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1、,QIRUPLQJ6FLHQFH6SHFLDO,VVXHRQ0XOWLPHGLD,QIRUPLQJ7HFKQRORJLHV²3DUW9ROXPH1RAnIntroductiontoFaceRecognitionTechnologyShang-HungLin,Ph.D.ICMediaCorporationshanghung.lin@ic-media.comAbstractRecentlyfacerecognitionisattractingmuchattentioninthesocietyofnetworkmultimediainformationacces
2、s.Areassuchasnetworksecurity,con-tentindexingandretrieval,andvideocompressionbenefitsfromfacerecognitiontechnologybecause"people"arethecenterofattentioninalotofvideo.Networkaccesscontrolviafacerecognitionnotonlymakeshackersvirtuallyimpossibletostealone's"password",butalsoincreasestheuser-
3、friendlinessinhuman-computerinteraction.Indexingand/orretrievingvideodatabasedontheappearancesofparticularpersonswillbeuse-fulforuserssuchasnewsreporters,politicalscientists,andmoviegoers.Fortheapplicationsofvideophoneandteleconferencing,theassistanceoffacerecognitionalsoprovidesamoreeffi
4、cientcodingscheme.Inthispaper,wegiveanintroductorycourseofthisnewinformationprocessingtechnology.Thepapershowsthereadersthegenericframeworkforthefacerecognitionsystem,andthevariantsthatarefrequentlyencounteredbythefacerecognizer.Severalfamousfacerecognitionalgorithms,suchaseigenfacesandne
5、uralnetworks,willalsobeexplained.Keywords:FaceRecognition;BiometricIdentification;NetworkSecurityandSurveillance;NeuralNetwork;Karhonen-Loeve(KL)Transform;ImageProcessingautomatedmethodsofverifyingorrecognizingtheidentityofIntroductionalivingpersononthebasisofsomephysiologicalcharacteris-
6、tics,suchasfingerprintsorfacialfeatures,orsomeaspectsofIntoday'snetworkedworld,theneedtomaintainthesecuritytheperson'sbehavior,likehis/herhandwritingstyleorkey-ofinformationorphysicalpropertyisbecomingbothincreas-strokepatterns.Sincebiometricsystemsidentifyapersonbyinglyimportantandincrea
7、singlydifficult.Fromtimetotimebiologicalcharacteristics,theyaredifficulttoforge.wehearaboutthecrimesofcreditcardfraud,computerbreak-in'sbyhackers,orsecuritybreachesinacompanyorgovern-AmongthevariousbiometricIDmethods,thephysiologicalmentbuilding.Intheyear1998,sophis
