Bulletin of Surveying and Mapping ›› 2025, Vol. 0 ›› Issue (2): 1-6.doi: 10.13474/j.cnki.11-2246.2025.0201

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Construction method of multi-dimensional building single body model

Lü Pengchao1,2,3,4, LI Haiyang1,2,3,4, JIANG Ling1,2,3,4, LIANG Ming1, WEI Hong2,3,4, ZHANG Dapeng2,3,4   

  1. 1. School of Resources and Environment, Anhui University, Hefei 230601, China;
    2. School of Geographic Information and Tourism, Chuzhou University, Chuzhou 239000, China;
    3. Anhui Provincial Key Laboratory of Realistic Geographical Environment, Chuzhou University, Chuzhou 239000, China;
    4. Anhui Center for Collaborative Innovation in Geographical Information Integration and Application, Chuzhou 239000, China
  • Received:2024-06-07 Published:2025-03-03

Abstract: The current live 3D building model data volume is huge, which brings challenges to model storage and real-time loading display. However, the existing research mainly focuses on the monolithicization, lightweighting and visualization of the original building model, which is difficult to meet the needs of urban spatial analysis and management under different application scenarios. For this reason, this paper proposes a multi-dimensional monolithic model construction method for building solid models. The method is based on OSGB data generated by inclined photography modeling, and cuts out the monolithic model of the building by using the vector contour of the building, then simplifies the building model by using the quadic error metrics (QEM) algorithm, and determines the geometrical parameters and morphological features of the building models of different simplification levels by comparing the different simplification levels. By comparing the geometric parameters and morphological features of building models of different simplification levels, the degree of simplification between building models of different dimensions is determined, and the construction of building monolithic models of different dimensions is finally realized. The experimental results show that the multi-dimensional monolithic construction of the 3D building model meets the requirements of level of details (LOD) in city geography markup language (CityGML), and compares favorably with the traditional building information modeling (BIM),it has a higher degree of automation.The method can complete the conversion between building models with limited data, and can construct 3D building model monoliths with different dimensions and apply them to different levels and scenarios to meet the needs of urban spatial analysis and management.

Key words: realistic 3D, QEM algorithm, model simplification, feature extraction, multi-dimensional building model

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