1. An avatar facial expression representation apparatus, comprising: a vocal information processor to output vocal information including at least one of an emotional change of a user and a point of emphasis of the user from vocal information generated by the voice of the user; a pronunciation information processor to output pronunciation information including a change in mouth shape of the user from pronunciation information generated by the voice of the user; an image information processor to output facial information by tracking facial movements and changes in facial expression of the user from image information; and a facial expression processor to represent a facial expression of an avatar using at least one of the vocal information output from the vocal information processor, the pronunciation information output from the pronunciation information processor, and the facial information output from the image information processor.
1. An avatar facial expression representation apparatus, comprising: a vocal information processor to output vocal information including at least one of an emotional change of a user and a point of emphasis of the user from vocal information generated by the voice of the user; a pronunciation information processor to output pronunciation information including a change in mouth shape of the user from pronunciation information generated by the voice of the user; an image information processor to output facial information by tracking facial movements and changes in facial expression of the user from image information; and a facial expression processor to represent a facial expression of an avatar using at least one of the vocal information output from the vocal information processor, the pronunciation information output from the pronunciation information processor, and the facial information output from the image information processor. 18. The avatar facial expression representation apparatus of claim 1 , wherein the facial expression processor uses at least one of the vocal information related to emotional changes of the user and the point of emphasis made by the user, the pronunciation information related to changes in mouth shape of the user, and the facial information related to the facial movements of the user and changes in facial expression to represent the facial expression of an avatar in synchronization with the actual facial expressions of the user.