第５２卷第６期测绘学报Vol．５２,No．６２０２３年６月ActaGeodaeticaetCartographicaSinicaJune,２０２３引文格式:屈文虎,刘振东,蔡昊琳,等．顾及场景连通性的混合式SfM方法[J]．测绘学报,２０２３,５２(６):９６６Ｇ９７９．DOI:１０．１１９４７/j．AGCS．２０２３．２０２２０４４８．QUWenhu,LIUZhendong,CAIHaolin,etal．AhybridSfMmethodconsideringsceneconnectivity[J]．ActaGeodaeticaetCartographicaSinica,２０２３,５２(６):９６６Ｇ９７９．DOI:１０．１１９４７/j．AGCS．２０２３．２０２２０４４８．顾及场景连通性的混合式SfM方法屈文虎１,刘振东１,蔡昊琳２,张帅哲２１．中国测绘科学研究院,北京１００８３０;２．山东科技大学测绘与空间信息学院,山东青岛２６６５９０AhybridSfMmethodconsideringsceneconnectivityQUWenhu１,LIUZhendong１,CAIHaolin２,ZHANGShaizhe２１．ChineseAcademyofSurveyingandMapping,Beijing１００８３０,China;２．CollegeofGeodesyandGeomatics,ShandongUniversityofScienceandTechnology,Qingdao２６６５９０,ChinaAbstract:SfMmethodhasachievedgreatsuccessin３Dsparsereconstruction,butitstillmeetsseriouschallengesinlargeＧscalescenereconstruction．Aimingatsolvingtheproblemoflooseimagedistribution,lowefficiencyofsubclusterexpansionandweakrobustnessofsubclustermerginginexistinghybridSfMmethods,ahybridSfMmethodconsideringsceneconnectivityisproposedinthispaper．Firstly,amultifactorjointscenedivisionalgorithmbasedonnormalizedcutisproposed,whicheffectivelysolvestheproblemoflooseimagespacedistributioninsubclustersafterscenedivision;Secondly,asubclusterbalancedexpansionalgorithmconsideringpartitionconnectivityisproposedtoimprovetheexpansionefficiencyandconnectivitybetweensubclusters;Then,aqualitycheckandsecondaryreconstructionmechanisminthelocalreconstructionstageareintroducedtoeliminatetheinfluenceofsubclusterswithunqualifiedlocalreconstructionqualityonmerging,andasubclustermergingalgorithmconsideringtheconnectivitybetweenclustersisproposedtoimplementtherobustmergingamongsubclusters．Finally,experimentalvalidationisconductedusingmultipleopendatasetsandmultiＧviewdatasets,andtheresultsshowthatthemeth...
