简介:CoordinatesofthekeyfacialfeaturepointscanbecapturedbymotioncapturesystemOPTOTRAKwithreal-timecharacterandhighaccuracy.Thefacialmodelisconsideredasanundirectedweightedgraph.Byiterativelysubdividingtherelatedtriangleedges,thegeodesicdistancebetweenpointsonthemodelsurfaceisfinallyobtained.TheRBF(RadialBasisFunctions)interpolationtechniquebasedongeodesicdistanceisappliedtogeneratedeformationofthefacialmeshmodel.Experimentalresultsdemonstratethatthegeodesicdistancecanexplorethecomplextopologyofhumanfacemodelsperfectlyandthemethodcangeneraterealisticfacialexpressions.
简介:Wepresentamethodthatcombinesperformance-drivenmethodwithsegmented3Dblendshapemodelstoanimateaface.Firstwepreparekeysampleexamplesandcorrespondingkeytargetexamples.Nextwesegmentthewholefaceintotworegions,foreachregionwereducedimensionalityofsourceexamplesusingPACintoabstractspacewhichisdefinedbytruncatedPCAeigenvectors.Thenforeachexamplewefixthecardinalbasefunction,whichcandeterminetheweightofthetargetexample.Finally,intheanimationstagewecomputetheweightofeachexampleforeachframeandaddtheweighteddisplacementvectorsofeachregiononthegeneralfacemodel.
简介:Theplatformconsistsofthreelayers:themanagementservicelayeradministerstheinfrastructureofthewholeplatform;theintegrationservicelayerprovidesthecoreintegrationfunctionsandtheuserservicelayersatisfiestheenterpriseintegrationdemands.Forthepurposeofaccommodatingthecharacteristicsofmoldmakingcompanies,anevent-drivenenterpriseservicebusworkingastheheartoftheplatformisrealized.AprototypesystemcombiningWebservices,BusinessProcessExecutionLanguage(BPEL)andWebOntologyLanguage(OWL)isimplemented.Theclientsandsuppliersandtheapplicationsofmoldmakingcompanyareintegratedinaloosely-coupledwaythroughtheservicesprovidedbytheplatform.Meanwhilethesharingofdataandknowledge,andthecoordinationofbusinessprocessarerealized.Byadoptingtheplatform,anewapproachisprovidedtosolvetheproblemofdesignandmanufactureintegrationforintraandintermoldmakingcompanies.