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Bilinear interpolation for facial expression and metamorphosis in real-time animation

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Abstract

This paper describes a new method for generating facial animation in which facial expression and shape can be changed simultaneously in real time. A 2D parameter space independent of facial shape is defined, on which facial expressions are superimposed so that the expressions can be applied to various facial shapes. A facial model is transformed by a bilinear interpolation, which enables a rapid change in facial expression with metamorphosis. The practical efficiency of this method has been demonstrated by a real-time animation system based on this method in live theater.

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Arai, K., Kurihara, T. & Anjyo, Ki. Bilinear interpolation for facial expression and metamorphosis in real-time animation. The Visual Computer 12, 105–116 (1996). https://doi.org/10.1007/BF01725099

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