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500 个结果
  • 简介:我们允许的现在的算法与水彩颜料画外观的3D景色的即时显示。我们的途径提供视觉复杂性的适当简化,模仿水彩颜料的典型自然效果,;提供二种必要的画技术:wet-on-wet;wet-on-dry画。我们基于图象空间处理而非在准确模拟上专注于有效算法。这允许3D景色的即时显示。在一张动画期间,高frame-to-frame连贯能由于一个稳定的分割计划被完成。最后,我们无缝地从3D景色用信息把光滑的照明集成到水彩颜料图象。

  • 标签: 计算机制图 实时绘制 水彩画 复杂性
  • 简介:Thereal-timedispatchingmodelonbussystemisstudiedinthisarticle.Realtimedispatchingcanresumetheplannedschedulequickly,andthentoensurethereliabilityofthepublictransportserviceandtowellraisetheservicequality.

  • 标签: 公共运输 实时调遣 可靠性 服务质量
  • 简介:Renderingoflarge-scaleforestscenesisachallengingtask,whosehighlygeometriccomplexitywillputheavyburdenoncurrentgraphicshardware.Whennavigatingthescene,theoverallvisualresultisgenerallyconsideredasthecoreconcern.Anewmethodisproposedinthispaperforlarge-scaleforestrenderingusingclusteringandmergingstrategies.Ourmethodimprovestherenderingeffectbyclusteringpolygonsaccordingtothepointinformationwithrelationtoneighbours.Afastforestrenderingsystemisdevelopedaccordingly.Therelativetechniquesinthesystemcanimprovethevisualqualityondemandofdifferentapplications.

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  • 简介:Three-dimensionelectronicchartdisplayinformationsystem(ECDIS)isoneofthenewdevelopingdirectionsofelectronicnavigationchart,anditsreal-timequalityisoneoftheimportantrequirements.Inthispaperthealgorithmofsimplifyingtrianglesurfaceusingedgecontraction,whichcanensurethereal-timedisplayofobjectsinseabedenvironment,wasputforward.TheoptimumcontractionpointwasdeterminedbytheLagrangematrix,sothatthealgorithmensuresthatthecontractionpointlocatesontheoriginalmodel,meanwhilemeetsthedemandsofleastdeviation.Thisalgorithmcanimprovetheplottingspeed,andpreservetheboundarycharacterbyusingthefewertrianglestosimulateobjects.

  • 标签: 三维电子海图显示信息系统 边界收缩 模式简化 实时显示算法
  • 简介:Actionrefinementforreal-timeconcurrentprocesseswithurgentinteractionsisstudied,whereapartial-ordersetting,i.e.,timedbundleeventstructures,isusedasthesystemmodelandareal-timeLOTOS-likeprocessalgebraisusedasthespecificationlanguage.Itisshownthattheproposedrefinementapproacheshavethecommonlyexpectedproperties:(1)thebehaviouroftherefinedprocesscanbeinferredcompositionallyfromthebehaviouroftheoriginalprocessandfromthebehaviouroftheprocessessubstitutedforactions;(2)thetimedextensionsofpomset(partiallyorderedmultiset)traceequivalenceandhistorypreservingbisimulationequivalencearebothcongruencesundertherefinement;(3)thesyntacticandsemanticrefinementscoincideuptotheaforementionedequivalencerelationswithrespecttoacpo-baseddenotationalsemantics.

  • 标签: 程序设计语言 语义学 协同程序 计算机
  • 简介:Thenoisedatainverticalcomponentrecordsof85seismicstationsinFujianProvinceduring2012isusedastheresearchobjectinthispaper.Thenoisedataisdividedintofiveminutesegmentstocalculatethepowerspectra.Thehighreferencelineandlowreferencelineofstationarethenidentifiedbydrawingaprobabilitydensityfunctiongraph(PDF)usingthepowerspectralprobabilitydensityfunction.Moreover,accordingtotheanomaliesofPDFgraphsin85seismicstations,theabnormalnoiseisdividedintofourcategories:droppedpacket,lownoise,highnoise,andmediannoiseanomalies.Afterwards,fourselectionmethodsarefoundbythehighorlownoisereferencelineofthestations,andthesystemofreal-timemonitoringofseismicnoiseisformedbycombiningthefourselectionmethods.Noiserecordsof85seismicstationsinFujianProvinceinJuly2013areselectedforverification,andtheresultsshowthattheanomalousnoise-recognitionsystemcouldreacha90%successrateatmoststationsandtheeffectofselectionareverygood.Therefore,itcouldbeappliedtotheseismicnoisereal-timemonitoringinstations.

  • 标签: 实时监测系统 地震噪声 异常噪声 概率密度函数 地震台站 噪声数据
  • 简介:Thispaperdescribesamulti-threatreal-timeseparatingsystemforbroadbandanti-radiationmissileseeker.Itpresentsamethod,withadual-portmemoryascomparer,toperformPFandPWhardwarereal-timeseparationandtodeterminethetime-of-arrival(TOA)byuseofsequentialdifferencehistogram(SDIF).Themethodhasbeenappliedtopractice,whichhasachievedgoodresults.

  • 标签: Signal separating TOA to PRI DUAL-PORT
  • 简介:Complexurbansceneryisgenerallycomposedofgiganticamountofdetailedbuildings,efficientrepresentationandrenderingareessentialforitsvisualization.Wepresentanacceleratingmethodforurbanvisualization.Ourapproachcanoptimizetheorganizationofmodelsinaccordancewiththequadtreebasedterrain,whichmakestheparallelizationeasier.Throughminimizingthedrawcallwithinonerenderingprocess,ourapproachcanreducethetimecostofeachframeandimprovetheframerategreatly.Hereby,oursystemcanhandlelarge-scaledetailedmodelswithhighdiversityandalsocanaffordtheabilitytoadjusttherenderingstrategyautomaticallyaccordingtothestateofthehardware.

  • 标签: 实时可视化 城市建筑 城市景观 加速方法 时间成本 自动调整
  • 简介:ThetraditionalorientedFASTandrotatedBRIEF(ORB)algorithmhasproblemsofinstabilityandrepetitionofkeypointsanditdoesnotpossessscaleinvariance.Inordertodealwiththesedrawbacks,amodifiedORB(MORB)algorithmisproposed.Inordertoimprovetheprecisionofmatchingandtracking,thispaperputsforwardanMOKalgorithmthatfusesMORBandKanade-Lucas-Tomasi(KLT).ByusingKalman,theobject’sstateinthenextframeispredictedinordertoreducethesizeofsearchwindowandimprovethereal-timeperformanceofobjecttracking.TheexperimentalresultsshowthattheMOKalgorithmcanaccuratelytrackobjectswithdeformationorwithbackgroundclutters,exhibitinghigherrobustnessandaccuracyondiversedatasets.Also,theMOKalgorithmhasagoodreal-timeperformancewiththeaverageframeratereaching90.8fps.

  • 标签: 对象跟踪 实时性能 可变形 算法 物体 尺度不变性
  • 简介:Thispaperanalyzesthecurrentdifficultiesencounteredinon-lineinspectionsystemsofstripsurfacequality,specificallyrelatingtoproblemswithreal-timeprocessingofhugeamountsofdata.Toaddressthisneed,thispaperdescribesanFPGA-basedhigh-speedimageprocessingmodulewithbothhardwareandsoftwareaspects.Improvingthesetwoaspectstogetherwillhelpthesystemachievereal-timeprocessingofmassiveimagedata,andsimplifiesthearchitectureofthestripsurfacequalityon-lineinspectionsystem.

  • 标签: 实时图像处理系统 FPGA 带钢表面质量 质量检测系统 图像处理模块 在线检测系统
  • 简介:Simulationandrenderingoflarge-scalenaturalenvironments,especiallytheocean,hasalwaysbeenoneofthehotissuesincomputergraphics,whichcanproviderealismforvariousapplicationssuchascomputergame,movieandmilitaryusage.Simulationofoceanenvironmentisoftenlackofrealismforreal-timeapplicationduetoitscomplexityofdynamicwaves.Inthispaper,amethodbasedonFFTWavemodelisproposedtosolvethisproblem,whichcanalsosimulatetheoceanopticpropertywithatmospherescattering.Furthermore,ourmethodhasalotofadvantagesincludingglobaloceandatasetsupport,real-time,dynamicreflectionofocean,thefoamonthewave,smoothtransitionfromdeepoceantoseacoast,etc.Theexperimentalresultsdemonstratetherealismandeffectivenessofourapproach.

  • 标签: 海洋环境 实时绘制 计算机图形学 实时应用 计算机游戏 自然环境
  • 简介:ThispaperextendstheSPHmethodtogassimulation.TheSPH(SmoothedParticlesHydrodynamics)methodisthemostpopularmethodofflowsimulation,whichiswidelyusedinlarge-scaleliquidsimulation.However,itisnotfoundtoapplytogassimulation,sincethosemethodsbasedonSPHcan’tbeusedinreal-timesimulationduetotheirenormousparticlesandhugecomputation.ThispaperproposesamethodforgassimulationbasedonSPHwithasmallnumberofparticles.Firstly,themethodcomputesthepositionanddensityofeachparticleineachpoint-in-time,andoutlinestheshapeofthesimulatedgasbasedonthoseparticles.Secondlythemethodusesthegridtechniquetorefinetheshapewiththediffusionofparticle’sdensityunderthecontrolofgrid,andgetmorelifelikesimulationresult.Eachgridwillbeassigneddensityaccordingtotheparticlesinit.Thedensitydeterminesthefinalappearanceofthegrid.Forensuringthenaturaltransitionofthecolorbetweenadjacentgrids,wegiveadiffuseprocessofdensitybetweenthesegridsandassignappropriatevaluestovertexesofthesegrids.Theexperimentalresultsshowthattheproposedmethodcangivebettergassimulationandmeettherequestofreal-time.

  • 标签: 光滑粒子流体力学 气体模拟 实时仿真 光滑粒子流体动力学 SPH方法 网格技术
  • 简介:Theconventionaldatawarehousecanonlyanalyzehistoricaldata.Thispaperproposesaconceptofagent-basedreal-timedatawarehouseinBIsystem,Withthismodelwecanimprovethereal-timeperformanceofdatawarehouse.Ontheotherhand,theBIsystemflexibilityisenhancedinthismodel,whichmakesitmuchmoreefficienttomanagethedistributedenvironment.

  • 标签: 数据仓库 代理模型 实时处理 BI系统
  • 简介:把技术基于数字图象处理,一个即时系统被开发监视并且检测设计结构的动态排水量。由用一个自我规划的软件处理图画,在某个坐标系统的一个目标的即时坐标能也被获得,并且推进动态排水量数据和目标罐头的曲线被完成。数据的也就是说自动的聚会并且即时处理能被这个系统同时执行。首先,为这个系统,一种未触动过的监视技术被采用,罐头它监视或检测目标几到几百米分开;第二,它有灵活安装状况和亚毫米度的好监视精确;第三,它是合适的为动态、伪动态、静态大工程结构监视。通过大桥的几测试和应用程序,系统的好可靠性和优势被证明。

  • 标签: 大型土木工程结构 动态位移 远距离实时监测系统 位移观测
  • 简介:"Real-TimeSpeechRecognitionSystem"(RTSRS),developedbyInstituteofAcous-ticsAcademiaSINICA,washonoredbyaninternationalaward(25,000FF)athightechnolgyexhibition《TechnologieetComp(?)tivit(?)》heldatGrenobleofFranceonOctober1988.Morethan10,000exhibitsfrom12countrieswerepresentedand4exhibitswerehonoredawards.Thetechnicalcommiteeoftheexhibition"Real-TimeSpeechRecognitionSystem"(RTSRS),developedbyInstituteofAcous-ticsAcademiaSINICA,washonoredbyaninternationalaward(25,000FF)athightechnolgyexhibition《TechnologieetCompétivité》heldatGrenobleofFranceonOctober1988.Morethan10,000exhibitsfrom12countrieswerepresentedand4exhibitswerehonoredawards.ThetechnicalcommiteeoftheexhibitionacknowlegedthattheRTSRShasspecialadvancedcharacteristicsbothintechnicalimprovementandineconomicusage.(YUTiecheng)

  • 标签: honored EXHIBITION RECOGNITION Acous AWARD USAGE
  • 简介:ToperformthegroundtestofaspaceborneSyntheticApertureRadar(SAR)system,anechosimulatorwiththecharacteristicsofmultimode,multi-assemblage,andrealtimeisproposedinthispaper.Ahardwareplatformofthereal-timeechosimulatorbasedontheVPXbusisdesigned.Withthisplatform,real-timemulti-pointechogenerationandscenariotargetsechogenerationcanbeachievedbythereal-timesignalprocessinginFieldProgrammableGateArray(FPGA),utilizingtheparameterscalculatedbytheindustrycomputers.Furthermore,thisplatformcanoutputdifferentsignalsifitisexpandedtomulti-channels,makingitpossiblefortheassignmentofechogenerationandtestindifferentspaceborneSARmodes.ThetestresultswiththeactualSARsystemshowthatthisplatformcansatisfythesystemrequirementsandisnowusedinpractice.

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