一种基于混合模型的实时虚拟人服装动画方法

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1、万方数据计算机研究与发展ISSN1000·1239／CN11．1777／TPJournalofComputerResearchandDevelopment47(1)：8—15，2010一种基于混合模型的实时虚拟人服装动画方法毛天露夏时洪朱小龙王兆其(中国科学院计算技术研究所前瞻研究实验室北京100190)(hm@let．ae．en)Real-TimeGarmentAnimationBasedonMixedModelMaoTianlu，XiaShihong，ZhuXiaolong，andWangZhaoqi(AdvancedComputingResearchLaboratory，Inst

2、ituteofComputingTechnology，ChineseAcademyofSciences，Beijing100190)AbstractReal—timegarmentanimationcouldgeneratevividclothanimationon3Dvirtualavatarsunderthelimitationofcomputationaltimecost．Itpotentiallyhasbroadapplicationsinfieldsofgames，entertainment，garmentindustry，etc．Theproblemsconcentrate

3、onhowtoestablishacomputationalmodelwhichcouldgeneratevisuallyplausiblegarmentanimationundertherestrictionofreal—timecomputing．Currently，clothanimationmodelscouldbedividedintotwocategoriesbasedonthepropertiesoffabric．Theyarephysical—basedmodelsandgeometric—basedmodels．Theformerhastheadvantageofvi

4、sionrealismandthelatterhastheadvantageofhighefficiency．Mixedmodels，whichcombinephysical—basedmodelsandgeometric-basedonestogether，areeffectivewaysforreal—timeclothanimation．Inthispaper，anewmixedmodelforgarmentanimationbasedonthesampledataispresented．Insampledata，collisionbetweenclothandbodyarein

5、vestigatedbyaprobabilityanalysismethodforpredictingcorrelationbetweenclothmotionandbodymotion．Sothatclothcouldbecompartmentalizedreasonablyundersuchcorrelationandmixedtwodifferenttypesofclothanimationmodels．Thenewmixedmodelcouldsupportreal—timeclothanimationandhasamechanismfordynamiccontrolofeff

6、iciency．Ithasthefollowingadvantages：Firstly，itcouldautomaticallymixtwodifferentmodels；Secondly，itcouldsupportreal—timeclothanimation；Thirdly，theefficiencycouldbecontrolleddynamically；Finally，thecompartmentalizationofclotharemoresubtlyandreasonable．Experimentsshowthatcomparedwiththemethodbasedons

7、taticdistance，clothanimationresultsofourmethodaremoreclosetophysical-basedanimationresultsunderthesameefficiency．Keywordsvirtualreality；garmentanimation；mixedmodel；collision；realtimeanimation摘要实时服装动画生成技术能够为三维虚拟角色实时地生成逼真的服装动态