12. The method according to claim 11 , wherein the weighted sum of modes includes modes to represent a shape of the face and an appearance of the face.
12. The method according to claim 11 , wherein the weighted sum of modes includes modes to represent a shape of the face and an appearance of the face. 13. The method according to claim 12 , wherein a same weighting of the identified expression-dependent weightings is used for a shape mode and a corresponding appearance mode of the modes to represent the shape of the face and the appearance of the face.