第21卷第3期2013年3月
光学精密工程
0pticsandPrecisionEngineering
V01.21No.3
Mar.2013
文章编号1004—924X(2013)030734一08
离焦状态下的模糊掌纹识别
林森1’弘,苑玮琦1
(1.沈阳工业大学视觉检测技术研究所,辽宁沈阳110870;
2.辽宁工程技术大学电子与信息工程学院,辽宁葫芦岛125105)
摘要:针对掌纹识别时非接触信号采集可能出现的离焦状态会导致掌纹模糊,从而降低识别系统性能的问题,提出了一种基于稳定特征的模糊掌纹识别方法。建立了掌纹的离焦退化数学模型;在分析模糊机理的基础上,使用拉普拉斯平滑变换提取模糊掌纹的低频系数作为稳定特征,利用特征向量之间的欧式距离进行匹配和判别。文中给出了算法的步骤,并通过实验确定了需要选取的低频系数的个数。在建立的SUT-D模糊掌纹库上进行了识别测试,结果表明本文算法的等误率可达17.1017%,与传统的DCT变换及EigenPalm,Palmcode等8种典型识别方法比较,等误率最高可降低7,9084%。这些结果显示本文方法不但能够提升识别效果,而且特征维数较低,改善了模糊掌纹识别系统的性能。
关键词:生物特征;掌纹识别;离焦;模糊识别;拉普拉斯平滑变换
中图分类号:TP391.4文献标识码:Adoi:10.3788/0PE.20132103.0734
BlurredpalnlprintrecognitionunderdefOcusstatus
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Abstract:Asthedefocusstatusinnon—contactsignalacquisitionforpalmprintrecognitionmightblurpalmprintanddegradetheperformanceofarecognitionsystem,anovelschemebasedonstablefea—tureswasproposedfortheblurredpalmprintrecognition.Firstly,amathematicalmodelofdefocusdegenerationwasestablished.Then,theblurmechanismwasanalyzedindetailandtheLaplacianSmoothingTransform(LST)wasemployedtoextractlow—frequencycoefficientsfromblurredpalm—printasstablefeatures.Furthermore,theEuclideandistancebetweenthefeaturevectorswasusedfor
matchinganddiscriminating.Withtheexperiments,the
operationstepsofthealgorithmweregiven
andthenumberoflow—frequencycoefficientsweredetermined.Theexperimentsbased
ontheself—madeSUT—Dblurredpalmprintdatabasewereperformed.Obtainedresultsshowthattheproposedal—gorithmcangetEqualErrorRate(EER)of17.1017%,whichhasbeenmaximallyreducedby7.9084%comparedwiththosefromothertypicalrecognitionmethods,suchastraditionalDiscreteCosine收稿日期:2012—10一24;修订日期:2012—12—11.
基金项目:国家自然科学基金资助项目(No.60972123);教育部高等学校博士学科点专项科研基金资助项目(No20092102110002);沈阳市科技计划资助项目(F10一213—1一Oo)
离焦状态下的模糊掌纹识别
作者:林森, 苑玮琦, LIN Sen, YUAN Wei-qi
作者单位:林森,LIN Sen(沈阳工业大学视觉检测技术研究所,辽宁沈阳110870;辽宁工程技术大学电子与信息工程学院,辽宁葫芦岛125105), 苑玮琦,YUAN Wei-qi(沈阳工业大学视觉检测技术研究所,辽宁沈阳,110870)
刊名:
光学精密工程
英文刊名:Optics and Precision Engineering
年,卷(期):2013,21(3)
参考文献(29条)
1.SHU W;ZHANG D Automated personal identification by palmprint 1998(08)
2.ZHANGD;KONG W K;YOU J Online palmprint identification 2003(09)
3.KONG A;ZHANG D;KAMEL M A survey of palmprint recognition 2009(07)
4.邬向前;张大鹏;王宽全掌纹识别技术 2006
5.HUANG D S;JIA W;ZHANG D Palmprint verification based on principal lines 2008(04)
6.苑玮琦;谷宗辉全手掌纹5类主线特征选择方法研究 2012(04)
7.BADRINATH G S;GUPTA P Palmprint based recognition system using phase-difference information 2012(01)
8.MICHAEL G K O;CONNIE T;TEOH A B J Touch-less palm print biometrics:Novel design and implementation 2008(12)
9.CHOGE H K;OYAMA T;KARUNGARU S Palmprint recognition based on local DCT feature Extraction 2009
10.SRINIVAS B G;GUPTA P Palmprint based verification system using SURF features 2009
11.苑玮琦;范永刚;柯丽基于灰度曲面匹配的掌纹识别方法 2009(06)
12.LU G M;ZHANG D;WANG K Q Palmprint recognition using eigenpalms features 2003(9-10)
13.桑海峰;苑玮琦;张志佳基于二维主成分分析的掌纹识别研究 2008(09)
14.郭金玉;苑玮琦基于二维Fisher线性判别的掌纹识别方法 2008(06)
15.CHORAS M;KOZIK R Contactless palmprint and knuckle biometrics for mobile devices 2012(01)
16.KANHANGAD V;KUMAR A;ZHANG D A unified framework for contactless hand verification 2011(03)
17.MICHAEL G K O;CONNIE T;JIN A T B Design and implementation of a contactless palmprint and palm vein sensor 2010
18.苑玮琦;冯素月改进的非接触式在线掌纹识别模拟系统 2011(07)
19.SANG H F;LIU F Defocused palmprint recognition using 2DPCA 2009
20.赵金宇;吴元昊;贾建禄基于实时波前信息的图像复原 2012(06)
21.KANG B J;PARK K R Real-time image restoration for iris recognition systems 2007(06)
22.FAN X;ZHANG Q;LIANG D Q Face image restoration based on statistical prior and image blur measure 2003
23.LEE E C;PARK K R Image restoration of skin scattering and optical blurring for finger vein recognition 2011(07)
24.吴丹阳;张忠波;马驷良非接触式掌纹识别中的图像复原方法 2008(02)
25.温博;张启衡;张建林应用自解卷积和增量Wiener滤波实现迭代盲图像复原 2012(12)
26.粱春;沈建新;钮赛赛基于半盲解卷积复原的高分辨率视网膜成像系统 2012(06)
27.ZHUO S J;SIM T Defocus map estimation from a single image 2011(09)
28.GU S C;TAN Y;HE X G Laplacian smoothing transform for face recognition 2010(12)
29.翟永平;周东翔;刘云辉聚焦函数性能评价指标设计及最优函数选取 2011(04)
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