IEEE Trans Vis Comput Graph - Approximation of Loop Subdivision Surfaces for Fast Rendering.

Tópicos

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Resumo

This paper describes an approach to the approximation of Loop subdivision surfaces for real-time rendering. The approach consists of two phases which separately construct the approximation geometry and the normal field of a subdivision surface. It firstly exploits quartic triangular B?zier patches to approximate the geometry of the subdivision surface by interpolating a grid of sampled points. To remedy the artifact of discontinuity of normal fields between adjacent patches, a continuous normal field is then reconstructed by approximating the tangent vector fields of the subdivision surfaces with quartic triangular B?zier patches. For regular triangles, the approach reproduces the associated subdivision patches, quartic 3-directional box splines.

Resumo Limpo

paper describ approach approxim loop subdivis surfac realtim render approach consist two phase separ construct approxim geometri normal field subdivis surfac first exploit quartic triangular bzier patch approxim geometri subdivis surfac interpol grid sampl point remedi artifact discontinu normal field adjac patch continu normal field reconstruct approxim tangent vector field subdivis surfac quartic triangular bzier patch regular triangl approach reproduc associ subdivis patch quartic direct box spline

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