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ID:33761549
大小:7.33 MB
页数:71页
时间:2019-03-01
《指纹图像预处理若干算法应用分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据广东工业大学工学硕士学位论文(3)Makeindepthstudyonenhancementtechniqueoflowqualityfingerprintimage,introducethetraditionalGaborfiltering.AimingattheshortcomingsofthetraditionalGaborfilter,thispaperproposeamethodaboutdecompositionandreconstructionoffingerprintimage,useaLog-Gaborfilte
2、rtodecomposethefingerprintimageintoseveraldirection,andreconstructintoanewimage,thenapplyaGaborfiltertoenhancetheimage。ByrealizingthenewmethodwithMatlab,wecansummarizethatitcanimprovetheclarityofridgestructureandrestorethedetailsinthecorrosivearea.Bycontrast,thenewmethodi
3、sbertterthanthetraditonalGaborfilteringmethod.(4)Introducetheclassicalbinarizationandthinningalgorithm—OTSUandOPTA.Makeindepthstudyonthefeatureextractiontechnology.Duetotheexistofmanyfalsefeature,thispaperfilterthemintwosteps:first,proposeamethodtoremovethefalsefeatureont
4、heedgeoffingerprint.Thatiscalculatingthesumofgraylevelintheeightneighborhoodaboutthetarget,todeterminewhichisafalsefeaturepoint.Thenremovethefalsefeatureinthecenteroffingerprintbasedonthespatialcharacteristicsoffeature.Inthispaper,thebasictheoryofmatchingisexpoundedsimply
5、.AfingerprintidentificationdemosystemisalsodesignedwithMatlab.Keywords:PreprocessingofFingerprint,Filtering,Enhancement,OrientationImage,FeatureExtractionIV万方数据目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.IAbstract⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯II目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
6、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.v(:()NTENTS⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.V1I第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.11.1指纹预处理技术的研究背景及意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.1.1指纹识别技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.1.2指纹图像的预处理很关键⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.21.1.3指纹技术有待提高⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21.2指纹预处理技术的国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
7、⋯⋯⋯⋯⋯31.2.1指纹传感器技术的发展现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31.2.2指纹预处理技术的国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..41.3本论文的主要研究内容及结构⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.5第二章指纹图像预处理的相关技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一72.1指纹图谱分析及表示⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯72.2指纹预处理概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..112.3标准化⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.152.4指纹方向图的计算⋯⋯⋯⋯⋯⋯⋯⋯⋯
8、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.162.5指纹脊线频率图的计算⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯192.6本章小结⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯22第三章基于Gabo
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