|
|
||||
|
|
|
|
||
|
ABSTRACT: Principal Component Analysis (PCA) has been successfully applied to construct linear models of shape, graylevel, and motion. In particular, PCA has been widely used to model the variation in the appearance of people's faces.We extend previous work on facial modeling for tracking faces in video sequences as they undergo significant changes due to facial expressions. Here we develop person-specific facial appearance models (PSFAM),which use modular PCA to model complex intra-person appearance changes. Such models require aligned visual training data; in previous work, this has involved a time consuming and error-prone hand alignment and cropping process. Instead, we introduce parameterized component analysis to learn a subspace that is invariant to affine (or higher order) geometric transformations. The automatic learning of a PSFAM given a training image sequence is posed as a continuous optimization problem and is solved with a mixture of stochastic and deterministic techniques achieving sub-pixel accuracy. We illustrate the use of the 2D PSFAM model with several applications including video-conferencing, realistic avatar animation and preliminary experiments with driver fatigue detection. |
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
De la Torre, F. and Black, M. J., Robust Parameterized Component Analysis: Theory and applications to 2D facial appearance models., to appear: Computer Vision and Image Understanding. Special issue on Face Recogntion, |
|
|
|
|
De la Torre, F. and Black, M. J., Robust Parameterized Component Analysis: Applications to 2D facial modeling. European Conf. on Computer Vision, ECCV2002. |
|
|
|
|
De la Torre, F. Automatic Learning
of Appearance Face Models. |
|
|
|
|
De la
Torre, F., Black, M. J., . Dynamic
Coupled Component Analysis. IEEE Proc. Computer Vision and Pattern Recognition, CVPR'01, Kauai, Hawaii, Vol. II, pp. 643-650, Dec. 2001. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
Automatic Learning of 2D Facial appearance Models |
|
|
|
|
|
|
|
|
|
|
|
|
Facial appearance learning (MPEG-1.01Mb) |
|
|
|
|
|
|
|
|
|
|
Virtual Animation |
|
|
|
|
|
|
|
|
|
|
|
|
Face to face (MPEG-1.07Mb) |
|
|
|
|
|
|
|
|
|
|
Eye Tracking |
|
|
|
|
|
|
|
|
|
|
|
|
Eye tracking from profile to profile (AVI-3.88M) |
|
|
|