60320.三維地形數(shù)據(jù)存儲(chǔ)和調(diào)度方法研究

1、華中科技大學(xué)碩士學(xué)位論文三維地形數(shù)據(jù)存儲(chǔ)和調(diào)度方法研究姓名：溫菊屏申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：系統(tǒng)分析與集成指導(dǎo)教師：周建中20040511IIAbstractItisthebasicdeminthelargescale3Dterrainwalkthroughsystemthatthelargescale3Dterraincanbedisplayeddynamicallywithhighframeratesaccdingtousers’in

2、teractiveinstructions.ItisimpossiblethatalltheDEMtexturedataofthesceneareloadedintomemytoberenderedbecauseofthecomplexity.SooneofthekeytechnologiesofthelargescalewalkthroughsystemishowthemassivedataofDEMtextureshouldbega

3、nizedstedwhichreasonableeffectivedynamicalschedulestrategyofscenedatashouldbeused.Twoaspectsareconcernedwhenrendering3Dterrain:onewayisthatitisrealizedinthestageofdatabeingloadedfromstagetomemybythetechnologyofeffectiveg

4、anizationofdataLODpreviouslyprocesseddynamicallyloadingdatatomemythroughvisibilitycullingeffectivemanagementinmemytheotheristhatinthestageofdatabeingrenderedinmemytherenderingtriangles’numberisreducedbefescenebeingrender

5、edbythewaysofreasonablesimplificationofthedatainmemyusingthetechnologyofpolygonsimplificationmultiresolutionmodel.Atpresentoptimizingalgithmsareconcernedwiththeabovetwoaspects.Thefirstaspectismainlydiscussedinmyessay.Ren

6、deringtechnologyoflargescalesceneatpresentareintroducedinmyessay.Typicalstagewaysaresummarizedanalyzedconcernedwithlargescalemassivescenedata.CombinedtotheprojectofQingjiangRiverwalkthroughsystemareasonabledivisionmethod

7、isdescribed.Basedonthedatastructuretheideaofdynamicalprescheduleafeasibledynamicalpreschedulealgithmisdesignedwiththemultithreadtechnologywhichenhancestheframeraterealizesthedisplaysmoothnesscontinuityofthelargescalescen