简介:很多人觉得,沉稳、踏实的风格其实正是企业管理软件的用户所需要的,他们不喜欢冒险,他们更喜欢一个多年以来都在持续、稳定地专注于这一领域的厂商,比如J.D.Edwards。
简介:Thehumanvisionsystemcanreconstructa3Dobjecteasilyfromsingle2Dlinedrawingsevenifthehiddenlinesoftheobjectareinvisible.Now,therearemanymethodshaveemulatedthisability,butwhenthehiddenlinesoftheobjectareinvisible,thesemethodscannotreconstructacomplete3Dobject.Therefore,weputforwardanewalgorithmtosettlethishardproblem.Ourapproachconsistsoftwosteps:(1)infertheinvisibleverticesandedgestocompletethelinedrawing,(2)proposeavertex-basedoptimizationmethodtoreconstructa3Dobject.
简介:Insteadoftraditionallyusinga3Dphysicalmodelwithmanycontrolpointsonit,acalibrationplatewithprintedchessgridandmovablealongitsnormaldirectionisimplementedtoprovidelargearea3DcontrolpointswithvariableZvalues.Experimentsshowthattheapproachpresentediseffectiveforreconstructing3Dcolorobjectsincomputervisionsystem.
简介:1IntroductionMechanicalCADsystemsuse3Dgeometricrepresentationtoformtheglobalproductinformationmodelforsatisfyingthewholelife...
简介:Asimplerobust'strutalgorithm'ispresentedwhich,whengivenagraphembeddedin3Dspace,thickensitsedgesintosolidstruts.Variousapplications,crystallographicandsculptural,areshowninwhichsmoothhigh-genusformsaretheoutput.Atoolboxofalgorithmictechniquesallowforavarietyofnovel,visuallyengagingformsthatexpressamathematicalaesthetic.Insculpturalexamples,hyperbolictessellationsinthePoincaréplanearetransformedinseveralwaystothree-dimensionalnetworksofedgesembodiedwithinaplausiblyorganicorganization.Bytheuseofdifferenttransformationsandadjustableparametersinthealgorithms,avarietyofattractiveformsresult.Thetechniquesproducewatertightboundaryrepresentationsthatcanbebuiltwithsolidfreeformfabricationequipment.Thefinalphysicaloutputsatisfiesthe'coolnesscriterion,'thatpassersbywillpickthemupandsay'Wow,that'scool!'