虹膜图像识别处理外文翻译.docx
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虹膜图像识别处理外文翻译.docx
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虹膜图像识别处理外文翻译
外文一:
Abstract
Thebiologicalfeaturesrecognitionisonekindofbasishumanbodyowninherentphysiologycharacteristicandthebehaviorcharacteristicdistinguishesthestatusthetechnology,Namelythroughthecomputerandoptics,acoustics,thebiosensorandthebiometricsprincipleandsoonhightechmethodunifiesclosely,Carryonindividualstatususingthehumanbodyinherentphysiologycharacteristicandthebehaviorcharacteristictheappraisal。
Thebiologicalfeaturesrecognitiontechnologyhasisnoteasytoforget,theforgery-proofperformancegood,noteasyforgeorisrobbed,“carries”alongwithandanytimeandanywhereavailableandsoonmerits.
Irisrecognitionisanewmethodformanidentificationbasedonthebiologicalfeatures,whichhasthesignificantvalueintheinformationandsecurityfield.Combinedwiththepreviousworkofotherresearchers,adiscussioniselaboratelymadeonthekeytechniquesconcerningthecaptureofirisimages,locationofiriscircleandsomeimprovedandapproachestotheseproblemsareputforward.Thelocationofirisrecognitionisrealizedwhichprovesefficient.
Irislocationisacrucialpartintheprocessofirisrecognition,thusobtainingtheirislocalizationpreciselyandfleetlyisthepreludeofeffectiveirislocalization.
Irislocationofisakernelprocessioninanirisrecognitionsystem.Thespeedanaccuracyoftheirislocationdecidetheperformanceoftheirisrecognitionsystem.
Taketheadvantagesoftheirisimage,per-processestheimages,decidesthepesudo–centerofpupilbyamethodofgrayprojection.
Thentheapplicationcalculusoperatorlawcarriesoninsideandoutsidetheiristheboundarylocalization,inthispaper,thisalgorithmisbasedontheDaugmanalgorithm.Finallyrealizesthelocalizationprocessinmatlab.
Keywords:
Irislocation,Biologicalfeaturesrecognition,Calculusoperator,Daugmanalgorithm
TableofContents
The1ChapterIntroduction
1.1Theresearchbackgroundofirisrecognition...............6
1.2Thepurposeandsignificance.............8
1.3Domesticandforeignresearch....................9
Chapter2ofirisrecognitiontechnologyIntroduction
2.1biometricidentificationtechnology...............14
2.1.1Thestatusanddevelopment...................14
2.1.2Severalbiometrictechnology...................17
2.2Irisrecognitiontechnology.......................23
2.3Summary...........................................26
Chapter3ResearchStatusofirislocationalgorithm
3.1Severalcommonlocalizationalgorithm..............27
3.1.1Houghtransformmethod.......................27
3.1.2Geometricfeatureslocationmethod...........28
3.1.3Activecontourpositioningmethod............29
3.2Positioningalgorithmstudied....................31
Chapter4operatorcalculusbasedirislocalizationalgorithm
4.1Imagepreprocessing...............................34
4.1.1Irisimagesmoothing(denoising).............36
4.1.2Sharpentheimage(filter)..................37.
4.2Coarsepositioningtheinneredgeoftheiris.....39
4.3theiristolocatecalculusoperatorlaw.........40
4.4Summary..........................................41
Chapter5Conclusion....................................41
References...............................................43
Thefirstchapter
1.1Theresearchbackgroundofirisrecognition
Biometricsisatechnologyforpersonalidentificationusingphysiologicalcharacteristicsandbehaviorcharacteristicsinherentinthehumanbody.Canbeusedforthebiologicalcharacteristicsofbiologicalrecognition,fingerprint,handtypeface,iris,retina,pulse,earetc..Behaviorhasthefollowingcharacteristics:
signature,voice,gait,etc..Basedonthesecharacteristics,ithasbeenthedevelopmentofhandshaperecognition,fingerprintrecognition,facialrecognition,irisrecognition,signaturerecognitionandotherbiometrictechnology,manytechniqueshavebeenformedandmaturetoapplicationof.
Biologicalrecognitiontechnologyina,hasalonghistory,theancientEgyptiansthroughidentificationofeachpartofthebodysizemeasuretocarryoutidentitymaybetheearliesthumanbasedontheearliesthistoryofbiometrics.ButthemodernbiologicalrecognitiontechnologybeganintwentiethCentury70timemetaphase,asbiometricdevicesearlyisrelativelyexpensive,soonlyahighersecuritylevelatomictest,productionbase.duetodecliningcostofmicroprocessorandvariouselectroniccomponents,precisiongraduallyimprove,controldeviceofabiologicalrecognitiontechnologyhasbeengraduallyappliedtocommerceauthorized,suchasaccesscontrol,attendancemanagement,managementsystem,safetycertificationfieldetc..
Allbiometrictechnology,irisrecognitioniscurrentlyusedasaconvenientandaccurate.Makingtwenty-firstCenturyisinformationtechnology,networktechnologyofthecentury,isalsothehumangetridoftraditionaltechnology,moreandmorefreedomofthecentury.Intheinformation,freeforthecharacteristicsofthecentury,biometricauthenticationtechnology,high-techastheendofthetwentiethCenturybegantoflourish,willplayamoreandmoreimportantroleinsociallife,fundamentallychangethehumanwayoflife.Characteristicsoftheiris,fingerprint,DNAthebodyitself,willgraduallyexistingpassword,key,becomepeoplelifestyle,insteadofatthesametime,personaldatatoensuremaximumsafety,maximizethepreventionofvarioustypesofcrime,economiccrime.
Irisrecognitiontechnology,becauseofitsuniqueintermsofacquisition,accuracyandotheradvantages,willbecomethemainstreamofbiometricauthenticationtechnologyinthefuturesociety.Applicationofsafetycontrol,thecustomsimportandexportinspection,e-commerceandotherfieldsinthefuture,isalsoinevitableinirisrecognitiontechnologyasthefocus.Thistrend,nowinvariousapplicationsaroundtheworldbegantoappearinthe.
1.2Objectiveandsignificanceofirisrecognition
Irisrecognitiontechnologyrisinginrecentyears,becauseofitsstrongadvantagesandpotentialcommercialvalue,drivenbysomeinternationalcompaniesandinstitutionshaveinvestedalotofmanpower,financialresourcesandenergyresearch.TheconceptofautomaticirisidentificationisfirstproposedbyFrown,thenDaugmanforthefirsttimeinthealgorithmbecomesfeasible.
Theirisisacoloredringinthepupilintheeyeoffabricshape,eachiriscontainsastructureliketheoneandonlybasedonthecrown,crystalline,filaments,spots,structure,concavepoint,ray,wrinklesandfringecharacteristic.Theirisisdifferentfromtheretina,retinalislocatedinthefundus,difficulttoimage,iriscanbeseendirectly,biometricidentificationtechnologycanobtaintheimageofirisfinewithcameraequipmentbasedonthefollowingbasis:
Irisfibroustissuedetailsisrichandcomplicated,andtheformationandembryonictissueofirisdetailstheoccurrencestageoftheenvironment,havegreatrandomthe.Theinherentcharacteristicsofiristissueisdifferfrommantoman,evenidenticaltwins,thereisnorealpossibilityofcharacteristicsofthesame.
Whentheirisarefullydeveloped,hechangesinpeople'slifeandtiny.Intheirisouter,withalayeroftransparentcornealitisseparatedfromtheoutsideworld.Somatureirislesssusceptibletoexternaldamageandchange.
Thesecharacteristicsoftheirishastheadvantages,theirisimageacquisition,thehumaneyeisnotindirectcontactwithCCD,CMOSandotherlightsensor,usesanontechnologyacquisitioninvasion.So,asanimportantbiometricidentityverificationsystem,irisrecognitionbyvirtueoftheiristextureinformation,stability,uniquenessandnonaggressive,moreandmoreattentionfrombothacademicandindustrialcircles.
1.3Statusandapplicationofdomesticandforeignresearchonirisrecognition
IDC(InternationalDataGroup)statisticsshowthat:
bytheendof2003,theglobalirisrecognitiontechnologyandrelatedproductsmarketcapacitywillreachthelevelof$2000000000.PredictedconservedsurveyChinabiometricauthenticationcenter:
inthenext5years,onlyintheChinese,irisrecognitioninthemarketamountedto4000000000rmb.Withtheexpansionofapplicationoftheirisrecognitiontechnology,andtheapplicationintheelectroniccommercedomain,thisnumberwillexpandtohundredsofbillions.
ThedevelopmentofirisrecognitioncanbetracedbacktonineteenthCentury80's..In1885,ALPHONSEBERTILLONwillusethecriminalprisonthoughtsoftheapplicationofbiometricsindividualinParis,includingbiologicalcharacteristicsforuseatthetime:
thesizeoftheears,feetinlength,iris.
In1987,ARANSAFIRandLEONARDFLOMDepartmentofOphthalmologyexpertsfirstproposedtheconcept,theuseofautomaticirisrecognitionirisimagein1991,USALosalaMossNationalLaboratoryJOHNSONrealizedanautomaticirisrecognitionsystem.
In1993,JOHNDAUGMANtoachieveahighperformanceautomaticirisrecognitionsystem.
In1997,thefirstpatentChineseirisrecognitionisapproved,theapplicant,WangJiesheng.
In2005,theChineseAcademyofSciencesInstituteofautomation,NationalLaboratoryofpatternrecognition,becauseofoutstandingachievement"inrecognitionof"irisimageacquisitionandaspects,wonthetwo"NationalTechnologyInventionPrize",thehighestlevelrepresentsthedevelopmentofirisrecognitiontechnologyinchina.
In2007November,"requirementsforinformationsecuritytechnologyinirisrecognitionsystem"(GB/T20979-2007)nationalstandardspromulgatedandimplemented,thedraftingunit:
BeijingarithenInformationTechnologyCo.,ltd..
Applicationofsafetycontrol,thecustomsi
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