In this paper we introduce an efficient view dependent refinement
technique well-suited to adaptive visualization of 3D triangle meshes
on a graphic terminal. Our main goal is the design of fast and robust
smooth surface reconstruction from coarse meshes. We demonstrate that
the sqrt{3} subdivision operator recently introduced by Kobbelt offers
many benefits, including view-dependent refinement, removal of
polygonal aspect and highly tunable level of detail adaptation. In
particular, we propose a new data structure that requires neither
edges nor hierarchies for efficient and reversible view-dependent
refinement. Results on various 3D meshes illustrate the relevance of
the technique.