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ID:62145150
大小:1.36 MB
页数:29页
时间:2021-04-19
《最新模糊神经网络SAR图像分类-药学医学精品资料.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、最新模糊神经网络SAR图像分类-药学医学精品资料Classification2Name:theuseoffullypolarimetricinformationforthefuzzyneuralclassificationofSARimagesAuthor:Chia-TangChen;2003;2021/8/22SARImageClassificationPreprocessingThefirststepfortheclassificationofanSARimageistoreducetheeff
2、ectofspeckle.Leedevelopedapolarimetricfiltertoavoidcross-talk,whilepreservingtheedgesharpnessand,mostimportantly,thepolarimetricproperties.2021/8/23SARImageClassificationB.PolarimetricspecklefilteringForproperlyfilteringfullypolarimetricSARdata,adaptiv
3、efiltersmaybeinadequate,becausecross-talkbetweenpolarimetricchannelsisintroduced,whichdestroysthepolarimetricinformation.Inwhatfollow,weshallapplyapolarimetricfiltertosometestdataasapreprocessingstep2021/8/27SARImageClassificationSupervisedfuzzyneuralc
4、lassificationpolarimetricSARA.fuzzyclustering2021/8/28SARImageClassificationWhatU?2021/8/29SARImageClassificationDistancemeasure2021/8/210SARImageClassificationMembershipfunction2021/8/211SARImageClassificationFCMAlgorithmThefuzzyc-meansalgorithmiscomp
5、risedofthefollowingsteps:2021/8/212SARImageClassificationFDLLearningAlgorithm2021/8/213SARImageClassificationClassificationconfiguration2021/8/214SARImageClassificationB.SupervisedLearningNeuralnetworkimplementation2021/8/215SARImageClassificationC.Dat
6、ainputsandoutputs2021/8/216SARImageClassificationD.TrainingprocessThekeytoobtainingaccurateclassificationresultsbyasupervisedneuralclassifieristotrainthenetworkwithrepresentativetrainingpatternswithintheproblemdomain.Numerically,thenetworktrainingisacc
7、omplishedbyadjustingtheweightsWbetweentheoutputnodesyandtheinputnodesx.Notethatthetrainingdatasetsshouldhaveminimumredundancytoavoidovertrainingandtosavethecomputationaltime.2021/8/217SARImageClassificationExperimentalresultsA.testdatasetdescriptionOri
8、ginalimageFilteredimage2021/8/218SARImageClassificationB.ClassificationresultsanddiscussionLinearpolarimetricdatahasafasterconvergencerateusingthelogarithmic(decibel)scalethanusingthelinearscale.Theuseofthedistancemeasurebasedonacomplex
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