Resampling feature and blend regions in polygonal meshes for surface anti-aliasing

Efficient surface reconstruction and reverse engineering techniques are usu ally based on a polygonal mesh representation of the geometry: the resultin g models emerge from piecewise linear interpolation of a set of sample poin ts. The quality of the reconstruction not only depends on the number and de nsity of the sample points but also on their alignment to sharp and rounded features of the original geometry, Bad alignment can lead to severe alias artifacts. In this paper we present a sampling pattern for feature and blen d regions which minimizes these alias errors. We show how to improve the qu ality of a given polygonal mesh model by resampling its feature and blend r egions within an interactive framework. We further demonstrate sophisticate d modeling operations that can be implemented based on this resampling tech nique.