三维矢量场可视化方法研究

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1、AbstractInrecentyears，theresearchaboutthree-dimensionalinformationonthefieldofgeo—science，includinggeology,hydrology,meteorology,fluiddynamics，geodesy，etc．isgrowing．3Dvisualization嬲themostintuitiveandefficientwayofgetinformationhasauniqueadvantageinexpressinformation．Vectorfielddescribesl

2、otsofveryimportantandcommonphysicalphenomenon．Vectorfieldvisualizationisapowerfultooltounderstandthelawsofmotionofthevectorfieldandplaysanimportantroleinscientificcomputingandengineeringanalysis．IthaSbeenwidelyusedingeologicalexploration，aStronomyandmeteorology,aerospaceandotherfields．Wit

3、htherapiddevelopmentofcomputationalfluiddynamics，weurgentlyneedatechnologythatcarlhelpresearchersunderstandthelawoflargedatasets．EspeciallyintheEngineeringCalculations、EarthScience，vectorfieldresearchersneedtolesstime-consumingandbetterperformancevisualizationmethods．Visualizationofthree-

4、dimensionalvectorfieldhaSalwaysbeentheimportantanddifficulttovisualization．Currently,three-dimensionalvectorfieldcanbedescribedbyPointiconmethod，Vectorline，Vectorsurfaces，VectortubeEtc．EventhoughstreamlineandPointiconmethodearlshownthetrajectoriesofvectorfieldinthree-dimensionalspace，buti

5、tcan’treflecttheoverallfeaturesofthevectorfield．Three-dimensionaltexturemethodproposedsomesolutions，buttherenderingqualityisrelativelypoor．Inthispaper,weusedthree-dimensionalvectorfielddatawhichproducedbygeosciencesmechanismandprocesssimulation，dependedontheexistingalgorithmsandimplementa

6、tionsofthree-dimensionalvectorfield，andusedthefusionexpressionanddynamicinteractionmethodofthree—dimensionalvectorfieldandscalarfield，torealizetheReal—timethree-dimensionalvectorfielddynamicrendering．Atthesametime，weadoptthetechnologyoftetrahedralmulti·resolutionmeshadaptivegenerationtofu

7、rtherimprovethequalityofthree·dimensionalvisualizationwhichexpressedbytheexistingthree-dimensionalvectorfieldvisualizationalgorithmandbringingintoeffectofreal·timethree-dimensionalvectorfielddynamicrendering．(1)Tetrahedralmulti·resolutionmeshadaptivegenerationAccord