MPEG4

Greta animation engine produces MPEG4 compatible animation. The system outputs frame of Body Animation Parameters and Facial Animation Parameters. The Greta platform is also capable of taking as inputs these animation parameters to render the animation on a virtual character using Ogre3D or Unity3D.

Niewiadomski, R., Bevacqua, E., Mancini, M., & Pelachaud, C. (2009, May). Greta: an interactive expressive ECA system. In Proceedings of The 8th International Conference on Autonomous Agents and Multiagent Systems-Volume 2 (pp. 1399-1400). International Foundation for Autonomous Agents and Multiagent Systems.