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半透射高光谱成像技术与支持向量机的马铃薯空心病无损检测研究 - 图文

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202光谱学与光谱分析 第35卷

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业工程学报),2012,28(21):149.

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Non-DestructiveDetectionResearchforHollowHeartofPotatoBasedonSemi-TransmissionHyperspectralImagingandSVM

HUANGTao,LIXiao-yu*,XUMeng-ling,JINRui,KUJing,XUSen-miao,WUZhen-zhongCollegeofEngineering,HuazhongAgriculturalUniversity,Wuhan 430070,China

Abstract Thequalityofpotatoisdirectlyrelatedtotheirediblevalueandindustrialvalue.Hollowheartofpotato,asaphysio-logicaldiseaseoccurredinsidethetuber,isdifficulttobedetected.Thispaperputforwardanon-destructivedetectionmethodbyusingsemi-transmissionhyperspectralimagingwithsupportvectormachine(SVM)todetecthollowheartofpotato.Comparedtoreflectionandtransmissionhyperspectralimage,semi-transmissionhyperspectralimagecangetclearerimagewhichcontainstheinternalqualityinformationofagriculturalproducts.Inthisstudy,224potatosamples(149normalsamplesand75hollowsamples)wereselectedastheresearchobject,andsemi-transmissionhyperspectralimageacquisitionsystemwasconstructedtoacquirethehyperspectralimages(390~1040nm)ofthepotatosamples,andthentheaveragespectrumofregionofinterestwereextractedforspectralcharacteristicsanalysis.Normalizewasusedtopreprocesstheoriginalspectrum,andpredictionmod-elweredevelopedbasedonSVMusingallwavebands,theaccuraterecognitionrateoftestsetisonly87.5%.Inordertosim-plifythemodelcompetitiveadaptivereweighedsamplingalgorithm(CARS)andsuccessiveprojectionalgorithm(SPA)wereuti-lizedtoselectimportantvariablesfromtheall520spectralvariablesand8variableswereselected(454,601,639,664,748,827,874and936nm).94.64%oftheaccuraterecognitionrateoftestsetwasobtainedbyusingthe8variablestodevelopSVMmodel.Parameteroptimizationalgorithms,includingartificialfishswarmalgorithm(AFSA),geneticalgorithm(GA)andgridsearchalgorithm,wereusedtooptimizetheSVMmodelparameters:penaltyparametercandkernelparameterg.Aftercompar-ativeanalysis,AFSA,anewbionicoptimizationalgorithmbasedontheforagingbehavioroffishswarm,wasprovedtogettheoptimalmodelparameter(c=10.6591,g=0.3497),andtherecognitionaccuracyof100%wereobtainedfortheAFSA-SVMmodel.Theresultsindicatethatcombiningthesemi-transmissionhyperspectralimagingtechnologywithCARS-SPAandAFSA-SVMcanaccuratelydetecthollowheartofpotato,andalsoprovidetechnicalsupportforrapidnon-destructivedetectingofhol-lowheartofpotato.

Keywords Hyperspectralimaging;SupportVectorMachine;Artificialfishswarmalgorithm;Hollowheart;Potato*Correspondingauthor

(ReceivedDec.25,2013;acceptedMar.15,2014)

半透射高光谱成像技术与支持向量机的马铃薯空心病无损检测研究

作者:作者单位:刊名:英文刊名:年,卷(期):

黄涛, 李小昱, 徐梦玲, 金瑞, 库静, 徐森淼, 武振中, HUANG Tao, LI Xiao-yu, XU Meng-ling, JIN Rui, KU Jing, XU Sen-miao, WU Zhen-zhong华中农业大学工学院,湖北 武汉,430070光谱学与光谱分析

Spectroscopy and Spectral Analysis2015(1)

引用本文格式:黄涛.李小昱.徐梦玲.金瑞.库静.徐森淼.武振中.HUANG Tao.LI Xiao-yu.XU Meng-ling.JIN Rui.KU Jing.XU Sen-miao.WU Zhen-zhong 半透射高光谱成像技术与支持向量机的马铃薯空心病无损检测研究[期刊论文]-光谱学与光谱分析 2015(1)

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202光谱学与光谱分析 第35卷[5] ZHANGWei,PANLei-qing,TUKang(张 伟,潘磊庆,屠 康).TransactionsoftheChineseSocietyofAgriculturalEngineering(农业工程学报),2012,28(21):149.[6] LuR,ArianaDP.PostharvestBiologyandTechnology,2013,81:44.[7] LiH,LiangY,XuQ,etal.AnalyticaChimicaActa,2009,648(1):77.[8] AraújoMCU,SaldanhaTCB,Galv?oRKH,etal.ChemometricsandIntelligentLaboratorySystems,2001

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