基于区域特征分割的CAD模型局部搜索方法

中国机械工程 ›› 2013, Vol. 24 ›› Issue (12): 1611-1615,1675.

基于区域特征分割的CAD模型局部搜索方法

陶松桥1,2;黄正东3;马露杰4

1.武汉理工大学,武汉,430070
2.武汉交通职业学院,武汉,430065
3.华中科技大学,武汉,430074
4.浙江万向亿能动力电池有限公司,杭州,311215

出版日期:2013-06-25 发布日期:2013-07-11
基金资助:
国家自然科学基金资助项目(61173115,50935004);湖北省教育厅科技项目(B2013229)
National Natural Science Foundation of China（No. 61173115,50935004）;
Hubei Provincial Science and Technology Program of Ministry of Education of China（No. B2013229）

Local Retrieval for CAD Model Based on Region Feature Decomposition

Tao Songqiao1,2;Huang Zhengdong3;Ma Lujie4

1.Wuhan University of Technology,Wuhan,430070
2.Wuhan Technical College of Communications,Wuhan,430065
3.Huazhong University of Science and Technology,Wuhan,430074
4.Zhejiang Wanxiang Electric Vehicle Co., Ltd., Hangzhou,311215

Online:2013-06-25 Published:2013-07-11
Supported by:

National Natural Science Foundation of China（No. 61173115,50935004）;
Hubei Provincial Science and Technology Program of Ministry of Education of China（No. B2013229）

摘要/Abstract

摘要：

为弥补现有的CAD模型局部搜索方法应用于结构复杂模型时存在的数据量大和搜索效率低下的缺陷,提出一种基于区域特征分割的CAD模型局部搜索方法。首先依据模型的边界将其分割为一组数量最少的、有一定工程意义的、由一些相互连接的面组成的区域特征集合;接着对分割形成的区域特征及其邻接关系属性进行编码,由属性编码值的相似度度量得到相比较CAD模型的相似度。实验结果表明,该方法能够搜索到相关的CAD模型局部结构,并且搜索效率和精准程度能够满足实际需要。

关键词: 区域特征, 模型分割, 局部搜索, 属性邻接图

Abstract:

A CAD model retrieval method based on region feature decomposition was presented herein in order to resolve low retrieval efficiency problem for complex models.First,according to the salient geometric features of the mechanical part,the surface boundary of a solid model was divided into local
convex,concave and planar regions with the minimal number.Then,a kind of region
codes was given to surface region and their links in CAD model.And the similarity between two models was measured by the comparison of their
region codes.Experimental results show that this method is able to support local retrieval and its efficiency meets the requirements of practical applications.

Key words: region feature, model decomposition, local retrieval, attributed relational graph

中图分类号:

TP391

陶松桥1, 2, 黄正东3, 马露杰4. 基于区域特征分割的CAD模型局部搜索方法[J]. 中国机械工程, 2013, 24(12): 1611-1615,1675.

DAO Song-Qiao-1, 2, HUANG Zheng-Dong-3, MA Lou-Jie-4. Local Retrieval for CAD Model Based on Region Feature Decomposition[J]. China Mechanical Engineering, 2013, 24(12): 1611-1615,1675.

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