面向设计重用的三维CAD模型局部结构检索方法

发布时间：2018-06-21 20:24

本文选题：三维CAD模型 + 局部结构检索　；参考：《农业机械学报》2017年07期

【摘要】：为了更好地实现面向设计领域的三维CAD模型设计信息的有效重用,提出了一种融合语义的三维CAD模型局部结构检索方法。首先以设计特征作为设计语义信息的基础载体,对三维CAD模型进行结构化表征,并用特征属性邻接图来表示;然后设计能够捕捉不同层次信息的特征描述子,构建融合语义的特征相似性评价模型;最后采用子图同构算法计算查询局部结构与模型库中零件的特征属性邻接图的特征匹配对,以此计算相匹配局部结构的相似度。实验结果表明,该方法能够较好地实现融合语义的三维CAD模型局部结构检索,可以有效地支持面向农机设计领域的三维CAD模型设计信息的重用。基于检索的设计重用方法可为农机装备数字化设计中各类成果的有效重用提供多粒度、精确化和智能化的方法。
[Abstract]:In order to realize the effective reuse of 3D CAD model design information in the field of design, a semantic retrieval method for local structure of 3D CAD model is proposed. Firstly, the design feature is used as the basic carrier of the design semantic information, the 3D CAD model is structured and represented by the feature attribute adjacency graph, and then the feature descriptor which can capture different levels of information is designed. A feature similarity evaluation model based on semantic fusion is constructed, and the similarity degree of matching local structure is calculated by using subgraph isomorphism algorithm to calculate the feature matching pairs between the query local structure and the feature attribute adjacent graph of the parts in the model library. The experimental results show that this method can realize the local structure retrieval of 3D CAD model with fusion semantics, and can effectively support the reuse of 3D CAD model design information in the field of agricultural machinery design. Retrieval based design reuse method can provide multiple granularity, precision and intelligence for the effective reuse of all kinds of achievements in the digital design of agricultural machinery and equipment.
【作者单位】：山东农业大学机械与电子工程学院;中国农业大学工学院;山东省园艺机械与装备重点实验室;
【基金】：国家重点研发计划项目(2016YFD0700500) 山东省“双一流”奖补资金项目(SYL2017XTTD14) 山东省自然科学基金项目(ZR2015EL022) 山东省现代农业产业技术体系水稻创新团队项目
【分类号】：TP391.72

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