简介:Itisaresearchsubjectincomputervisionto3Dreconstructionofanobjectrepresentedbyasingle2Dlinedrawing.Previousworkson3Dreconstructionfrom2Dlinedrawingsfocusonobjectswithlines,plane,view,andsoon.Thispapermainlystudiesthe3Dreconstructionfrom2Dlinedrawings.Besides,anewapproachisproposed:itisthatfortheresearchofthepointcoordinatesof2Dlinedrawings,soastoachievetheobjectreconstructionbythereconstructionofpointcoordinates.Thereconstructionprocessincludes:①thecollectionofpointcoordinates(X,Y)of2Dlinedrawings;②thederivationofmathematicalformulaaboutthereconstructionofthepointof2Dlinedrawings,andcalculatingthecorrespondingpointofthe3Dcoordinates;③theregenerationof3Dgraphicswith3Dpoints;④analyzeerrorbytheproportionalofparallelofaxonometricprojection,inordertoprovetheaccuracyofthemethod.
简介:2D/3DIsometricTransformationUsingSpring_MasSystemFanJin1MathewM.F.Yuen2QifuWang1ZhouJi11TheCADCenterofTheHuazhongUnviersityof...
简介:新增功能一览完整对象和场景的输出与主流3D系统协同与高端合成系统衔接的输出选项草地编辑和动画高级网络渲染功能高效的渲染解决方案
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...