基于轨迹包络的雕塑实体特征描述

FEATURE DESCRIPTION OF SCULPTURED OBJECT BASED ON PATH ENVELOPMENT

本文提出了用“轨迹包络法”来构造雕塑型体表面，该方法能有效地记录被雕表面的几何信息，保留并继承雕塑艺术风格。在此基础上建立了雕塑型体构造的层次结构，提出并分析了适于雕塑型体特征描述的四种拓扑运算关系，即拼合、贴合、嵌套与扭变等，为复杂雕塑型体特征造型提供了有利条件。

 “path envelopment method” is suggested to construct sculptured surfaces. It is effective enough to record their geometric information and artistic style of the sculptured surfaces. The hierarchical structure of the method is formulated. Four kinds of topological operations suitable for sculptured feature descriptions, i.e. joining, sticking, inserting, and skewing, are presented and studied, and form a proper base for sculptured feature modeling.