fingerprint+image+enhancement+using+orientation+mapping

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1、MinutiaeFigureRidgeterminationBranch(Bifurcation)Dot／slandLakeHookBridgeBranchesT穰量urcation俨ork)OpposedbranchesRidgeCrossin‘gFigure1．2LocalFeatures：Basicandcompositeridgecharacteristics(minutiae)Figure1．3Globalfeatures：DeltaandCore1．2AbnormalRidgeStructure1．3HistoryofFingerprint：rSmIn．SOn01SeUeto．f

2、orlnrogerlVea4Whetherstillhavesomeconflictaboutthehistoryoffingerprintinvention,butwehavetriedtosummarizeafterreadingsomeliterature(showniIlbelowTable·1)[2—12]．TimeEventThefistscientificacknowledgementoffingerprintsintheWest．TheEnglishplantmorphologistDr．NehemiahGrew，studiedanddescribed1684theridge

3、s，furrowsandporesofboththehumanhandsandfeet．HisreportwasissuedtoLondon’SRoyalSociety．Prussian／C：Eech／BohemianprofessorofanatomyandphysiologyJohannesEvangelistaPurkinjeofBreslauUniversitywasthefist1823persontocreateasystemofclassifyingfingerprints．Histhesispublished协December1823．Inhisthesishedescrib

4、edandillustratedninefingerprintpatterntypesi11considerable矗etail．Fingerprintimagescouldbeusedtosolveacrimewhichisproposedby1880ScottishphysicianandsurgeonDrHenryFaulds．Thismovedfmgerprintimagesbeyondcivilapplicationssuchascontracts，andintotheforensicarea．1883FrenchmanAlphonseBertillonwasdevisedanew

5、identificationmethodbasedonthephysicalmeasurementsofthehumanbody(Bertfllonage)．ItwasapprovedinFranceandlaterinotherEuropeancountries．EnglishanthropologistSirFrancisGaRoni(CharlesDarwin’Scousin)publishedabookontheuseoffingerprintsforidentification,Finger1892Prints，creatingthebasisforthefingerprintsc

6、lassification．ThefirstrecordedcaseinwhichfingerprintswereusedtosolveacrimetookplaceinArgentina．TheArgentineanpolicehadabandoned‘Bertillonage’infavouroffmgerprintsincriminalrecordsbasedonaclassificationsystemfor1896fmgerprkascreatedbytheArgentineanJuanVucetich．Hisclassificationsystemwasusedthroughou

7、tSouthAmerica．SirEdwardHenrydevebpsaclassificationmethodforfingerprintsthat51．4FingerprintClassificationThede‘ansinformationfromtheentirefmgerpr缸imagesisthen：1ainrequiI．ementforclleclassificationmethodandit