欢迎来到天天文库
浏览记录
ID:55784462
大小:1.25 MB
页数:7页
时间:2020-06-01
《开放式环境非接触低分辨率采集下的掌纹识别.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第34卷第8期仪器仪表学报Vo1.34No.82013年8月ChineseJournalofScientificInstrumentAug.2013开放式环境非接触低分辨率采集下的掌纹识别水桑海峰,马诗朦,黄静(沈阳工业大学信息科学与工程学院沈阳110870)摘要:提出一种开放式环境下、非接触采集下的掌纹识别算法。采用一种低分辨率的普通摄像头进行掌纹图像采集,人手只需自然张开、中指竖直向上放在摄像头前一定范围内。首先建立肤色模型将人手从复杂背景中提取出来;然后提出一种简单有效的关键点定位算法找到指根点
2、,并以此建立坐标系提取掌纹ROI;接着提出一种基于统计的纹理基元算法进行掌纹特征提取,该算法不用对掌纹ROI进行归一化,计算速度较快并且对光照具有一定的鲁棒性;最后利用余弦相似度进行特征匹配实现掌纹识别。在自建的小型掌纹图像库上进行了相应的识别实验,实验结果表明所提出的算法能够在动态环境下达到理想的识别效果。所开发的实验系统能够快速实现掌纹图像采集与识别,适合在线实时系统应用。关键词:掌纹识别;非接触;纹理基元;复杂背景;在线识别中图分类号:TP391.41文献标识码:A国家标准学科分类代码:510.
3、40Touch-lesslowresolutionpalmprintrecognitionunderopenenvironmentSangHaifeng,MaShimeng,HuangJing(SchoolofInformationScienceandEngineering,ShenyangUniversityofTechnology,Sheayang110870,China)Abstract:Thispaperproposesatouch-lesspalmpfintrecognitionalgori
4、thminopenenvironment.Thesystemusesalow—resolutioncameratoachievethepalmprintimageacquisition.Intheacquisition,thehandisrequiredtonaturallyopen,andthemiddlefingerisputstraightupinfrontofthecamerawithinacertainrange.First,theskin—colormodelisestablishedto
5、extractthehumanhandfromthecomplexbackground.Second,asimpleandeffectivekeypointposi-tioningalgorithmisproposedtofindthefingerrootpoints.Basedonthesekeypoints,acoordinatesystemisestab—lishedtoextracttheregionofinterest(ROI)ofthepalmprint.Afterthat,anewalg
6、orithmthatappliestextureprimi—tivebasedonstatisticsisproposedtoextractthepalmprintfeatures.ThisalgorithmdoesnotrequirealigningalltheROIstothesamelocationandhastheadvantagesoffastcomputingspeedandrobustnesstothelightillustration.Fi—nally,thecosinesimilar
7、ityalgorithmisdeployedtoperformfeaturematchingandpalmprintrecognitionisachieved.TheproposedalgorithmwastestedintherecognitionexperimentOilaself-builtdatabase.Experimentresultsshowthattheproposedalgorithmachievesgoodresultsunderdynamicenvironment;thedeve
8、lopedsystemcanquicklyrealizetheacquisitionandrecognitionofthepalmprintimage,andissuitableforonlinereal-timesystemapplications.Keywords:palmprintrecognition;touch-less;textureprimitive;complexbackground;on-linerecognition日俱增。传统的密码
此文档下载收益归作者所有