Maurizio Costa

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In this paper a methodology is proposed for speech driven facial animation. Specifically, the proposed technique is not intended to reproduce lips movements accordingly with the speech content, but the goal is to reproduce the complex set of facial movements and expressions related with the emotional content of the speech. An original approach has been(More)
The technique proposed in this paper provides operative indications for implementing 3D head models compliant to the facial parameters recently standardized in MPEG-4, capable of being animated for reproducing the behavior of true human faces. The major contribution of this paper consists of an algorithmic proposal for MPEG-4 compliant model animation,(More)
In this paper the complete framework of a software package for real-time animation of 3D facial models according to the MPEG-4 specifications is described. The focus is mainly on the algorithmic solution that has been adopted for scaling the polygon mesh to a level of complexity suited to the specific hw/sw profile of the platform that hosts the decoder.(More)
In this paper we propose an efficient algorithm for exploiting the Facial Animation Parameter interpolation modality specified by the MPEG-4 standard in order to allow very low bitrate trasmission of the animation parameters. The proposed algorithm is based on a comprehensive analysis of the cross-correlation properties that characterize FAPs, which is here(More)
The This paper describes the complete implementation of a MPEG-4 facial animation decoder. The various adopted solutions are presented with reference to the major technical issues that are involved, namely the 3D interpolation algorithm for face calibration, the mesh deformation algorithm for model animation and the mesh simplification algorithm. The most(More)
The INTERFACE project aims at improving user interaction with web-based applications by using computer-animated characters to implement virtual guides, avatars, or teachers. The tools developed within the project have been used to build a demonstration Anty's postcards website. Within the system, users send virtual postcards in which Anty, a cartoon-like(More)
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