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简介：Stereomatchingisafundamentalandcrucialproblemincomputervision.Inthelastdecades,manyresearchershavebeenworkingonitandmadegreatprogress.Generallystereoalgorithmscanbeclassifiedintolocalmethodsandglobalmethods.Inthispaper,thechallengesofstereomatchingarefirstintroduced,andthenwefocusonlocalapproacheswhichhavesimplerstructuresandhigherefficiencythanglobalones.Localalgorithmsgenerallyperformfoursteps:costcomputation,costaggregation,disparitycomputationanddisparityrefinement.Everystepisdeeplyinvestigated,andmostworkfocusesoncostaggregation.Westudiedmostoftheclassicallocalmethodsanddividethemintoseveralclasses.Theclassificationwellillustratesthedevelopmenthistoryoflocalstereocorrespondenceandshowstheessenceoflocalmatchingalongwithitsimportantanddifficultpoints.Attheendwegivethefuturedevelopmenttrendoflocalmethods.

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简介：ＡＭＵＬＴＩＰＬＥＳＴＲＵＣＴＵＲＥＲＥＣＯＮＳＴＲＵＣＴＩＯＮＡＬＧＯＲＩＴＨＭＢＡＳＥＤＯＮＷＩＲＥＦＲＡＭＥＭＯＤＥＬＤｕＪｉａｎｇｃｈｕａｎＰａｕｌＷ．Ｆ．ＰｏｏｎＡｂｓｔｒａｃｔＡ“ＬＡＧ＆ＲＬＣ”ｖｉｓｕａｌｉｚａｔｉｏｎａｌｇｏｒｉｔｈ...

简介：Opticalmotioncaptureisanincreasinglypopularanimationtechnique.Inthelastfewyears,plentyofmethodshavebeenproposedforkey-frameextractionofmotioncapturedata,anditisacommonmethodtoextractkey-frameusingquaternion.Here,onemaindifficultyisduetothefactthatpreviousalgorithmsoftenneedtomanuallysetvariousparameters.Inaddition,itisproblematictopredefinetheappropriatethresholdwithoutknowingthedatacontent.Inthispaper,wepresentanoveladaptivethreshold-basedextractionmethod.Key-framecanbefoundaccordingtoquaterniondistance.Weproposeasimpleandefficientalgorithmtoextractkey-framefromamotionsequencebasedonadaptivethreshold.Itisconvenientwithnoneedtopredefineparameterstomeetcertaincompressionratio.Experimentalresultsofmanymotioncaptureswithdifferenttraitsdemonstrategoodperformanceoftheproposedalgorithm.Ourexperimentsshowthatonecantypicallycutdowntheprocessofextractionfromseveralminutestoacoupleofseconds.

简介：Thereportmainlystudiedthecrawlerframemotionplatformtoreduceweightandincreasetheintensity.ReportdescribedthestructuraldesignprocesswhichusingCAD/CAEtechnologyforsolidmodeling,simulationanalysis,parameteroptimization.AnditalsoexplainedtheoutstandingadvantagesofCAD/CAEtechnologyinmechanicaldesignaswellassimulationanalysis.