基于几何结构的零件切片轮廓特征点提取方法  

Extraction Methods of Slicing Outline Feature Points of Parts Based on Geometrical Structures

作　　者：张镇[1] 吕秋娟[1] 郑重[1] 

机构地区：[1]第二炮兵工程学院

出　　处：《工具技术》2009年第10期31-35,共5页Tool Engineering

摘　　要：零件功能的多样性决定了其几何结构的多样性。为深入理解产品的设计意图和获得零件的精确描述,在对零件的三维数据进行预处理时,需要针对不同结构的零件,运用不同的处理方法。本文对预处理中的特征点提取方法做了一些探索。首先,根据传统分类法将零件分为规则结构零件和非规则结构零件,具体描述了其特征点性质;然后,分别采用对应的特征点提取算法对其进行处理;最后,通过实例验证了该方法的可行性。The multiplicity of part function determines the multifon＇nity of geometrical structure of paris. In order to in-depth tmderstand the design intention and get the precise description for products, the corresponding arithmetic should be used for parts with different geometrical structures during pretreating its 3D data. In this paper, the extractions of feature points in the pretreatment were explored. First, parts were distinguished as regular structure parts and non-regular structure parts according to the convention, and properties of each kind of feature points were described; then, corresponding extraction method was adopted to treat two kinds of feature points. Finally, the feasibility of this method was validated by an example.

关 键 词：特征点 提取 规则结构 非规则结构 自适应支撑区域 最小误差逼近 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]