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1、南京航空航天大学硕士学位论文AbstractWiththedevelopmentofaviation,fightsimulationbasedonvirtualrealityisdesignedandwidelyused.Inordertoenhancethevisualauthenticityandimmersionwhentraining,thesceneisoftenrenderedin3D.Forthespecialneedsofflightsimulatorvisualsubsystem,thispaperproposedamethodforthree-dim
2、ensionalreconstruction.Thismethodcanreducehumanworkloadandimprovetheefficiencyinensuringthescenereconstructioneffort.Thispaperrestorethethree-dimensionalstructureofthescenewith3Dinformationextractedfromimagecollectedbystereovisionsystemusingepipolargeometry.Basedonbasicmathgeometryandphy
3、sicaloptics,thepaperanalyzesimportanttechnicalmeansincurrentreconstructionalgorithmsandprocess,andthenproposeabasicflowofthree-dimensionalscenereconstructionsystem.Thispaperdiscussesthemostcriticalfeaturematchingproblemofreconstructionprocessindetail.Inordertoenhancetheaccuracyoffeaturem
4、atching,thispaperputsforwardthemulti-levelfeaturematchingmethod,throughpointfeature,linefeaturesandregionalcharacteristicsmatchlevel3matchingmethodforfeaturematching.Foreachfeaturematching,discussedthecharacteristicsofprimitiverespectivematchingmethod,multi-stagefeaturematching.Forlinear
5、featurematching,thispaperproposedmultistagematchingmethodbasedonmatrixandmultipleconstraintscharacteristics,effectivelysolvetheshadeexistintheprocessofextractionalgorithmandlinearfractureproblems.Forregionalmatch,onthebasisoftheglobalenergyfunctionandgraphcutsandotherconceptsandalgorithm
6、processes,andexperimentsshowthatthealgorithmusednotonlyintheareaoflowtexturematchinghighprecision,andthesceneclearboundarypointdisparitymapnoise,lessnon-usablevisualhandicap.Forthedifferentrequirementsofvisualdepthinflightsimulationvisualsystemthispaperproposesathree-dimensionalscenereco
7、nstructionmethodbasedonscalespace.Presentsmoredetailswhendepthofsceneisshallow,closerfromthesimulator.Forthescenefatherawayfromthesimulator,whichdepthisdeeper,lessdetailispresented.Thispapermakessimulationexperimentonthesealgorithm,resultsshowedthatthis3Dreconstructionmet
