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12 个结果
  • 简介:一个全球运动评价方法在这份报纸基于柔韧的统计被介绍。由使用追踪的特征点而不是整个图象象素估计参数,这进程加快。为了推进,加快这个过程并且避免数字不稳定性,对这个问题的变质药描述被给,并且这个问题的答案的三种类型被比较。由使用二个步过程,评估者的坚韧性也被改进。自动起始的价值选择是这个方法的一个优点。建议途径被一套例子说明,它以高速度显示出好结果。CLC数字TN911.73

  • 标签: 运动估计 鲁棒性 鲁棒统计学 轨迹特征点
  • 简介:MotionEstimationBasedonGlobalandLocaCompensabilityAnalysisTXMotionEstimationBasedonGlobalandLocalCompensabilityAnalysisFanJin...

  • 标签: :Motion ESTIMATION algorithm FRAME DIFFERENCE CONTRAST
  • 简介:Anovelimagestabilizationsystemispresented,whichconsistsofaglobalfeaturepointtrackingbasedmotionestimation,aKalmanfilteringbasedmotionsmoothingandanimagemosaicbasedpanoramiccompensation.Theglobalmotionisestimatedusingfeaturepointmatchinganditerationwiththeleast-squaremethod.Then,theKalmanfilterisappliedtosmooththeoriginalmotionvectorstoeffectivelyalleviateunwantedcameravibrationsandfollowtheintentionalcamerascan.Lastly,thelossinformationofim...

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  • 简介:Theproblemofrobustifyinglinearquadraticregulators(LQRs)foraclassofuncertainaffinenonlinearsystemsisconsidered.First,theexactlinearizationtechniqueisusedtotransformanuncertainnonlinearsystemintoalinearoneandanoptimalLQRisdesignedforthecorrespondingnominalsystem.Then,basedontheintegralslidingmode,adesignapproachtorobustifyingtheoptimalregulatorisstudied.Asaresult,thesystemexhibitsglobalrobustnesstouncertaintiesandtheidealslidingmodedynamicsisthesameasthatoftheoptimalLQRforthenominalsystem.Aglobalrobustoptimalslidingmodecontrol(GROSMC)isrealized.Finally,anumericalsimulationisdemonstratedtoshowtheeffectivenessandsuperiorityoftheproposedalgorithmcomparedwiththeconventionaloptimalLQR.

  • 标签: LQRs 非线性系统 系统分析 系统工程
  • 简介:BlockmatchinghasbeenusedformotionestimationandmotioncompensationintheAu-dioandVideoStandard(AVS)foryears.Whilehavinganacceptableperformanceindescribingmo-tionbetweenframes,itrequiresquiteafewbitstorepresentthemotionvectors.Incertaincircum-stances,theuseofglobalmotionestimationandcompensationwouldperformequallywellorevenbetterthantheblockmatchingintermsofmotionaccuracy,whileitresultsinthecodingofglobalmotionmodelparameters.Inthisletter,wemodifyanAVScoderbyadding(1)sixglobalmotionmodelparameterstotheframeheader,and(2)modeselectionamongINTRA,SKIP,INTER-16×16,INTER-16×8,INTER-8×16,INTER-8×8,andGlobalMotionCompensation(GMC)modesbyLa-grangeoptimalrate-distortioncriteria.Simulationresultsdemonstratethatover0.1dBimprovementinPSNRisobtainedcomparedtotheAVScoderforanaveragecodedP-framewiththesamebit-rate.

  • 标签: 计算机技术 设计方案 通信技术 网络
  • 简介:卫星运营商SESGlobal公司的转发器利用率在2006年期间提高到74.5%,到2006年底,在1019个可商用的转发器中有760个在使用中。

  • 标签: SES 业绩 转发器 运营商 利用率 卫星
  • 简介:Inthispaper,wepresentanovelregion-basedactivecontourmodelbasedonglobalin-tensityfittingenergyinavariationallevelsetframework.Meanwhile,aninternalenergytermisin-troduced,anditforcesthelevelsetfunctiontobeclosetoasigneddistancefunction.Imageglobalinformationutilizedefficientlymakestheproposedmodelinsensitivetonoise,andtheintroducedpenaltytermcanavoidthecostlyre-initializationfortheevolvinglevelsetfunction,whichnotonlyspeedsupthecontourevolvement,butalsoimprovesaccuracyofthefinalcontour.Comparisonswithotherclassicalregion-basedmodels,suchasChan-VesemodelandRegion-ScalableFitting(RSF)model,showtheadvantagesofourmodelintermsofefficiencyandaccuracy.Moreover,themodelisrobusttonoise.

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  • 简介:Inthispaper,anovelframework,namedasglobal-localfeatureattentionnetworkwithrerankingstrategy(GLAN-RS),ispresentedforimagecaptioningtask.Ratherthanonlyadoptingunitaryvisualinformationintheclassicalmodels,GLAN-RSexplorestheattentionmechanismtocapturelocalconvolutionalsalientimagemaps.Furthermore,weadoptrerankingstrategytoadjustthepriorityofthecandidatecaptionsandselectthebestone.TheproposedmodelisverifiedusingtheMicrosoftCommonObjectsinContext(MSCOCO)benchmarkdatasetacrosssevenstandardevaluationmetrics.ExperimentalresultsshowthatGLAN-RSsignificantlyoutperformsthestate-of-the-artapproaches,suchasmultimodalrecurrentneuralnetwork(MRNN)andGoogleNIC,whichgetsanimprovementof20%intermsofBLEU4scoreand13pointsintermsofCIDERscore.

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  • 简介:Somesufficientconditionsfortheglobalexponentialstabilityandlowerboundsontherateofexponentialconvergenceofthecellularneuralnetworkswithdelay(DCNNs)areobtainedbymeansofamethodbasedondelaydifferentialinequality.Themethod,whichdoesnotmakeuseofanyLyapunovfunctionals,issimpleandvalidforthestabilityanalysisofneuralnetworkswithdelay.Somepreviouslyestablishedresultsinthispaperareshowntobespecialcassesofthepresentedresult.

  • 标签: 全局指数稳定性 收敛速度 细胞式神经网络 延迟差分不等式
  • 简介:CooperativepathdynamicplanningofaUCAV(unmannedcombatairvehicle)teamnotonlyconsidersthecapabilityoftaskrequirementofsingleUCAV,butalsoconsidersthecooperativedynamicconnectionamongmembersoftheUCAVteam.AcooperativepathdynamicplanningmodeloftheUCAVteambyapplyingaglobaloptimizationmethodisdiscussedinthispaperandthecorrespondingmodelisbuiltandanalyzed.Bytheexamplesimulation,thereasonableresultacquiredindicatesthatthemodelcouldmeetdynamicplanningdemandunderthecircumstanceofmembershipfunctions.Themodeliseasytoberealizedandhasgoodpracticability.

  • 标签: 动态规划模型 全局优化方法 无人作战飞机 合作 路径 UCAV
  • 简介:在2017年度IEEE国际电子组件会议(IEDM)上,Intel与GlobalFoundries分别介绍了让人眼前一亮的新一代工艺技术细节。英特尔(Intel)透露了将在10nm工艺节点的部分互连层采用钻(cobalt)材料的计划细节,Global—Foundries则是介绍该公司将如何首度利用极紫外光(EUV)光刻技术决战7nm工艺节点。

  • 标签: 光刻技术 英特尔 工艺 Intel 电子组件 IEEE