V. ANANTHA NATARAJAN et al: MODELING OF 3D HUMAN FACE FOR TAMIL VISUAL SPEECH SYNTHESIS

The visual equivalent of human face exhibiting articulatory expression of a unit of sound in spoken language is termed as Viseme. The Visemes can be used to teach hearing impaired students visually and effectively. In this paper a method to construct three dimensional human faces from a single 2D image is proposed. By this method a generic 3D mesh of human face is deformed using the calculated feature points from 2D images. The method consists of the following steps namely locate corresponding feature vertices in both 2D image and the generic 3D mesh, calculating the corresponding 3D co-ordinates of the 2D feature points and relative camera position and finally deforming the generic 3D mesh using the Radial Basis Function (RBF) based interpolation. Later the constructed three dimensional models can be animated by morphing different visemes together. The inner articulatory organs are modelled using Java3D and blended with these constructed 3D dimensional units.