虛擬牙齒矯正系統(tǒng)中牙齒移動路徑規(guī)劃研究.pdf

1、西安科技大學碩士學位論文虛擬牙齒矯正系統(tǒng)中牙齒移動路徑規(guī)劃研究姓名：王增波申請學位級別：碩士專業(yè)：計算機應用技術(shù)指導教師：李占利20070420Subieet：AStudyofPathPlanningforToothMovementinVirtualOrthodonticsTreatmentSysternSpecialty：ComputerapplicationtechnologyName：wangzengb。(signature)堡豳

2、：!!竺生Instructor：LiZhanliABSTRACT(Signature)c；z^觚kPathplanningfortoothmovementisaveryimportantpartinthevirtualorthodonticstreatmentsystemHowtodesignthepathoftoothmovcmcllt，whichnotonlyguaranteesacollisionfreepathwithminin

3、lUlntravelingdistancebutalsorequiressmoothnessandclearance，isaverycomplicatedproblemandisalsowhatthepaperconcentratesonThus，allapproachforthepathplanningbasedonthegeneticalgorithmisproposedinthepaperbyanalyzingtheinvisib

4、lealignertechnologyandthemeritandshortcomingofvariouspathplanningmethodsInaccordancewiththecharacteristicofpathplanningproblemeachcomponentofthealgorithmsareanalyzedcarefullyincludingissuedefinitionchromosomerepresentati

5、onpathevaluationgeneticoperatorsdesignandGAparametersselectionFirstly，theloadingmodelisdevelopedonthebasisofanalyzingthepropertyoftheSTLfileTheHashtablemethodforthereconstructionofdentognathicmodelsfromSTLfilesispresente

6、dandtherenderingandthreedimensionalvisualizationofdenmlmodelaieallimplementedinOpenOLenvironmentThenafast3Dmeshsegmentationmethodusinginteractivemarkersandthresholdfordentognathicmodelssegmentationisalsoproposedandapplie

7、dintheteethsegmentationWec鋤getthesegmenteddentitionmodelswhichpavethewayforthetoothmovementpathplanningSecondly，themovingprocessofteethmodelCanbechangedtoaseriesofpathpointaccordingtowhichthemathematicalmodelofpathplanni

8、ngisestablishedWeconvertthemultiobjectiveproblemintothesingleobjectiveproblemexpressedbythemeanofevaluatingthefinenessfunctionofweightslimofdistancelengthandcollisionstrengthAndthepathoftoothmovementiscomputedbyusingroul