set of haar-like features for rapid object detection;Lienhart;IEEE ICIP 2002,2002
4. Probabilist visual learning for object representation;Moghaddam;Technical Report 326, Media Laboratory, Massachusetts Institute of Technology,1995