Journal of System Simulation ›› 2021, Vol. 33 ›› Issue (7): 1626-1637.doi: 10.16182/j.issn1004731x.joss.20-0791

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Fast Alignment of BIM Products Based on Structure Matching

Liu Xiaojun1, He Changyan2, Liu Chang3,*, Jia Jinyuan4   

  1. 1. College of Information Engineering, Jiaxing Nanhu University, Jiaxing 314001, China;
    2. Normal College, Jiaxing University, Jiaxing 314001, China;
    3. Shool of Information Technology, Nanchang Hangkong University, Nanchang 330063, China;
    4. School of Software Engineering, Tongji University, Shanghai 201804, China
  • Received:2020-10-16 Revised:2020-11-16 Online:2021-07-18 Published:2021-07-20

Abstract: The fast alignment of BIM products based on structure matching is realized. An Item-based Structure Graph (ISG) is proposed as the structure-aware shape descriptor for BIM products. An improved graph matching algorithm upon Factorized Graph Matching (FGM) is implemented in ISG matching, in which the mismatch caused by symmetry switching is avoided. Further extension is made to support the alignment under partial matching for BIM products from the same family. The experiment result shows that ISG can meet the characteristics of BIM products, improve the efficiency and accuracy, and can be applied in dealing with products alignment, BIM data lightweighting, etc.

Key words: Building Information Modeling(BIM) product, graph matching, shape alignment, Industry Foundation Classes(IFC), lightweight

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