三維虛擬人皮膚逼真變形方法的評估.pdf

1、中國石油大學（華東）碩士學位論文三維虛擬人皮膚逼真變形方法的評估姓名：邢玉美申請學位級別：碩士專業(yè)：計算機技術(shù)指導教師：李宗民20081001Evaluationoflifelikeskindeformationmethodfor3DvirtualhumanXingYumei(ComputerTechnology)DirectedbyProfLiZongminAbstractVirtualhumanorcomputersynthesiz

2、edcharactersisarepresentationofhumanbodyandbehaviorinavirtualenvironmentgeneratedbycomputerWiththemoreextensiveapplicationofvirtualhumaninvirtualrealityentertainment，surgicalsimulation，etc，realtimeandlifelikedisplayofvir

3、tualhumanbecomemoreandmoreimportantThesurfaceskinofvirtualpersonisthebodyoutersurfaceskin，anditisthemostimportantandfineandcomplicatedpartofthevirtualhuman，SOtherealtimelifelikedeformationofskiniscrucialtoreal—timeand1if

4、elikeofvirtualhumanThispaperistoclassifythemoresuccessfulfourskindeformationintotwoclassesnamedsurfacemodelskindeformationandmultilayeredmodelskindeformationaccordingtothegeometricmethodanditgivesassessmentComparisonande

5、valuationbasedonthesurfacemodeltwoalgorithmsgeneralizedcrosssectionalmethodandgeneralizedcrosssectionofthebodyskinmethodofrealtimelifelikedeformationGeneralizedcrosssectionalmethods：allthevertexesinthearbitraryskinmeshar

6、edividedintogroupsaccordingtogivenruleThenwecangainsmoothskindeformationbymanagingthegeneralizedcrosssectionThismethodcanholdthedetailsofthegivenskinmeshandthereforeobtainrealisticdeformationwhenvirtualhumaniSanimatedThe

7、sectionisobtainedinthestandardstate，SOitisnotapplicableforanygivenmodelofvirtualpersonMethodofbodyskinreal—timedeformationbasedonthegeneralizedcrosssection：Werefinethegeneralcross—sectionalcontourmethod，basedonwhichgener

8、alcross—sectionalcontourswereperfectlycreatedaccordingtothedifferentfeaturesondifferentpartsofhumanbodyHowevergroupingregulationsarecomplicatedandwecannotmakemanysamplingpointsbyusinginterpolationjointsadjustment，therefo

9、reitcannotmeettherequirementofrealtime21Thetwoalgorithmsbasedonthemultilayered—modelThecomparisonandassessmentofskindeformationofthelimbsandsimplified3rdNFFDalgorithmwhichisbasedonanerrorconstrainofthevirtualhumananthrop

10、ometryThedeformationoflimbsskinwithincertainscopeCansatisfythecharacteristicsofrealtimeandlifelike，butitisnotapplicabletoskindeformationofwholebodyKeywords：virtualhuman，generalcross—sectionalcontourmethod，surfacemodel，mu