Clemens Sielaff
ABSTRACT
We present an original graphic interface approach for animating a virtual character using expressions in real-time. The Emotional Color Wheel (EmoCoW) is an innovative and, to the best of our knowledge, unprecedented approach to tangibly controlled realtime facial animation. The system is programmed in C++ employing the Qt framework and is compiled as plug-in for Frapper as testing and development platform. The tangible device in use is a 3DConnexion Space Navigator, a commercially available 6-axes mouse for less than 90€ / 100$.
For the interface, two sets of expressions are mapped on a circle each, with one circle nested into the other. The artist controls the rotation of both circles as well as vertical blend slider cutting the two topmost positions, thereby blending between two shapes on each circle and between the inner and outer circle, respectively. With a proper setup, it is possible to blend between any two emotions in the model without triggering unwanted ones in the process.
- Helzle, V., Biehn, C., Schlömer, T., and Linner, F. 2004. Adaptable setup for performance driven facial animation. In SIGGRAPH '04: ACM SIGGRAPH 2004 Sketches, ACM, New York, NY, USA, 54. Google Scholar
Digital Library
- Kouadio, C., Poulin, P., and Lachapelle, P. 1998. Realtime facial animation based upon a bank of 3d facial expressions. In CA '98: Proceedings of the Computer Animation, IEEE Computer Society, Washington, DC, USA, 128. Google ScholarDigital Library
- Weise, T., Li, H., Van Gool, L., and Pauly, M. 2009. Face/off: live facial puppetry. In SCA '09: Proceedings of the 2009 ACM SIGGRAPH/Eurographics Symposium on Computer Animation, ACM, New York, NY, USA, 7--16. Google ScholarDigital Library
Index Terms
- EmoCoW: an interface for real-time facial animation
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