Verifying a user in a personal face space

For user verification on a personal digital assistant (PDA), a fast and simple system is developed. In the enrollment phase, face detection and registration are done by a Viola-Jones based method, taking advantage of its accuracy and speed. The face feature vectors obtained this way are then used to build up a face space specific to the user by principal component analysis (PCA). Furthermore, the face variations caused by small registration shifts are also modeled, in order to better capture the variation in the face space, and simplify the enrollment. Current experiments show that this system is fast, efficient, and accurate.