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2010

Volumetric modeling with diffusion surfaces

8 years 6 months ago
Volumetric modeling with diffusion surfaces
The modeling of volumetric objects is still a difficult problem. Solid texture synthesis methods enable the design of volumes with homogeneous textures, but global features such as smoothly varying colors seen in vegetables and fruits are difficult to model. In this paper, we propose a representation called diffusion surfaces (DSs) to enable modeling such objects. DSs consist of 3D surfaces with colors defined on both sides, such that the interior colors in the volume are obtained by diffusing colors from nearby surfaces. A straightforward way to compute color diffusion is to solve a volumetric Poisson equation with the colors of the DSs as boundary conditions, but it requires expensive volumetric meshing which is not appropriate for interactive modeling. We therefore propose to interpolate colors only locally at user-defined cross-sections using a modified version of the positive mean value coordinates algorithm to avoid volumetric meshing. DSs are generally applicable to model many ...
Kenshi Takayama, Olga Sorkine, Andrew Nealen, Take
Added 22 May 2011
Updated 22 May 2011
Type Journal
Year 2010
Where TOG
Authors Kenshi Takayama, Olga Sorkine, Andrew Nealen, Takeo Igarashi
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