Efficient 2-fold contextual filtering approach for fingerprint enhancement

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1、www.ietdl.orgPublishedinIETImageProcessingReceivedon29thMarch2013Acceptedon7thSeptember2013doi:10.1049/iet-ipr.2013.0528ISSN1751-9659Efficient2-foldcontextualfilteringapproachforfingerprintenhancementMubeenGhafoor1,ImtiazA.Taj1,WaqasAhmad1,NomanM.Jafri21Departm

2、entofElectricalEngineering,MohammadAliJinnahUniversity,Islamabad44000,Pakistan2DepartmentofElectricalEngineering,AbasynUniversity,Islamabad44000,PakistanE-mail:mubeenghafoor@yahoo.comAbstract:Automatedpersonalauthenticationhasbecomeincreasinglyimportantinmodern

3、informationdrivensocietyandinthisregardfingerprint-basedpersonalidentificationisconsideredtobethemosteffectivetool.Inordertoensurereliablefingerprintidentificationandimprovefingerprintridgestructure,anovelfingerprintenhancementapproachispresentedbasedonlocaladaptivec

4、ontextualfiltering.Theproposedenhancementtechniqueis2-foldasitinvolvesprocessingbothinfrequencyandspatialdomain.Thefingerprintimageisfirstfilteredinfrequencydomainandthenlocaldirectionalfilteringinspatialdomainisappliedtoobtainenhancedfingerprint.Inordertodetermineth

5、eperformanceefficiencyoftheproposedenhancementtechnique,acomparativeanalysisoferrorratesonstandardfingerprintdatabaseshasbeenpresentedwithmajorcontextualenhancementschemes.Theresultsshowtheefficacyoftheproposedschemeascomparedwithothercontextualfilteringtechniques.

6、1Introductionbrokenridges,thedirectionalcontextualfilteringtechniqueshavebeenproventobemosteffective.Fingerprint-basedrecognitionsystemshavebeenveryInanimageenhancementschemebasedoncontextualsignificantinsecurity-relatedapplications.Although,filtering,thefilterpara

7、metersaretunedadaptivelyduringfingerprint-basedauthenticationisamaturefieldoffilteringprocessbasedonsomelocalcharacteristicsoftheresearch,yetbecauseofstringentrequirementsofspeedandimagecontents.Morespecifically,sincetheridgeflowreliability,especiallyforlarge-scalea

8、pplications,itattractspatternsinfingerprintsaretobeenhanced,thefiltervariesmoreinterestofresearchersthananyotherbiometric.itsparametersaccordingtothelocalridgefrequencyandAfing