Multiresolution Free Form Object Modeling with PointSampled Geometry

In this paper an efficient framework for the creation of 3D digital contentwith point sampled ge-ometry is proposed. A new hierarchy of shape representations with three levelsis adopted in this framework. Based on this new hierarchical shape representation, the proposedframework offers concise integration of various volumetric- and surface-based modeling techniques,such as Boolean operation, offset, blending, free-form defor-mation, parameterization and texturemapping, and thus simplifies the complete modeling process. Previously to achieve the same goal,several separated algorithms had to be used independently with inconsistent volumetric and surfacerepresentations of the free-form object. Both graphics and industrial applications are presented todemonstrate the effectiveness and efficiency of the proposed framework.

基于离散点采样的多分辨率的自由形体几何造型

经过二十余年的发展，三维几何模型已经被广泛的应用于工业工程上的计算机模拟和可视化。传统的几何模型通常基于样条计算。基于离散点采样的复杂自由形体几何造型是近年来随着激光扫描仪的发展而新兴的热门研究课题。通过离散点采样而得到的多分辨率的复杂几何造型现在被广泛的应用于高清晰度三维游戏开发、电子商务和电子图书馆。