Parameter-driven Level of Detail Derivation Method for Semantic Building Facade Model  

作　　者：WANG Yuefeng JIAO Wei 

机构地区：[1]Guangxi Key Laboratory of Spatial Information and Geomatics,Guilin University of Technology,Guilin 541004,China [2]College of Geomatics and Geoinformation,Guilin University of Technology,Guilin 541004,China [3]College of Environment and Resources,Guangxi Normal University,Guilin 541006,China

出　　处：《Journal of Geodesy and Geoinformation Science》2024年第3期57-75,共19页测绘学报（英文版）

基　　金：National Natural Science of China(No.42201463);Guangxi Natural Science Foundation(No.2023GXNSFBA026350);Special Fund of Guangxi Science and Technology Base and Talent(Nos.Guike AD22035158,Guike AD23026167);Guangxi Young and Middle-aged Teachers’Basic Scientific Research Ability Improvement Project(No.2023KY0056).

摘　　要：The relentless progress in the research of geographic spatial data models and their application scenarios is propelling an unprecedented rich Level of Detail(LoD)in realistic 3D representation and smart cities.This pursuit of rich details not only adds complexity to entity models but also poses significant computational challenges for model visualization and 3D GIS.This paper introduces a novel method for deriving multi-LOD models,which can enhance the efficiency of spatial computing in complex 3D building models.Firstly,we extract multiple facades from a 3D building model(LoD3)and convert them into individual semantic facade models.Through the utilization of the developed facade layout graph,each semantic facade model is then transformed into a parametric model.Furthermore,we explore the specification of geometric and semantic details in building facades and define three different LODs for facades,offering a unique expression.Finally,an innovative heuristic method is introduced to simplify the parameterized facade.Through rigorous experimentation and evaluation,the effectiveness of the proposed parameterization methodology in capturing complex geometric details,semantic richness,and topological relationships of 3D building models is demonstrated.

关 键 词：3D building model multi-Level of Detail(LoD) semantic facade model CITYGML 3D GIS 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术] P209[天文地球—测绘科学与技术]