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.

Coutelle_Walter_WICCGPI2003.pdf

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