, Volume 29, Issue 11, pp 1135-1149
Date: 08 Nov 2012

Three-dimensional cartoon facial animation based on art rules

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Three-dimensional (3D) cartoon facial animation is one step further than the challenging 3D caricaturing which generates 3D still caricatures only. In this paper, a 3D cartoon facial animation system is developed for a subject given only a single frontal face image of a neutral expression. The system is composed of three steps consisting of 3D cartoon face exaggeration, texture processing, and 3D cartoon facial animation. By following caricaturing rules of artists, instead of mathematical formulations, 3D cartoon face exaggeration is accomplished at both global and local levels. As a result, the final exaggeration is capable of depicting the characteristics of an input face while achieving artistic deformations. In the texture processing step, texture coordinates of the vertices of the cartoon face model are obtained by mapping the parameterized grid of the standard face model to a cartoon face template and aligning the input face to the face template.

Finally, 3D cartoon facial animation is implemented in the MPEG-4 animation framework. In order to avoid time-consuming construction of a face animation table, we propose to utilize the tables of existing models through model mapping. Experimental results demonstrate the effectiveness and efficiency of our proposed system.