Résumé: Arbitrary triangle mesh is a collection of 3D triangles without any shape or boundary restrictions. Progressive mesh ( PM) is a multiresolution representation that de .nes continuous level of detail approximations for arbitrary triangle meshes. PM representation of a mesh can be processed to obtain a mesh approximation between the original and the base ( simpli .ed) mesh. Furthermore, PM can be re .ned in a view- dependent fashion to obtain a simpler mesh within a perceptual image quality. In this paper, we introduce an adaptation and improvements in our implementation for view- dependent re .nement of progressive meshes. Essentially, we use a similar approach to Hoppe ’s framework ( ACM Comput. Graphics, Proceedings of SIGGRAPH ’97, August 1997, pp. 189 –198) for view- dependent re .nement with a different algorithm for constructing PM representation. Our method is simple to implement and fast enough to achieve interactive frame rates for moderately complex models ( models containing hundreds of thousands of polygons) on a machine with polygon rendering hardware. Moreover, our implementation allows changes to topology and achieves a simpler and sometimes more realistic re .nements.

Langue: Anglais