虚拟手术系统中模拟手术场景的渲染和平台的构建

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1、上海交通大学硕士学位论文虚拟手术系统中模拟手术场景的渲染和平台的构建姓名：郑广超申请学位级别：硕士专业：计算机软件与理论指导教师：顾力栩20081201虚拟手术系统中模拟手术场景的渲染和平台的构建4.对整个手术系统的框架进行了模块化的重建，运用了设计模式的知识，对模块间的交互等进行低耦合设计，大大的提高系统的可扩展性和可维护性。5.把用OpenGL实现的血流渲染子模块整合到虚拟手术训练系统平台中。创新的设计出使用VTK的多边形源数据模拟OpenGL原语的整合方法。关键字：虚拟现实，流体力学，流体渲染，粒子系统，系统模块化II虚拟手术系统中模拟手术场景的渲染和平台的构建

2、SIMULATIONRENDERINGOFSURGICALSCENEANDPLATFORMCONSTRUCTIONINVIRTUALSURGERYSYSTEMABSTRACTthEvensincethelate20century,thetechniqueofmicroinvasivesurgery(MIS),representedbyendoscopy,hasbeendevelopingveryfast.Comparedwiththetraditionalsurgery,MIShasmanyadvantagessuchaslimitedinjury,fastrecov

3、ery,littlecomplication,shortanesthesiatime.Asaresult,MIShasbeenappliedextensively.However,doctorscanonlyseeoperationareathroughendoscope,whichhasgreatlylimiteddoctors’sightrange.SothischaracteristicofMIShasbroughtsignificantdifficultytosurgeons,wholargelydependonexperiencetoperformsuchs

4、urgery.Thisfacthasrenderedtheimportanceofpre-surgerytraining.ThepurposeofthevirtualsurgerysystempresentedbythisthesisistoassistinprovidingMIStrainingenvironmentfordoctorsbytheaimofcomputervirtualrealitytechnology,sothatitwilltakelesstimeandcostontrainingbeforedoctorscanactuallyperformth

5、esurgery.ThemainpurposeofthisthesisistoresearchhowtorenderarealisticsurgicalsceneforMISandbuildadecoupledstructureforvirtualsurgerysystemplatform.FirsthalfofthisthesishasfocusedonnumericalmethodofNavier-Stokesequationsusingfluiddynamicstheoryinordertosimulateinternalbleedingwhichwillobs

6、curetheviewofendoscope.Doctorshavetobetrainedhowtodealwiththisemergencyduringsurgery.Sobleedingsimulationisimportantthistrainingsystem.Therestofthethesistellsthemethodsofsimulatingthefloatersintissuefluid,texturemappingofsurgicalscenebackgroundandmodelingofsurgicalinstrument.Allthesesim

7、ulationsmakethesystemmorerealistic.Thelastpartexplainsthestructureandmodulesofthewholedecoupledsystem,givessomeexperimentalresultofourmodulesanddescribeshowtointegratebleedingrenderingmoduleintoIII虚拟手术系统中模拟手术场景的渲染和平台的构建theexistingsystem.Themainachievementandinnovationislistedas