简介：Thehumanvisionsystemcanreconstructa3Dobjecteasilyfromsingle2Dlinedrawingsevenifthehiddenlinesoftheobjectareinvisible.Now,therearemanymethodshaveemulatedthisability,butwhenthehiddenlinesoftheobjectareinvisible,thesemethodscannotreconstructacomplete3Dobject.Therefore,weputforwardanewalgorithmtosettlethishardproblem.Ourapproachconsistsoftwosteps:(1)infertheinvisibleverticesandedgestocompletethelinedrawing,(2)proposeavertex-basedoptimizationmethodtoreconstructa3Dobject.

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简介：你是否酷爱音乐，又追求时尚，甚至拥有一副挑剔的耳朵呢？不要着急，在这个冬天，跟我们一起宠爱耳朵吧！这次声音专家Sennherser特别推出的新款移动耳机系列：包括贴耳式URBANITE与罩耳式URBANITEXL，它们均响应都市风格，带来浑厚低音享受和纯净音色，让我们仿佛置身于俱乐部股的热闹喧腾之中。

简介：Thispaperpresentsadirectmethodtofindtheinternalfaces.Itusesfoursetsofinformation:1getthecoordinatesofeachpointonthe3Dcompositeobjects;2basedonthe3Dcoordinatestocalculatealltheplaneequationoftwoobjects;3calculatealltheintersectinglinesofthetwoobjectsandexcludetheintersectinglineswhicharenotwithinthescopeoftheplane;4findingtheinternalface,theremainingintersectinglinesformedtheplaneistheinternalfaceofthetwoobjects.Weproposedanewalgorithmforfindinginternalfaces.Thisalgorithmcouldbeadaptedtoanyregularcompositeobjects.Thealgorithmworkswellforfindinginternalfaces.

简介：3Dobjectscanbestoredincomputerofdifferentdescribingways,suchaspointset,polyline,polygonalsurfaceandEuclideandistancemap.Momentinvariantsofdifferentordersmayhavethedifferentmagnitude.Amethodfornormalizingmomentsof3Dobjectsisproposed,whichcansetthevaluesofmomentsofdifferentordersroughlyinthesamerangeandbeappliedtodifferent3Ddataformatsuniversally.Thenaccuratecomputationofmomentsforseveralobjectsispresentedandexperimentsshowthatthiskindofnormalizationisveryusefulformomentinvariantsin3Dobjectsanalysisandrecognition.

简介：《物联网总体技术智能传感器接口规范》、《物联网总体技术智能传感器特性与分类》以及《智能记录仪表通用技术条件》等3项国家标准编制工作组在上海召开了制定启动会。

简介：动漫造型的设计是一项依赖于脑力、创造力以及想象力的活动，能够体现出知识经济的特点，其中需要交互式的图形系统和分析计算为主的计算机辅助设计系统，这样才能为设计人员提供工具，实现人机交互．但是这并不能为设计人员的创造性思维有所帮助，也不能支持协同设计。本文首先对3D动漫造型的发展情况进行简述，之后分析3D动漫造型协同创新设计研究现状，结合现状提出3D动漫造型协同创新设计方法，从而引发动漫产业在国际市场上的发展，保证期发展前景的广阔性。

简介：Currently,3Dprintingofthecharacterdollsisaverypracticalapplicationfortheaverageperson.Butthemodelofdollwhichcanbeobtainedisstaticsothepostureofthedollissingle.Ontheotherhand,themodificationofthemodelisverydifficulttonon-professions.Thispaperproposesanrapidgenerationmethodofcharacterdollwithrotatablelimbs,whichisthroughaddingthespherejointtothedoll’smodelautomatically.Afterthemodelissegmentedbydrawingalineinteractively,thespherejointiscreatedbasedonthesegmentationboundarythroughentitymodelingmethod.Lastlythetwomodelsofthedollandthejointarecompositedandprinted.Somedoll’smodelaretestedontheFDM(FusedDepositionModeling)3Dprinterusingthisprocess.Theresultsaremoreinterestingandtheefficiencyhasbeengreatlyimprovedcomparedwithmodifyingthemodelmanually.

简介：Mobileplatformisnowwidelyseenasapromisingmultimediaservicewithafavorableusergroupandmarketprospect.Tostudytheinfluenceofmobileterminalmodelsonthequalityofsceneroaming,aparametersettingplatformofmobileterminalmodelsisestablishedtoselecttheparameterselectionandperformanceindexondifferentmobileplatformsinthispaper.Thistestplatformisestablishedbasedonmodeloptimalityprinciple,analyzingtheperformancecurveofmobileterminalsindifferentscenemodelsandthendeducingtheexternalparameterofmodelestablishment.Simulationresultsprovethattheestablishedtestplatformisabletoanalyzetheparameterandperformancematchinglistofamobileterminalmodel.

简介：在进行虹膜扫描识别时,最重要的部分是进行虹膜的特征提取.本文设计一种单频2D-Gabor滤波器,对归一化后的虹膜图像进行编码匹配.实验证明,当虹膜对比库规模不大的情况下,单频率能够较快速的进行虹膜特征提取与识别,与多通道相比更为适用.

简介：银行发来奇怪短信近期，有不少市民反映经常在手机上收到95588、10086、95559发出的短信，诱骗市民打开短信提示的链接，通过向手机安装木马程序，来实施盗刷银行卡的犯罪行为。很多市民已经发生财产损失，到公安机关报案。