嵌入式人体手背静脉图像采集系统的研制-王云新

30220092ChineseJournalofScientificInstrumentVol130No12Feb.2009:2008-01ReceivedDate:2008-01*:-(60627002)(06YFJZJC00400,043800511)*王云新,刘铁根,朱均超,霍晓飞,江俊峰(300072):,,LightTools,;TMS320DM642CMOS,,,,,:;;CMOS;:TP391.4:A:510.8040DevelopmentofanembeddedimageacquisitionsystemforhumandorsalhandveinWangYunxin,LiuTiegen,ZhuJunchao,HuoXiaofe,iJiangJunfeng(KeyLaboratoryofOpto-electronicsInformationandTechnicalScienceofMOE,CollegeofPrecisionInstrumentandOpto-electronicsEngineering,TianjinUniversity,Tianjin300072,China)Abstract:Aimingattheapplicationofdorsalhandveinrecognitiontechnology,theimageacquisitioninstrumentforhumandorsalhandveinwasdeveloped,whichisbasedonembeddedprocessingsystem.Accordingtotheimagingprincipleandfeatureofdorsalhandvein,thestructureoftheimagecollectionsystemwasdesigned.Firstlytheopt-imalparametersofthelightsourcewerechosenbytheopticalsimulationsoftwareLightTools,andthelightsourcewithhighilluminationhomogeneitywasimplementedundertheguidanceofthesimulationresults.ThentakingTMS320DM642andCMOSimagesensorasthecorecomponents,theembeddedmodulewasdesignedtorealizetheimagecollectionandprocessing,andthecollectedimagewaspreprocessedusinggraymorphologymethod,whichfurtherimprovestheimagequality.Theresultindicatesthatthissystemcannotonlyobtaintheimageofdorsalhandveinwithhighperformance,butalsoprovideanembeddeddevelopmentplatformforhandveinrecognition.Keywords:dorsalhandvein;imageacquisition;CMOSimagesensor;embeddedmodule1,,,,()[1],,[2-4],,2:309,,,,,,[5-6],,,,PC[7-8],,,,,(DSP),,2,,,700~1000nm,3mm[9],[10-11],,,,,1CMOS4,,,CMOS,1Fig.1Structureoftheimageacquisitionsystemforhandvein33.1,70%,,,,,,(LED),LED,LED,,,LED,,4,60LED,LED,2(a),150mm@150mmLightTools,di(dl@dw)LED(H),di=168mm,dl=dw=86mm,H=90b,2(b),,84%,310303.2DSP,,33Fig.3Hardwarestructureoftheembeddedprocessingmodule,TMS320DM642(DM642),,600MHz,8,4800MIPS[12],DM64264(EMIF),,(EMAC),TCP/IP,100MTCP,DM6423VPORT,,,,MT9M001CMOS,130,30/,390~1030nmMT9M001,,CMOS,:DM642I2CCMOS,CMOSFPGADM642VPORT,FPGADM642CMOSDM642VPORTFIFO(),DM642,FIFOEDMA()SDRAM,DM642,,3.3,DSP/BIOS,DSP/BIOS,I/O;DSP/BI-OS,,,DSP/BIOS4,,DSPEMIFFlashDSPRAMDSP,CMOS,,,,DSP,,4Fig.4Softwareflowchartoftheembeddedprocessmodule,CMOS,,,:1)(-0.),2)3),,,,,2:3114,5,CMOS,LightToolsCMOS,,,6,6(a),,CMOS,6(b),,,5,,,TMS320DM642,CMOS,,,,[1]JAINAK,ROSSA,PRABHAKARS.Anintroductiontobiometricrecognition[J].IEEETrans.CircuitsandSystemsforVideoTech,2004,14:4-20.[2]OGORMANL.Comparingpasswords,tokens,andBio-metricsforuserauthentication[C].ProceedingsoftheIEEE,2003,91(12):2019-2040.[3],,.[J].,2006,20(6):76-80.CHENGY,SUNTJ,LEIYSH.Fingerprintimageen-hancementbasedonadaptivefilter[J].JournalofElec-tronicMeasurementandInstrument,2003,91(12):2019-2040.[4],,.Gabor[J].,2008,29(3):556-561.LIANQSH,CHENSHZH,LIUCHL.Palmprintiden-tificationalgorithmbasedonenergyanddirectionfeaturefusionofGaborwavelet[J].ChineseJournalofScientificInstrument,2008,29(3):556-561.[5]WANGKJ,ZHANGY.Handveinrecognitionbasedonmultisupplementalfeaturesofmult-iclassifierfusiondec-ision[C].Proceedingsofthe2006IEEE,2006:1790-1795.[6]PARKG,SANGKIM,CHOIH.Apersonidentifica-tionalgorithmutilizinghandveinpattern[C].KoreaSig-nalProcessingConference,1997,10(1):1107-1110.[7]TOSHIYUKIT,NAOHIKOK.Biometricauthenticationbyhandveinpatterns[C].SiceAnnualConferenceinSapporo,2004:249-253.[8]BADAWIAM.Handveinbiometricverificationproto-type:Atestingperformanceandpatternssimilarity[C].IPCV,2006,14:3-9.31230[9]CROSSJM,SMITHCL.Thermographicimagingofthesubcutaneousvascularnetworkofthebackofthehandforbiometricidentification[C].Proceedingsof29thInterna-tionalCarnahanConferenceonSecurityTechnology,1995:20-35.[10]SHAHINM,BADAWIA,KAMELM.Biometricau-thenticationusingfastcorrelationofnearinfraredhandveinpatterns[J].InternationalJournalofBiomedicalScience,2007,2(3):141-148.[11]WANGKJ,ZHANGY,YUANZH,eta.lHandveinrecognitionbasedonmult-isupplementalfeaturesofmult-iclassifierfusiondecision[C].The2006IEEEInterna-tionalConferenceonMechatronicsandAutomation,2006:1790-1795.[12]TexasInstruments.TMS320C6000CPUandInstructionSetReferenceGuide[Z].2000.,2006,,E-mai:[e-mail]udeoptoelectronicmeasurementandpatternrecognition.E-mai:[e-mail],19871999,,E-mai:[e-mail]versity,in1987and1999respectively.NowheservesasafullprofessorinCollegeofPrecisionInstrumentsandOptoelectronicsEngineering,TianjinUniversity.Hisresearchinterestsfocusonoptoelectronicmeas-urementandembeddedimageprocessingtechnology.E-mai:[e-mail]