1、西安電子科技大學碩士學位論文指紋圖像質(zhì)量分析及其應(yīng)用研究姓名：郭芳菲申請學位級別：碩士專業(yè)：模式識別與智能系統(tǒng)指導教師：田捷20100101AbstractAbstractFingerprintqualitycontrolisoneofthemostimportantpartsofautomatedfingerprintidentificationsystemConsideringthedifferencesofthecollectio

2、ninstrumenttypes，thee殂entofthefinger’Swetanddrystates，theinjuriesofthefingersandSOon，approximate10％ofthefingerprintimagesarebelongedtOlow—qualityfingerprintsLowqualityimagehassignificantimpact011featureextractionfingerpr

3、intclassification，andfeaturematchingFingerprintqualityevaluationCanbedividedintOthreeaspectsasfollowing：1)overallqualityevaluation；2)localqualityevaluation；3)minutiaequalityevaluationOverallqualityevaluationismainlyusedf

4、orthecontrolofthefingerprintregistrationLocalqualityevaluationCanbedirectlyusedonfingerprintsegmentationTheminutiaequalityevaluationCanbeaddedtominutiaematchingalgorithmThispaperfocusesonthelocalqualityandtheminutiaequal

5、ityevaluationandtheirsapplicationsFirstofall，thepaperusedalocalqualityevaluationwithentropyfeatureThehigherlocalentropyandthequalitythebetterandtheclearerthetextIlrewere，andcouldbeusedtothelocalqualityevaluationmoreeffec

6、tivelyAsadirectapplicationofthelocalqualityevaluationwedevelopedafingerprintimagesegmentationalgorithmbasedonentropyfeatureandAdaBoostclassifierThealgorithmWastestedandcomparedwithothercommonsegmentationalgorithmonFVC200

7、0，F(xiàn)VC2002，F(xiàn)VC2004，whichwerethedatabasesoffingerprintverificationcompetitionExperimentresultsshowedthatouralgorithmwasoptimaltobeappliediIlallacquisitioninstruments，andbetterthanothersegmentationalgorithmsbothintermsoferr

8、orrateandstabilitySecondthepaperalsostudiedaminutiaequalityevaluationalgorithmTheminutiaelocalstructurehadabroadapplicationinfingerprintmatchingalgorithmThequalityofthefingerprintminutiaestructurecouldexertedgreatinfluen

9、ceontheperformanceofmashingdirectlyInthispaperweproposedaminutiaestructurequalityfactorandembedthequalityfactorintotheexistingmatchingalgorithmwithminutiaestructureExperimentalresultsofthisalgorithmtestedonFVC2002DB2show