警用指纹识别技术研究及软件实现毕业论文

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1、警用指纹识别技术研究及软件实现赵燕摘要:随着社会经济的迅速发展，法制建设的逐渐健全以及人们法律意识的不断增强，对公安工作提出了更高的要求。只有将传统侦查手段与科技相结合，才能更有效地打击犯罪维护社会治安。指纹识别技术作为当今应用最为广泛的生物特征识别技术，是刑事侦查的重要信息资源。本文从生物识别技术出发，指出指纹识别的优越性和意义。在此基础上介绍指纹识别系统的四部分组成，指纹图像采集、指纹图像处理、指纹特征值提取、指纹比对。文章着重研究指纹匹配算法，分析指纹三大匹配算法：基于图形的匹配算法、基于结构匹配算法和点模式匹配算法，比较算法之间的优

2、劣，重点介绍基于中心点的指纹匹配算法和基于遗传算法的指纹匹配算法。在研究的基础上提出一种基于相对距离的方法进行匹配的算法，将点模式的优点和基于结构的特征点之间的相对距离不变性、特征点类型不变性很好结合起来。关键词：指纹识别；比对PoliceFingerprintIdentificationtechnologyresearchandsoftwarerealizingAbstract:Withsocialrapiddevelopmentofeconomyandcommunicationsdaybyday,andtheconsciousnesso

3、flegalconstructiongraduallyenhanced,haveputforwardhigherdemandtothepublicsecuritywork.Onlycombinethetraditionalinvestigationandscienceandtechnology,couldattackthecrimeandsafeguardthesocialsecuritymoreeffectively.Fingerprintidentificationisnowadaysusingthemostextensivebiolo

4、gicalcharacteristicidentification,anditisthecriminalimportantinformationresourcesthatinvestigateandplayanextremelygreatroleinpublicsecuritywork.Thisprogramproceedsfrombiologicalcharacteristicidentification,pointoutthesuperiorityandmeaningoffingerprintidentification.Fingerp

5、rintidentificationsystemmakeupoffourparts,fingerprintpicturegathering，fingerprintpatternprocess，fingerprintcharacteristicselecting,fingerprintmatching.Theprogramstudiesthefingerprintmatchingalgorithmemphatically,itisanalysedthatfingerprintmatchesalgorithmsisdividedintothre

6、eparts:algorithmofmatchbasedonfigure,matchingalgorithmsbasedonstructureandmatchingalgorithmsbasedonminutiapoints.Introducethedevelopmentofthealgorithm,thequalitybetweenthecomparativealgorithms,introducethealgorithmoffingerprintmatchingbasedoncentralpointandalgorithmoffinge

7、rprintmatchingbasedonhereditaryalgorithmespecially.Onthebasisofstudying，theprogramputforwardproposematchingalgorithmsbasedonstructureandminutiapoints.Mymatchingalgorithmscombinetheadvantageofmatchingalgorithmsbasedonstructureandminutiapointstogether.Itisbasedonchangelessst

8、ructureandchangelessdistanceofMinutiaPoints.Keyword:FingerprintIdentification;matching1　绪