Master's Dissertation
DOI
https://doi.org/10.11606/D.45.2011.tde-20230727-113407
Document
Author
Full name
Andrea Britto Mattos
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Title in Portuguese
Animação de faces tridimensionais baseada em registro estrutural
Keywords in Portuguese
Animação (Computação Gráfica)
Percepção Da Face
Abstract in Portuguese
O trabalho desenvolvido consiste em um sistema de animaçao facial que utiliza modelos de pessoas reais, obtidos por um escaner 3D. O banco de dados considerado é composto por modelos exibindo diferentes expressoes faciais que sao animados a partir de duas tecnicas. Um dos metodos consiste em aplicar um processo de interpolaçao linear utilizando as diferentes malhas do escaner como poses-chaves, enquanto, na outra abordagem, geram-se novas expressoes faciais a partir de uma face no estado de neutralidade, utilizando um modelo parametrico baseado no padrao MPEG-4. Em ambos os casos, é necessario buscar correspondencias ponto-a-ponto entre malhas faciais: para o primeiro, devem ser casadas as malhas referentes as poses-chaves interpoladas, e para o segundo, énecessario adaptar a malha neutra a um modelo parametrico que ir a definir a sua deformaçao durante o processo de animaçao.
Title in English
not available
Abstract in English
This work consists of a facial animation system that uses real three-dimensional models of people, acquired by a 3D scanner. The considered database is composed by models displaying different facial expressions that are animated using two techniques. One method is to apply a linear interpolation process using the scanned meshes as keyframes, while the other approach generates new facial expressions from a neutral face, using a parametric model based on the MPEG-4 animation standard. In both cases, it is necessary to define point-to-point correspondences between the facial meshes: in the first one, the interpolated meshes should be registered and, in the second, it is necessary to adapt the neutral mesh to a parametric model that will define its deformation during the animation process.
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Publishing Date
2023-07-27