基于实例的形状不规则部件检索研究

Research on Case-Based Irregular Shape Components Retrieval and Indexing

提出了一种运用三维部件的外包立方体和体积比例法的实例检索算法 ,该算法能够较为精确地抽取外型与设计目标相似的形状不规则部件 .主要内容包括 :(1)使用了外包立方体和体积比例法进行形状不规则部件的特征分析 ;(2 )形状不规则部件相似度比较的数学模型和算法 ,即根据不规则部件的特征分析结果比较新部件和实例部件的相似度 ;(3)形状不规则部件的索引方法 ,提供可以进行不同精确度索引的记录 .

A case-based algorithm is proposed to retrieve the case whose shape is irregular and similar to the intended design object. The content includes: (1)using the enveloping cube and volume ratio to analyse the character of irregular shape; (2)working out the mathematical model and algorithm for evaluating the similarity of shapes; (3)establishing indexing system of irregular shape cases.