research on impact of ground control point distribution on image geometric rectification based on voronoi diagram毕业设计论文完整版设计论文.doc

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1、（此文档为word格式，下载后您可任意编辑修改！）ResearchonImpactofGroundControlPointDistributiononImageGeometricRectificationBasedonVoronoiDiagramAbstractWiththedevelopmentofremotesensingsatellites,thedataquantityofremotesensingimageisincreasingtremendously,whichbringsahugeworkloadtotheimagegeometriccorrectionthr

2、oughmanualgroundcontrolpoint(GCP)selection.GCPsautomaticallyselectedbasedonsoftwareisoneoftheeffectivemethodstocutdownmanualoperation.TheGCPsobtainedfromthatwayisgenerallyredundant.Inthispaper,aftersomeexistingmethodsaboutautomaticoptimizationofGCParesummarized,anewmethodofautomaticoptimiza

3、tionofGCPbasedonVoronoiDiagram(Thiessenpolygon)isproposed.ThismethodusestheratioofThiessenPolygonmax-minareageneratedbyGCPasthebasisandfilterGCPfromtheoverfulloneswithoutmanualsubjectivityforbetteraccuracy.Experimentsinthispaperalsodemonstratedtherelationshipbetweentheaccuracyofgeometriccor

4、rectionandthedistributionofGCP.©2011PublishedbyElsevierLtd.Selectionand/orpeer-reviewunderresponsibilityoftheIntelligentInformationTechnologyApplicationResearchAssociation.©2011PublishedbyElsevierLtd.Selectionand/orpeer-reviewunderresponsibilityof[nameorganizer]Keywords:GeometricCorrection;

5、GCPDistribution;DelaunayTriangulation;ThiessenPolygon1.IntroductionRemotesensingisbeingusedinthedevelopmentofnationaleconomywidely.Duetotheremotesensingimagingmechanism,theimagescannotbeusedwithoutaseriesofpre-processes,suchasnoisefiltering,radiometriccorrection,geometriccorrection.Groundco

6、ntrolpoint(GCP)selectionisanimportantstepinthegeometriccorrectionofremotesensingimage.Theprecisionofgeometriccorrectiondependsonthequantity,accuracyanddistributionofthegroundcontrolpoint(GCP)[1].GCPisanimportantsourceoffundamentaldataintheaerialphotographandremotesensingimage'sGeometricCorr

7、ection[2].ThenumberofGCPsthatisneededintheprocessofGeometricCorrectionisdeterminedbydifferentkindsofreasons,including:methodoftheoriginalimagecorrection,thetypeoftheoriginalimageandtherequiredmappingaccuracyofthesoftwarethatisused.Therearemanywaystocolle