地矿测绘2023,39(2):13~18CN53-1124/TDISSN1007-9394SurveyingandMappingofGeologyandMineralResources基于倾斜三维模型的规则建筑物自动单体化方法研究*王英1,熊远社2,陈梦华1,刘述春1(1.湖南省地质地理信息所,湖南衡阳421001;2.深圳市规划和自然资源调查测绘中心,广东深圳518034)摘要:提出了一种聚类—混合整数优化方法,能实现模型快速自动单体化,解决倾斜三维模型数据量大、应用范围受限的问题。利用倾斜摄影三维模型建筑物的连接性,经聚类分析后,可达到建筑物分离的目的,再根据建筑物水平和垂直的特性对分离出来的建筑物进行立面自动提取,采用混合整数优化法构建体模型,实现三维模型的单体化。实验结果表明,此方法能达到预期目标,且效果比较理想。关键词:连接性;聚类分析;随机采样一致性;立面提取;混合整数优化;自动单体化中图分类号:P237;P208文献标识码:A文章编号:1007-9394(2023)02-0013-06ResearchonAutomaticMonomerMethodofRegularBuildingsBasedonObliquePhotography3DModelWANGYing1,XIONGYuan-she2,CHENMeng-hua1,LIUShu-chun1(1.HunanInstituteofGeologicalandGeographicInformation,HengyangHunan421001,China;2.ShenzhenPlanningandNaturalRe-sourcesInvestigatingSurveyingandMappingCenter,ShenzhenGuangdong518034,China)Abstract:Inthispaper,aclusteringmixedintegeroptimizationmethodisproposedtorealizetherapidandau-tomaticmonomerofmodelandsolvetheproblemoflargedatavolumeandlimitedapplicationrangeinoblique3Dmodels.Firstly,byutilizingtheconnectivityofobliquephotography3Dmodelbuildingsandconductingclusteranaly-sis,thegoalofbuildingseparationcanbeachieved.Then,basedonthehorizontalandverticalcharacteristicsofthebuildings,theseparatedbuildingsareautomaticallyextractedforfacades.Finally,amixedintegeroptimizationmethodisusedtoconstructthevolumemodel,achievingthemonomerof3Dmodel.Theexperimentalresultsshowthatthemethodcanachievetheexpectedgoalanditseffectisgood.Keywords:connectivity;clusteranalysis;randomsampleconsensus;facadeextraction;mixedintegerprogram-ming;automaticmonomer0引言倾斜三维模型能够让用户从多角度观察地物,更加真实地了解地物信息,且具有可量测性,将是未来应用最广泛的基础测绘成果之一。但倾...