基于改进的mc与mt方法的三维重建研究与实现

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1、东北大学硕士学位论文AbstractTheResearchandImplementationof3DReconstructionBasedonImprovedMCandMTMethodAbstractPresently,the3Dreconstructionofmedicalimageshasgainedinternalandoverseascomprehensiveattentioninthefieldsofmedicaltreatmentandimageprocessing．Itsapplication

2、inhumanol缈，tissuesorfocusCanrepresenttheobjectsmoredirectlyandprecisely,helpingdoctorsanalyzethemquantitatively,improvingtheveracityofdiagnosis．Imagesegmentationisbasisof3Dreconstructionandcandirectlyaffectthespeedandresultsof3Dreconstruction，SOtheimagesar

3、esegmentedbeforereconstructedinthisthesis．Imagesegmentationisadifficultyandbottleneckofimageprocessing，SOitisoneofhardpointsinthisthesis．Thethesisresearchesthetraditional3Dreconstructionmethods．Themethodsof3Dreconstructionaremainlydividedintotwogroups：Surf

4、aceRenderingandDirectVolumeRendering．TheSurfaceRenderingmethodisappliedwidelyincorrelativefieldsbecameofitscelerityandbetterinteractivecapability．MarchingCubesalgorithm(MC)isoneofclassicalSurfaceRenderingmethods，buthastheproblemoftopologyambiguity．Marching

5、Tetrahedral(MT)methodwasdevelopedbasedonMCmethodanditCanavoidthetopologyambiguityinacertainextent，butithasdecomposingambiguityandproducesoverabundancetriangles．Intermsoftheproblemsabove，thisthesisproposestheconceptionofpyramiddecomposing,combinesMCmethodan

6、dMTmethodandputsforwardaselfadaptivemixed—decomposingmethod．ThemethodCannotonlyresolvetheproblemoftoomanytriangles，butalsoavoidtopologyambiguityanddecomposingambiguity．Finally,arenderingacceleratingalgorithmbasedondatabufferstoragetechnologyissuggestedtoim

7、provetheefficiencyofmixed-decomposingmethod．Inordertorepresenttheorgallssyllabify,thisthesisproposesanimprovedregiongrowingmethodthatcangrowinadjacentimages．Then，basedontheabovemixed—decomposingmethod，thesegmentedimagesarereconstructed．Atlast，themethodsint

8、histhesisarevalidatedthroughexperiments．．．111．．东北大学硕士学位论文Keywords：pyramiddecomposing；mixed·decomposing；MarchingCubes；3Dreconstruction；RegionGrowingmethod．1V一东北大学硕士学位论文目录目录独创性声明⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯’l摘要⋯⋯⋯⋯