王栋生作文教学笔记系列

WhatisfingerprintRecognitionFingerprintrecognitionreferstotheverification(核实)ofaperson’sidentitythroughcomparinghisfingerprintsandprestoredfingerprint.•Historyanddevelopment•FingerprintRecognitionSystem•Technicalfeatures•DevelopmentProspectandApplicationArea•ExamplesofrelatedproductsWewilltalkabout…Differentfingerhasdifferentrangepattern.Therangepatterndonotchangeinthewholelifetime.Twoimportantcharacteristicoffingerprintwerefoundin19thcentury.弓形环形螺旋形1、Firstused.(1896)2、Applyittotheidentificationofcrime.(early20thcentury)3、Usedcomputertodealwithfingerprint.(1960s)4、Moretoolstoextractthefingerprint.(1980s)5、Usedinmanyotherfieldslater.6、Rapiddevelopmentofpersonalidentificationapplication.(late1990s)ThestructureofhardwaresystemFingerprintRecognitionSystemFingerprintRecognitionSystemStep1•FingerprintimageacquisitionandpreprocessingStep2•ExtractingtherequiredfeaturepointStep3•MatchinginformationwithdatabaseandoutputtingthefingerprintprocessingresultsAdvantages：Disadvantages：Somepeople’sfingerprintsdonothaveenoughfeaturestomakeanimage.DevelopmentProspectandApplicationAreaInformationleakagefromfingerprintsBecomecivilianDevelopmentProspectandApplicationAreaReplacetheidentificationcodeandpasswordCombinethefeatureofthebiologicalrecognitiontechnologyandthefingerprint.DevelopmentProspectandApplicationAreaFacerecognitionDevelopmentProspectandApplicationAreaCapturefingerprintsthroughtheopticalimaging(光学成像)orsemiconductorsensor（半导体感应）EntertheCPUAuthentication(身份验证)Fingerprintanti-theftdevice(汽车指纹防盗装置)Fingerprintanti-theftdeviceUsingfingerprintstocontroltheautomobilesecuritysystem.Fingerprintanti-theftdeviceAddingotherusersonlyforusingthecar.TouchIDTouchIDQuestion?