曲線曲面匹配技術(shù)研究.pdf

1、南京航空航天大學碩士學位論文曲線曲面匹配技術(shù)研究姓名：劉爽申請學位級別：碩士專業(yè)：航空宇航制造工程指導教師：張麗艷20050201曲線樸由叢削技術(shù)夥究AbstractCurveandsurfacematchingaimstoachieveobjectrecognition，similaritymeasurementandgluingthemtogetherbymeansofobjectanalysis，transformationand

2、featureextractionThistechnologyisofgreatimportanceinavarietyofareas，suchasmeasuringandmodeling，virtualrealityreconstructionofarchaeologicalfragments，medicalimageregistrationandmoleculesstructuredesignofdrugThemajorityoft

3、hisdissertationfocusesontheresearchof2Dcurvematching，3DcurvematchingandsurfacematchingThefollowingaretheprimarycontents：●Severalmethodsaboutcurvaturecalculationof2DfreeformCurvealestudiedAcurvematchingmethodbasedonHausdo

4、rffdistancethatusegfeatureisproposedA2DcurvematchingthroughcomparingthesimilaritybetweenfeaturepointsandfeaturesegmentsarerealizedThisalgorithmiseffectivefor3Dcurvematchingtoo●Similarity—matrixbasedspacecurvematchingalgo

5、rithmisresearchedAnefficientalgorithmfor3DcurvematchingisinnovativelypresentedCurvaturesofdiscretepointson3DcontourarecalculatedbyquinticB—splineinterpolationThealgorithmensurespreferablematchingprecision，andmeanwhilesav

6、escomputationalexpense●VarietyofexpressingmethodsofsurfaceenergyisstudiedwhichderivefromgeometrypropertyandphysicaltransfigurationenergySurfaceenergyisestimatedfromthedifferentialgeometrycharacterofmeshsurfaceAsurfacemat

7、chingalgorithmisproposedandrealizedThecomparabilityofsurfacesiscomparedbytheenergydifferencebetweensurfacesKeywords：curvematching，surfacematching，Hausdorffdistance，multiscaletechnique，similaritymatrix，geometrichashing，su