We present in this paper a technique for modeling and rendering wrinkles in facial animation. The

main advantage of our approach from previous work is that we do not modify the actual face geometry, but

instead we render the wrinkles as bump textures. Moreover we are only interested on wrinkles of expression,

instead of aged wrinkles. The user defines a wrinkle map, which is a gray scale 2D image defining the position

and height of wrinkles on the face. This map is interactively built with the help of the information provided in

the Facial Action Coding System (FACS). The wrinkle map is used as a bump map to built the actual wrinkles.

A prototype system for validation of this proposal is being built as a plug-in for the Expression facial animation

toolkit.-We present　in　this paper a　technique　for modeling and　rendering wrinkles　in　facial animation. The

main　advantage of our　approach　from previous work　is　that we do　not modify　the actual　face geometry, but

instead we　render　the wrinkles as bump　textures. Moreover we are only　interested on wrinkles of expression,

instead of aged wrinkles. The user defines a wrinkle map, which is a gray scale 2D image defining the position

and height of wrinkles on the face. This map　is interactively built with the help of the information provided in

the Facial Action Coding System (FACS). The wrinkle map is used as a bump map to built the actual wrinkles.

A prototype system for validation of this proposal is being built as a plug-in for the Expression facial animation

toolkit.