They are readjusted during model adaptation to achieve similar energy value ranges. Special Functions Special functions are used for all kind of data retrieval and for activation of optional model parts. This data is used to train neural networks for model shape classification. Collection and classification of image values along distinct model edges. Depending on optional model parts, different image processing steps are used.
Image processing takes only place on demand, triggered by the energy functions.
All spatial features may be completed by velocity and acceleration values. Principal component analysis or neural dimension reduction may be applied to the coordinates of the outline model. Features of the interior parts may also be used in conjunction with the overall lip shape. Summary, Results Color video sequences without special illumination are used. No special lip make-up is necessary.