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27 个结果
  • 简介:为旋转的一个新奇算法当旋转角度的波动的范围在这个区域以内是有限的时,不变的模板匹配被建议[−20°,20°]。匹配的候选人用低费用改进了的一个计算联盟者被选择关联算法。“并且”操作被采用减少计算费用。因此,算法过量地改进匹配的速度。模拟结果验证建议方法的效率。而且当引用图象的尺寸被修理时,这个节省时间的算法的优点作为实时图象的尺寸的增加更明显。建议方法的匹配的速度比分解的二水平的金字塔的速度快超过20倍加速方法。

  • 标签: 运算法则 旋转角 模板匹配 不变量
  • 简介:Thebraincontrolsvirtuallyallbodyfunctions,bothinternallyandininteractionwiththeexternalenvironment.Asthebasicbodyanatomyofallvertebrateshasabilateralsymmetry,structuresandfunctionsofvertebratebrainsarealsoorganizedaccordingtothisfundamentalanatomicalprincipletomeetallsensory,motor,andinternalrequirementsofbodycontrol.Consequently,particularpartsorfunctionsofthebodyarecontrolledbyparticularbrainstructures.Formammalswhosebrainsonlyhaveaverylimitedcapacityto

  • 标签: 功能恢复 模板 损伤 皮质 大脑控制 解剖结构
  • 简介:Medicalimageapplicationinclinicaldiagnosisandtreatmentisbecomingmoreandmorewidely,Howtousealargenumberofimagesintheimagemanagementsystemanditisaveryimportantissuehowtoassistdoctorstoanalyzeanddiagnose.Thispaperstudiesthemedicalimageretrievalbasedonmulti-layerresamplingtemplateunderthethoughtofthewaveletdecomposition,theimageretrievalmethodconsistsoftworetrievalprocesswhichiscoarseandfineretrieval.Coarseretrievalprocessisthemedicalimageretrievalprocessbasedontheimagecontourfeatures.Fineretrievalprocessisthemedicalimageretrievalprocessbasedonmulti-layerresamplingtemplate,amulti-layersamplingoperatorisemployedtoextractimageresamplingimageseachlayer,thentheseresamplingimagesareretrievedstepbysteptofinishtheprocessfromcoarsetofineretrieval.

  • 标签: 医学图像检索 重采样 模板 图像检索方法 临床诊断 医疗影像
  • 简介:ThisletterpresentsanewchunkingmethodbasedonMaximumEntropy(ME)modelwithN-foldtemplatecorrectionmodel.Firsttwotypesofmachinelearningmodelsaredescribed.Basedontheanalysisofthetwomodels,thenthechunkingmodelwhichcombinestheprofitsofconditionalprobabilitymodelandrulebasedmodelisproposed.Theselectionoffeaturesandruletemplatesinthechunkingmodelisdiscussed.ExperimentalresultsfortheCoNLL-2000corpusshowthatthisapproachachievesimpressiveaccuracyintermsoftheF-score:92.93%.ComparedwiththeMEmodelandMEMarkovmodel,thenewchunkingmodelachievesbetterperformance.

  • 标签: 程序分块 最大熵模型 模板修正 确认系统
  • 简介:在这个工作,有大约100nm和一段几测微计的一致直径的TiO2nanorods被大音阶的第五音胶化模板方法成功地准备。另外,准备的beeninvestigated.The取样的TiO2的形态学和nanorods有的结构上的先锋的臼齿的比率的影响被Fourier变换描绘红外线的光谱学(FTIR),X光检查衍射(XRD)和扫描电子显微镜学(SEM)。XRD结果显示TiO2nanorods在锐钛矿和金红石阶段被使结晶,在退火到直到2h的400-700°C以后。

  • 标签: TIO2 模板生长 材料研究 基础原料
  • 简介:Plasmoninducedhotelectronshaveattractedagreatdealofinterestasanovelrouteforphotodetectionandlightenergyharvesting.Herein,wereportahotelectronphotodetectorinwhichalargearrayofnanoconesdepositedsequentiallywithaluminum,titaniumdioxide,andgoldfilmscanbeintegratedfunctionallywithnanophotonicsandmicroelectronics.Thedeviceexhibitsastrongphotoelectricresponseataround620nmwitharesponsivityof180μA/Wundershort-circuitconditionswithasignificantincreaseunder1Vreversebiasto360μA/W.Theincreaseinresponsivityandaredshiftinthepeakvaluewithincreasingbiasvoltageindicatethatthebiascausesanincreaseinthehotelectrontunnelingeffect.Ourapproachwillbeadvantageousfortheimplementationoftheproposedarchitectureonavastvarietyofintegratedoptoelectronicdevices.

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  • 简介:Inthispaper,weproposeanovelautomaticobjectextractionalgorithm,namedtheTemplateGuidedLiveWire,basedonthepopularlyusedlivewiretechniques.Wediscussindetailsthenovelmethod'sapplicationsontongueextractionindigitalimages.Withtheguidesofagiventemplatecurvewhichapproximatesthetongue'sshape,ourmethodcanfinishtheextractionoftonguewithoutanyhumanintervention.Inthepaper,wealsodiscussedindetailshowthetemplateguidesthelivewire,andwhyourmethodfunctionsmoreeffectivelythanotherboundarybasedsegmentationmethodsespeciallythesnakealgorithm.Experimentalresultsonsometongueimagesareaswellprovidedtoshowourmethod'sbetteraccuracyandrobustnessthanthesnakealgorithm.

  • 标签: 自动图象分割 舌头分割 计算机 ized 舌头诊断 目标抽取
  • 简介:Zr-Incorporatedmesoporoustitaniamaterialswerepreparedvianonsurfactanttemplatedsol-gelprocessofzirconium(IV)butoxide(ZBT)andtitanium(IV)butoxide(TBT)inthepresenceofureamoleculesastemplateorporeformingagent.TheeffcetsoftemplatecontentsontheporeparametersofthematerialssynthesizedwithfixedZrincorporationcontentswereinvestigatedbymitrogenadsorption-desrptionmeasurements,powderX-raydiffraction(XRD)studyandtransmissionelectronmicroscopy(TEM).ThechangesoftemplatecontentsplaysignificantrolesontheporeparametersatlowincorporsationcontentofZr.Theporediametersdisplayaclearincreasetendencywiththeincreaseoftemplatecontents.WhenhighZrincorporationcontentisused,thetemplatecontentshavelesseffectontheporediametersthatalmostkeepunchangedwiththeincreaseoftemplatecontents.AllthematerialspossesstypeIVisothermswithH2hysteresisloopssuggestingtheformationofmesophase.ThematerialswithlowZrincorporationcontenthaveanatasestructures;however,itcannotbefoundinthematerialswithhighZrincorporationcontent.TEMimagesshowthatsomeaccumulatedinter-particulateporesandwelldistributedworm-likeporesarepresentintheZr-incorporatedmaterials.

  • 标签: 中孔材料 二氧化钛 掺杂 溶胶-凝胶 结构
  • 简介:K-phillipsite用一个热水的方法被准备。可溶的玻璃和钠铝酸盐当一个器官的模板不在时被用作原料。关于K+离子的调查在房间温度被进行在海水样品和混合K+Na+答案的选择系数决定离子交换能力。样品被X光检查衍射(XRD)描绘,扫描电子显微镜学(SEM),和精力分散光谱学(版本)。K+离子交换能力是在海水的51mg/g,选择系数在混合K+Na+答案是75.1。样品为K+有选择偏爱,并且能因此被用来有选择地从海水提取钾。由Si,艾尔,K,Na,和O组成的样品展出跨like形状并且是典型K-phillipsite结构。

  • 标签: 海水样品 钾提取 模板剂 离子交换容量 扫描电子显微镜 选择性系数
  • 简介:Anewmethodforfabricatingorderedporoussiliconisreported.Atwo-dimensionalsilicananospherearrayisusedasatemplatewithahydrofluoricacid-hydrogenperoxidesolutionforetchingthenanospheres.Theinitialdiameteranddistributionoftheholesintheresultingporoussiliconlayeraredeterminedbythesizeanddistributionofthesilicananospheres.Thecorrosiontimecanbeusedtocontrolthedepthsoftheholes.ItisfoundthatthepresenceofaSiO_2layer,formedbytheoxidationoftheroughinternalsurfaceofthehole,istheprimaryreasonallowingthecorrosiontoproceed.Ultravioletreflectionandthermalconductivitymeasurementsshowthatthediameteranddistributionoftheholeshaveagreatinfluenceonpropertiesoftheporoussilicon.

  • 标签: 二氧化硅层 制备方法 多孔硅 有序 模板 二维
  • 简介:Prematureventricularcontraction(PVC)isthemostfrequentarrhythmiaencounteredinclinicalpractice.PVCmayoccurinhealthsubjects,whichisnotimminentlylife-threateningbutmayrequiretherapiestopreventfurtherproblems.So,thetimelyPVCrecognitionbecomesveryimportantfortheanalysisofelectrocardiogram(ECG),especiallyfortheremoteECGmonitoringusingmobilephones.Inthispaper,aconstructionmethodofpersonalizedECGtemplateandaPVCrecognitionmethodbasedontemplatematchingwerestudied.Firstly,weselected43ECGrecordingsfromtheMIT-BIHarrhythmiadatabase.Allrecordingsweredividedintotwodatasets(DS1fortrainingandDS2fortesting)andeachdatasetapproximatelycontainedthesameproportionofPVCbeats.Subsequently,foreachrecording(30min)inDS1,thefirst5minrecordingswereusedtoconstructthepersonalizedECGtemplateandthelast25minrecordingswereusedfortheR-wavepeaksdetectionandPVCrecognition,wherethetemplatematchingmethodwereused.ThevalidityoftheproposedmethodswastestedusingDS2.Theresultsshowedthat:1)highbeatdetectionaccuracywasachievedforbothPVCbeatsandnon-PVCbeats;2)thesensitivityandspecificityofPVCrecognitionwere99.11%and99.96%forthefirst5minrecordingsrespectively,99.17%and99.43%forthelast25minrecordingsrespectively.Alltheproposedmethodscanbereal-timeperformed,whichshowapromisingprospectfortheapplicationofECGmobilephones.

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