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Real-time virtual humans

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1 Author(s)
Badler, N.I. ; Dept. of Comput. & Inf. Sci., Pennsylvania Univ., Philadelphia, PA, USA

The last few years have seen great maturation in the computation speed and control methods needed to portray 3D virtual humans that are suitable for real interactive applications. We first describe the state of the art, then focus on the particular approach taken at the University of Pennsylvania with the Jack system. Various aspects of real-time virtual humans are considered, such as their appearance and motion, interactive control, autonomous actions, gestures, attention, locomotion and multiple individuals. The underlying architecture consists of a sense-control-act structure that permits reactive behaviors to be locally adaptive to the environment, and a PaT-Net (parallel transition network) parallel-finite-state machine controller that can be used to drive virtual humans through complex tasks. We then argue for a deep connection between language and animation and describe current efforts in linking them through two systems: the Jack Presenter and the JackMOO extension to lambdaMOO. Finally, we outline a parameterized action representation for mediating between language instructions and animated actions

Published in:

Computer Graphics and Applications, 1997. Proceedings., The Fifth Pacific Conference on

Date of Conference:

13-16 Oct 1997