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Título del libro: Visual Speech Recognition: Lip Segmentation And Mapping
Título del capítulo: 3D lip shape SPH based evolution using prior 2D dynamic lip features extraction and static 3D lip measurements

Autores UNAM:
ALFONSO GASTELUM STROZZI; JORGE ALBERTO MARQUEZ FLORES;
Autores externos:

Idioma:
Inglés
Año de publicación:
2009
Resumen:

This chapter describes a new user-specific 2D to 3D lip animation technique. 2D lip contour position and corresponding motion information are provided from a 2D lip contour extraction algorithm. Static face measurements are obtained from 3D scanners or stereovision systems. The data is combined to generate an initial subject-dependent 3D lip surface. The 3D lips are then modelled as a set of particles whose dynamic behaviour is governed by Smooth Particles Hydrodynamics. A set of forces derived from ellipsoid muscle encircling the lips simulates the muscles controlling the lips motion. The 3D lip model is comprised of more than 300 surface voxels and more than 1300 internal particles. The advantage of the particle system is the possibility of creating a more complex system than previously introduced surface models. © 2009, IGI Global.


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