基于LIC矢量場(chǎng)可視化算法的研究.pdf

1、江南大學(xué)碩士學(xué)位論文基于LIC矢量場(chǎng)可視化算法的研究姓名：余永勝申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：顧耀林20070501江南人學(xué)傾Ij學(xué)位論史TheAlgorithmResearchBasedOnLICVisualizationinVectorFieldGraduateStudent：1nYongShengGraduateTeacher：GuYaoLinSpecialty：ComputerApplicationandTec

2、hnology，Abstractvisualizationjnscientificcomputing(vIsc3isakindofnewlydevelopedsubiectinthe1980sItjsbasedonComputerGraphicsandImagemanipulationtechnologyandthecalculationresultwillbechangedgraphicsimagewhichisdisplayedon

3、thescreenforinteractiveprocessingItgreatlyimprovestheprocessspeedandqualityofcalculateddataandrealizesthemodernizationofscientifictoolandenvironmentViacomputergraphicstechniquesittransfo丌nsdataproducedbyscientificcomputi

4、ngintogeometricgraphicsorimagessothattheycanbcdisplayedonscreensandbemanipulatedinteractivelyNowVISChasbecomeastrongtoolforthediscoveryandunderstandingofmanyscientificphenomena，andregardedthesecondcomputerrevolutionaryLi

5、lieIntegraIConvolutionisatexturebasedmethodin2DvectorfieldItcanfullydisclosetherelativityamongeveryspotofthevectorfieldinaddition，themethodrelatestospotnoise，filterconvolution，renderandtexturemappingEvenjnthevectordirect

6、ionchangingsharplyfields，themethodcanshowthedirectionofthevectorfieldwell，anddisplaydetailsofthevectorfieldbetterTheimagegeneratedbythismethodtakesoncontinuityandfineSothemethodhasafairlygoodprospectTheLICbasedmethodisau

7、suallyusedmethodforvectorfieldvisualization11lou曲thetheoryofLIChasbeensomewhatperfectitsappliedresearchstilIhasbeendevelopedandrenovatedThteeaspects，vectorfieldvisualizationbasedLIC，F(xiàn)astLlC，improvedLIChavebeenresearchedi

8、ntheDaperBasedontheanalysisintheseresearchactualities，somealgorithmsandideashavebeenproposedandtherelevanttestresultandanalysishavebeengivenThemainresearchcontentsareasfollowsUCandFastLICalgorithmareintroducedbasedonthed

9、iffefencebetweentriangularfilterkerneIsandboxfilterkernels，wehavevisualizationexperimentationsusingLineIntegralConvolutionwithtriangularfilterkernelsaswellaswithboxfilterkernelsAlthoughtheformerhasasatisfactoryresult，iti

10、snotfasterthantheapproachwithboxfilterkernels，Inaddition，weanalyzethereasonstogettheresultalsoLineIntegralConvolution(LICljsapowerfultechniqueforvectorfieldvisualizationIntroducedin1993，themethodhasbeenusedrapidlyinmanya

11、pplicationareas，rangingfromcomputerartstoscientificvisualizationInthevisualizationprocessofLICthestreamlinetracingisaveryimportantsteptraditionallytheEulermethodisoftenusedincalculatingstreamlinetracing，butitrequiresmore

12、computationsandoftengetsemanativeJntegraJresultsInthepaperdependingofftheemanativedegreeofvectorfieldinordertoaltertheIntegrallengthautomatically，weuseamethodofvariationaJIntegraJlengthtotracevectorfieldTheexperimentatio