基于可判別平凡向量的人臉識別.pdf

1、上海師范大學碩士學位論文基于可判別平凡向量的人臉識別姓名：方瓊申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：王耀明20060401董垂里型型圣璺璺苧墼叁些堡型圭謄塑型奎蘭簍圭耋堡蘭圭ABSTRACTAsoneof也emostimportant印plicationsofcomputerVision，pattemrecognitionarldjmageprooessin＆facerecogmtionh船recent】yrecejvedmo

2、rea11dmoreexte芏1SiveattcntionCompared塒tllotherbiome啊cs，fhcerecognitiontecll工lologyismoreacceptablebecauseitismoremltural，銜enmyalldnonintmsive，but也eaccuracyoffacerecognitionisnothjghenoughatpresent，Infacerecog芏litiontasks

3、，也edimeIlsionof也es鋤plespaceistypicauylargerthanthen啪berOfthesaInplesint王1e枷IlingsetAsaconsequence，tlle謝minclassscancrmat^xissinglll扯髓d也eLinearDisc伯ninamAnalysis(LDA)me也odcannotbeapplieddircctlyThisproblcmisknownas齜“sma】l

4、s姍plesize，’problemh1misp印er，aneWfacerecognitionm如odcalledtheDiscriIninatiVeCommonVectorme也odisproposedAsavariationofFisher’sLinearDisc由ninantAmlysisfor協(xié)esmallsamplesizecaSe，thepropOsedmehodyieldsanoptimalsolutionformaxim

5、izingthemodmedFisher’sLinearDiscriminantcriteriongiVeninmep印eLn坨maincor出mutionsof也ispaper證cludetwopartsOr嵋isfeatureex舡actionTheotherisclassmcationFortlleflrstpan，weex仃actt11edis耐m協(xié)atiVecommonvectorsasfeaturevec∞r(nóng)s疔omttle

6、trainingsetTwodi行brentalgorithmsare舀ventoex廿。Ictmesevectorsrepresemingeachpersonmt11en謝ningsetoft11ef如eda詛baseOnealgorimmuSesthewithinclasssc甜ermatrixof廿1es鋤plesinme缸dningsetwhiletheomerusesthesIIbspacememodsaJldtheGramS

7、clllllidtorthogon村izationDrocedwetoobtain由ediscriminativecommonvectorsFhen，t王lediscriminativecOnunonvectorsareusedforclaSsmcationofnewfacesAnearestneighboralgorit脅isemplo”dusingmeEuclideandistaIlceforclassmc砒ionTheOI己Lf犯

8、eda協(xié)baseareusedtotest血epmposedmethodWeshowedt11ateverysamplcinagivenclassproducesthes鋤eu血quecommonVectorwhent11eyareprojectedont0t11e刪】lspace0ft11eⅥ哇t11in—classscattermatrixExp酣mentalresultsshowt11attlleDiscriminativeCom

9、monV酏tormeⅡlodissuperiortoomermetllodsintermofaccuracy，realtiIIlepedbrmance，storagerequirementsa11dnumericalstabili何KeywOrds：facerecognition，DiscriminativeCormonVbctor，LinearDiscrimin姐tAnalysis，PrincipalConlponentAjlalys