| Summary: | 碩士 === 國立臺灣大學 === 資訊工程學研究所 === 91 === Volumetric sculpting has been developed for years, but real application still lacks of accuracy and suffers from tremendous space consumption. To avoid these drawbacks, a volumetric sculpting system with adaptive resolution and feature preservation is proposed. Manipulating with extended Marching Cube algorithm (EMC), features of 3D mesh model are well preserved on multiresolution isosurface. To apply EMC to volumetric sculpting without defects, a feature refinement strategy is proposed to prevent out-of-range feature and undetected feature. Moreover, in order to represent the details of intersecting graver via curvature threshold, each surface is refined by level of detail (LOD) based on the curvature of the graver shape. Above all, our refinement strategy results in uniform and elegant representations for both carving and filling operations under multiresolution.
In our system, we also provide traditional functionalities of volumetric sculpting systems, such as carving, filling, color painting and importing models via voxelization. Furthermore, a force feedback device, the PHANToM, is also integrated in this system to provide realistic force simulation, which is based on the Tangent-Plane Force Model used in multiresolution octree.
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