逆向工程中三角剖分技術(shù)研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文逆向工程中三角剖分技術(shù)研究姓名：劉志剛申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械電子工程指導(dǎo)教師：尹周平丁漢20050401VAbstractReverseengineeringisoneimptantwayofproductcreativedevelopmentrapidmanufacturewhichiswidelyusedinautomobilehomeappliancesmouldentertainmentmedica

2、ltreatment.Asthekeytechnologyofreverseengineeringtriangulationisalwaysahotresearchtopic.Triangulationcandirectlychangepointdataintoentitymodel.Entitymodelsfromtriangulationmeshcanbemanufacturedintosamplesmouldswhichcansh

3、tenproducts’manufacturetimedesignperiodtorealizetheproductionofsmallbatchmanyvarieties.Furthermethereareentitymodelscreatedbypolygonmeshinmanyapplicationssuchascartoonvisionenvironmentwkbrowsephysicscanningcomputergames.

4、Ftheissuesoftheyoftriangulationitsapplicationsseveralkeytechnologiesoftriangulationaresystematicallystudiedimplementedinthisdissertation.Inthisthesisdatapointsareclassifiedintotoucheddatapointsuntoucheddatapointsbytheapp

5、roachhowtogetthem.Datapointsarealsoclassifiedintoscatteredpointsgridpointsscannedlinesfeaturepointslinesbytheirdistributingfeature.Sampledpointsareprocessedwhichincludeeditingpointscloudconstructingpointscloudinquiringac

6、terofpointscloud.ThethesisputsfwardtheacterresearchcontentofsurfacereconstructionintroducesbasicconceptstheiessuchasVonoimapDelaunaytriangulationrulesthatoptimizemeshtriangulationinthe2Dplane.Finallythethesisparticularly

7、discusseslocalDelaunaytriangulationarithmeticgrowingtriangulationarithmeticspiralingtriangulationarithmeticincludetheirrealizationadvantagesdisadvantages.Anewarithmeticanimprovedspiralingedgetriangulationarithmeticisputf

8、wardrealizedintheHTReSurfsystem.Thenewarithmeticusestheconceptof“neighbpoints”growsnewoutwardstrianglesaccdingtoboundarycircleofthespiralingedgetriangulationarithmeticsearchesneighbpointsofboundaryedgebyencirclingboxarit

9、hmeticproperlyaddsnaturalneighbsontoboundaryedge.Thustheimprovedarithmeticnotonlyavoidsputtingmeshtogetherbutalsofindsnaturalneighbs.ThetriangulationmeshisbasicallytheoptimizationDelaunaymesh.Thethesiscomparesanalysesrun

10、ningrapiditytriangulatingresultoverlappingholeofmeshotherperfmanceindex.Theexperimentresultsprovethatthenewarithmetichassomeapplicationvalue.FinallythereverseengineeringCADmodelingsoftwareHTReSurfisdesignedrealizedtoover