Jianwen, ZhouFeng, LinSoon, Seah HockK. Mueller and A. Kaufman2014-01-292014-01-2920013-211-83737-X1727-8376https://doi.org/10.2312/VG/VG01/103-117This paper presents a framework we have developed for modeling and manipulation of volumetric data sets. It is a set of new functions integrated into a CAD system. We shall address freeform modeling through voxelization of NURBS, voxel-based sculpting and the interface to CAD and Rapid Prototyping systems.