学科分类
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8 个结果
  • 简介:有人的脸的图象在成像领域包括必要部分。在面部部分的吸藏或损坏将带显著不快和信息损失。我们建议能修理的一个算法堵塞了或自动地损坏了面部图象,命名‘facial图象inpainting'。Inpainting是处理方法恢复失踪的图象部分的一套图象。我们在由介绍面部领域知识油漆方法扩大图象。与一个脸数据库的支持,我们的途径宣传结构的信息,即,特征点和边地图,从类似的脸到失踪的面部区域。把推断的结构的信息用作指导,在油漆算法的一幅基于模范的图象被采用从来源部分在一样的脸拷贝补丁到失踪的部分。在油漆的面部图象的这个最新建议的概念超过在美容从一个脸数据库塑造,并且由从一样的脸图象推断颜色和质地从不同图象处于成像条件避免变化的问题的由宣传的画方法传统。我们的系统生产是几乎没看见的缺点的无缝的脸。

  • 标签: 图像识别 图像修复 人脸重建 特征点提取
  • 简介:Inthispapermodellingofthetranslationalmotionoftransportationrail-guidedcartwithropesuspendedpayloadisconsidered.Thelinearlymovingcart,drivenbyatravelmechanism,ismodelledasadiscretesixdegreesoffreedom(DOF)dynamicsystem.ThehoistingmechanismforloweringandliftingthepayloadisconsideredandisincludedinthedynamicmodelasoneDOFsystem.DifferentialequationsofmotionofthecartelementsarederivedusingLagrangiandynamicsandaresolvedforasetofreal-lifeconstantparametersofthecart.Atwo-sidedinteractionwasobservedbetweentheswingingpayloadandthetravelmechanism.Resultsforkinematicalandforceparametersofthesystemareobtained.Averificationoftheproposedmodelwasconducted.

  • 标签: 平移运动 悬浮载荷 摇动载荷 数学建模
  • 简介:Itisfoundthatthereisanupper-limitcriticalpowerforself-guidedpropagationofintenselasersinplasmainadditiontothewell-knownlower-limitcriticalpowersetbytherelativisticeffect.Abovethisupper-limitcriticalpower,thelaserpulseexperiencesdefocusingduetoexpulsionoflocalplasmaelectronsbythetransverseponderomotiveforce.Associatedwiththeupper-limitpower,alower-limitcriticalplasmadensityisalsofoundforagivenlaserspotsize,belowwhichself-focusingdoesnotoccurforanylaserpower.Boththeupper-limitpowerandthelower-limitdensityarederivedtheoreticallyandverifiedbytwo-dimensionalparticle-in-cellsimulations.Thepresentstudyprovidesnewguidanceforexperimentaldesigns,whereself-guidedpropagationoflasersisessential.

  • 标签: LASER plasma interaction LASER WAKEFIELD ACCELERATION
  • 简介:ThephotonicspinHalleffect(SHE)hasbeenintensivelystudiedandwidelyapplied,especiallyinspinphotonics.However,theSHEisweakandisdifficulttodetectdirectly.Inthispaper,weproposeamethodtoenhanceSHEwiththeguided-wavesurface-plasmonresonance(SPR).Bycoveringadielectricwithhighrefractiveindexonthesurfaceofsilverfilm,thephotonicSHEcanbegreatlyenhanced,andagianttransverseshiftofhorizontalpolarizationstateisobservedduetotheevanescentfieldenhancementneartheinterfaceatthetopdielectriclayerandair.Themaximumtransverseshiftofthehorizontalpolarizationstatewith11.5μmisobtainedwhenthethicknessofSifilmisoptimum.ThereisatleastanorderofmagnitudeenhancementincontrastwiththetransverseshiftintheconventionalSPRconfiguration.OurresearchisimportantforprovidinganeffectivewaytoimprovethephotonicSHEandmayoffertheopportunitytocharacterizetheparametersofthedielectriclayerwiththehelpofweakmeasurementsanddevelopmentofsensorsbasedonthephotonicSHE.

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  • 简介:<正>Theauthorswouldliketoapologizeforanerrorfoundintheacknowledgementsectiononpage79.Theacknowledgementshouldread:ThisworkissupportedinpartbyNationalBasicResearchProgramofChina(GrantNo.2013CBA01501)andNational

  • 标签: GUIDED UPPER INTENSE CUBE Magic PARTIALLY
  • 简介:Weinvestigatethethree-dimensional(3D)scatteringproblemofanincidentplaneshearhorizontalwavebyapartlythrough-thicknessholeinanisotropicplate,inwhichtheLambwavemodesarealsoincludedduetothemodeconversionsbythescatteringobstacleinthe3Dproblem.AnanalyticalmodelispresentedsuchthatthewavefieldsareexpandedinallofpropagatingandevanescentSHmodesandLambmodes,andthescatteredfar-fieldsofthreefundamentalguidedwavemodesareanalyzednumericallyfordifferentsizesoftheholesandfrequencies.ThenumericalresultsareverifiedbycomparingwiththoseobtainedbyusingtheapproximatePoisson/Mindlinplatemodelforsmallholeradiusandlowfrequency.ItisalsofoundthatthescatteringpatternsaredifferentfromthoseoftheSOwaveincidence.Ourworkisusefulforquantitativeevaluationoftheplate-likestructurebyultrasonicguidedwaves.

  • 标签: 三维散射 水平面 剪切 MINDLIN 入射 通孔