Computer graphics (2nd ed. in C): principles and practice
Computer graphics (2nd ed. in C): principles and practice
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This paper provides an overview of the activities that have led to the development of a prototype application of a "talking head" compliant with MPEG-4 specification. The work done so far fits in the context of one of the recent work-items defined by the ISO/IEC JTC1/SC29/WG11 world-wide known as MPEG. This ISO Working Group is now in the process of defining a unifying framework where natural and synthetic audio-visual objects can be combined and rendered as a unique bouquet of synchronised interactive media. The developed facial animation system implements the following features: animation of predefined / downloaded face models, animation of face models driven either by speech synthesis applications or by MPEG-4 animation parameters. To improve photo-realism, face models can be texture mapped and calibrated according to the countenances of real people.