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Mining method based on common structure of three-dimensional assembly model

A technology for assembling models and three-dimensional models, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of ignoring model geometric shape information, low retrieval efficiency, etc., to reduce work complexity, reduce scale, The effect of improving efficiency

Active Publication Date: 2019-11-01
XIAN TECH UNIV
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Problems solved by technology

[0005] The purpose of this invention is to solve the problems that the common structure of the existing 3D assembly model is mostly concentrated on the part level, the geometric shape information of the model is ignored, and the retrieval efficiency is low. A Method of Discovering Common Structure Based on 3D Assembly Model

Method used

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  • Mining method based on common structure of three-dimensional assembly model
  • Mining method based on common structure of three-dimensional assembly model
  • Mining method based on common structure of three-dimensional assembly model

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Embodiment

[0048] This article uses figure 1 A set of fixture models shown in the figure is taken as an example to verify the effectiveness of the above-mentioned common structure mining method for 3D assembly models.

[0049] The technical solution provided by the present invention is: a mining method based on the common structure of the three-dimensional assembly model. First, based on the attribute adjacency graph of each part of the three-dimensional assembly model, the attribute information of the assembly feature is kept, and the attribute information of the non-assembly feature is simplified to form the attribute Then, based on the assembly relationship between the parts of the 3D assembly model, the attribute-based assembly feature adjacency graph of the parts is combined to form the attribute adjacency graph of the 3D assembly model; finally, the 3D assembly model is extracted by frequent subgraph mining algorithm Common structure, so as to achieve the purpose of reuse. Accordi...

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Abstract

The invention relates to the technical field of three-dimensional model reuse, in particular to a mining method based on a common structure of a three-dimensional assembly model. The method comprisesthe following steps of: firstly, keeping assembly characteristic attribute information, simplifying non-assembly characteristic attribute information and forming an attribute assembly characteristic adjacency graph on the basis of an attribute adjacency graph of each part of the three-dimensional assembly model; secondly, combining the attribute assembly characteristic adjacency graphs of the parts to form a three-dimensional assembly model attribute adjacency graph based on the assembly relationship among the parts of the three-dimensional assembly model; and finally, extracting a common structure of the three-dimensional assembly model through a frequent sub-graph mining algorithm. According to the method, the accuracy and design efficiency of product design and manufacturing can be improved. The flexibility of information reuse of the three-dimensional assembly model is improved. The mining and the reuse of related information resources by product design and manufacturing enterprises are effectively improved.

Description

technical field [0001] The invention relates to the technical field of three-dimensional model reuse, in particular to a method for discovering common structures based on three-dimensional assembly models. Background technique [0002] The reuse of 3D models mainly focuses on model retrieval technology and the technology of discovering public reusable local structures. Model retrieval has achieved certain results, and the discovery of public reusable local structures has attracted more attention because it can give designers more efficient and higher-quality reuse resources, and has broad application prospects. Since the beginning of the 21st century, with the rapid development of information science and technology and product modeling, related industries have gradually increased their requirements for informatization. It is necessary to develop public reusable 3D assembly model information from multiple directions and perspectives to improve the research and development eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 乔虎何俊姚慧赵元杰安嘉祥何江徐昭晖师治全
Owner XIAN TECH UNIV
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