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Game Programming Gems 8 by Adam Lake

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Chapter 2.1. A Versatile and Interactive Anatomical Human Face Model

Marco Fratarcangeli

In a compelling virtual world, virtual humans play an important role in improving the illusion of life and interacting with the user in a natural way. In particular, face motion is crucial to represent a talking person and convey emotive states. In a modern video game, approximately 5 to 10 percent of the frame cycle is devoted to the animation and rendering of virtual characters, including face, body, hair, cloth, and interaction with the surrounding virtual environment and with the final user. Facial blend shapes are commonly adopted in the industry to efficiently animate virtual faces. Each blend shape represents a key pose of the face ...

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