基于倾斜摄影建筑模型的采集精度改进与评估.docx

基于倾斜摄影建筑模型的采集精度改进与评估
摘要：
本文主要研究了基于倾斜摄影技术的建筑模型采集精度方面的问题及其评估方法。首先，介绍了倾斜摄影的基本原理和建筑模型的采集流程；然后，分析了建筑物表面特征的影响因素，提出了一种基于姿态校正和多图像匹配的精度改进方法；最后，通过对实际建筑物场景进行了实验研究，对所提出方法进行了评估，并与其他方法进行了比较。
关键词：倾斜摄影，建筑模型，采集精度，评估方法
1.Introduction
Withthedevelopmentofcomputertechnologyanddigitalimagingtechnology,3Dmodelinghasbecomeincreasinglypopularinvariousfields,suchasarchitecture,engineering,andculturalheritage.Asanimportantpartof3Dmodeling,buildingmodelinghasattractedsignificantattentionduetotheincreasingdemandforaccuratemodelingofbuildings.
Aerialphotogrammetry,asatraditionalmethodforbuildingmodeling,hasbeenwidelyusedinpracticalapplications.However,aerialphotogrammetryhassomelimitationsintermsofaccuracy,especiallyforcomplexbuildingswithirregularshapesandsurfaces.Inrecentyears,therapiddevelopmentofdigitalphotographyandcomputertechnologyhasenabledtheuseofobliquephotogrammetryforbuildingmodeling,whichcanprovidemoreaccurateanddetailedgeometricinformationofbuildings.
Inthispaper,wefocusontheproblemofaccuracyinbuildingmodelingusingobliquephotogrammetry.First,weintroducethebasicprinciplesofobliquephotogrammetryandtheprocessofbuildingmodeling.Second,weanalyzethefactorsthataffecttheaccuracyofbuildingsurfacefeaturesandproposeanaccuracyimprovementmethodbasedonattitudecorrectionandmulti-imagematching.Finally,weconductexperimentsonactualbuildingscenestoevaluatetheproposedmethodandcompareitwithothermethods.
2.ObliquePhotogrammetryandBuildingModeling
Obliquephotogrammetryisatechniquethatuseshigh-resolutiondigitalcamerasmountedonanaerialplatformtocapturemultipleimagesofabuildingfromdifferentviewpoints,angles,andheights.Theimagesareprocessedbyphotogrammetricsoftwaretogeneratea3Dmodelofthebuilding.
Buildingmodelingusingobliquephotogrammetryinvolvesseveralsteps,includingimageacquisition,orientationandcalibration,imagematchingandstereomeasurement,surfacereconstruction,andtexturemapping.Inimageacquisition,thecamerasystemissetuptocaptureobliqueimagesofthebuildingfromdifferentangles,typicallyrangingfrom30to70degre