简介:Currently,3Dprintingofthecharacterdollsisaverypracticalapplicationfortheaverageperson.Butthemodelofdollwhichcanbeobtainedisstaticsothepostureofthedollissingle.Ontheotherhand,themodificationofthemodelisverydifficulttonon-professions.Thispaperproposesanrapidgenerationmethodofcharacterdollwithrotatablelimbs,whichisthroughaddingthespherejointtothedoll’smodelautomatically.Afterthemodelissegmentedbydrawingalineinteractively,thespherejointiscreatedbasedonthesegmentationboundarythroughentitymodelingmethod.Lastlythetwomodelsofthedollandthejointarecompositedandprinted.Somedoll’smodelaretestedontheFDM(FusedDepositionModeling)3Dprinterusingthisprocess.Theresultsaremoreinterestingandtheefficiencyhasbeengreatlyimprovedcomparedwithmodifyingthemodelmanually.
简介:Mobileplatformisnowwidelyseenasapromisingmultimediaservicewithafavorableusergroupandmarketprospect.Tostudytheinfluenceofmobileterminalmodelsonthequalityofsceneroaming,aparametersettingplatformofmobileterminalmodelsisestablishedtoselecttheparameterselectionandperformanceindexondifferentmobileplatformsinthispaper.Thistestplatformisestablishedbasedonmodeloptimalityprinciple,analyzingtheperformancecurveofmobileterminalsindifferentscenemodelsandthendeducingtheexternalparameterofmodelestablishment.Simulationresultsprovethattheestablishedtestplatformisabletoanalyzetheparameterandperformancematchinglistofamobileterminalmodel.
简介:TheprecisionforgingprocessissimulatedbycommercialsoftwareDeform3Dusingarigidvisco-plasticmodeltopredictthestatusofmetalflowandthedistributionofequivalentplasticstrain,providingguidanceformakingdecisionontheoptimalchoiceofprocessparametersandmouldstructure.TrialforgingwasusedtoverifytheeffectivenessofFEMsimulationresults.
简介:Animprovedself-organizingfeaturemap(SOFM)neuralnetworkispresentedtogeneraterectangularandhexagonallatticwithnormalvectorattachedtoeachvertex.Aftertheneuralnetworkwastrained,thewholescattereddataweredividedintosub-regionswhereclassifiedcorewererepresentedbytheweightvectorsofneuronsattheoutputlayerofneuralnetwork.Theweightvectorsoftheneuronswereusedtoapproximatethedense3-Dscatteredpoints,sothedensescatteredpointscouldbereducedtoareasonablescale,whilethetopologicalfeatureofthewholescatteredpointswereremained.
简介:声明:本十大安全漏洞由NSFOCUS(绿盟科技)安全小姐根据安全漏洞的严重程度,利用难易程度,影响范围等因素综合评出,仅供参考。Http://www.nsfocus.net/index.php?act=sec_bug&do=top_ten
简介:SystemoptimizationplaysacrucialroleindevelopingVRsystemafter3Dmodeling,affectingthesystem'sImmersionandInteractionperformanceenormously.Inthisarticle,severalkeytechniquesofoptimizingavirtualminingsystemwerediscussed:optimizing3DmodelstokeepthepolygonnumberinVRsystemwithintargethardware'sprocessingability;optimizingtexturedatabasetosavetexturememorywithperfectvisualeffect;optimizingdatabasehierarchystructuretoacceleratemodelretrieval;andoptimizingLODhierarchystructuretospeeduprendering~