chapter1 计算机1教学课件

PART1METHODOLOGIES&SKILLSChapter1

HowtoMakeaResearchPresentation1chapter1计算机1ThinkAbout…Whendoyouneedtomakearesearchpresentation?Haveyoueverhadanexperienceofmakingapresentation?Howdoyoufeelaboutit?Whatisthecommonstructureofapresentation?Andwhichpartsareimportantandmustbeexplainedclearly?Whatshouldyoupayattentiontowhenyougiveapresentation?Isthereanythingelsethatyouthinkisalsoimportantbuthasnotbeenmentionedinthetextbookforapresentation?2chapter1计算机1WhenWeNeedtoMakeaPresentationUsuallyweneedtopresentourresearchinaregularseminarorataconference.3chapter1计算机1WhatistheClearStructureofaPresentationTitleofthepresentation/name/affiliationoftheauthorOutlineWhy/WhatyouwanttodoPriorart/relatedwork/what’snewHowtodoResultsEvaluation:contributions/advantages/limitationsApplications/recommendationsConclusion/futurework4chapter1计算机1

Sample:

SocialAvatarLanguageforNaturalAvatar-BasedHumanCommunication

Dr.JinHouSouthwestJiaotongUniversity5chapter1计算机1OutlineWhatandWhywewanttodoRelatedworkandchallengesOurapproachResultConclusionandfuturework6chapter1计算机1SocialAvatarLanguage(SAL)Avatar?GraphicalrepresentationofarealpersoninavirtualenvironmentSAL?Avatars’nonverballanguageintermsofsocialcontextWhySAL?Ourbehaviorsareinfluencedbysocialfactorssuchasculture,profession,religion…Purpose!Natural,sociable,personalizedavatars7chapter1计算机1ChallengesWhereistheavatarfrom?Whatisthepersonalityoftheavatar?BodymovementismostlyneglectedandnotsynchronizedwiththefaceCommercialproductsareavailablebutusuallyrelyonthepre-authoredaudio8chapter1计算机1WhatHasBeenDonewithAvatarsMITMediaLab,JustineCassellgroupBEAT(BehaviorExpressionAnimationToolkit)PennsylvaniaUniv.,NormanI.BadlergroupEMOTE(ExpressiveMOTionEngine)Other:USC,NYU,F2F,Sony…9chapter1计算机1BEATAdvantages:Currentlythemostsatisfyinganimationtoolkitthatautomaticallyextractsactuallinguisticandcontextualinformationfromtexttosuggestappropriatehandandarmgestures,facialexpressions,andintonationofvoiceAllowsanimatorstoinserttheirpreferredpersonalities,motioncharacteristics,orotherparticularfeaturesinthefinalanimationDisadvantages:TheimperfectcomputationallinguisticsisthegreatestlimitationinBEAT’scurrentversionOnlyperformsforEnglishinput10chapter1计算机1EMOTEAdvantages:Offersamethodologicaltoolforcreatingpersonalizedagents,whichprovidesamethodofsynthesizingmovementsbycontrollingarelativelysmallnumberofparameters,andenablesahigherlevelofunderstandingcommunicativegesturesAcquiregestureswithemphasisonarmandbodyposturesthatarelargelyneglectedbyothersystemsDisadvantages:Notprovideaneffectiveandeasy-to-usetoolforaddressingthesocialcontextforavatarsNotconsidermultilingualinput11chapter1计算机1What’sNewinOurStudyNewconception:SALtoreflectthesocialbackgroundofanavatarEmphasisonculturalfactor:Japanese,Chinese,AmericanIncludingbodymovement,facialexpressionswithappropriateeyes,eyebrows,andmouthmovements12chapter1计算机1OurApproach-Ontology+VRMLVRML-basedH-AnimHumanoidOntologyModelAvatarModelingOntology(AMO):putstheanatomicconstraintsonavataranimationSocialContextOntology(SCO):associatesthesocialcontextwithavatars13chapter1计算机1AvatarModelingOntology(AMO)Definemeta-elements(segment,joint…),andfurtherelementslikebodyparts(arm,leg…)andfacialexpressions(happiness,fear,disgust…)Identity:distinguishesanentityfromtheothersintermsofgeometry,appearance,texture,colorandsoonDependency:describesalloftherelationshipsanentityhas,e.g.theupperarmadjoinstheforearm

14chapter1计算机1SocialContextOntology(SCO)Associatethesocialcontextwithanordinaryavatar-cultureontology,professionontology,familyontology,religionontologyDefinition:asetofontologyelements{Ψi|i=1,…,n},whereΨi=<vi,R’i,Ii,Idi>RelationshipGeneralization-Φgeneralization(Asian,Japanese)Disjoint-Φdisjoint(teacher,student)ExtensionMechanism:change/adapttheexistingontologyorintroduceanewontology15chapter1计算机1Client-ServerTopology

QuerySCO

Retrieval

Database

Server

Client

CommonGatewayInterface(CGI)

MappingManager

HTMLFile

VRMLFile

SemanticFeatureExtraction

SCOProfile

UserInterface

VRMLBrowser

CharacterDB

TransformDB

AnimationDB

SCODB

KeywordDB

16chapter1计算机1FlowChartofAnimationSynthesis

17chapter1计算机1

私(は)正座(しています)

(Iamsittingonmyheels)

18chapter1计算机1我去游泳

(Igoswimming)19chapter1计算机1IGoSwimming20chapter1计算机1FacialAnimation21chapter1计算机1Application（1）Graphicalchat22chapter1计算机1GraphicalChatDisplayconceptsthatwouldbeverydifficulttoexplainverballytopeoplefromdifferentcultures,suchas“seiza”inJapan,orTaiChiinChinaAtoolforenhancinginternationalunderstandingacrossculturalbarriersbyusingbothverbalandnonverbalchannelsCurrentspokenlanguagemachinetranslationsarenotsatisfying,ourSALcansupplementmachinetranslationandimproveunderstandingthroughprovidingavisualaid23chapter1计算机1Application（2）Virtualinterpreter24chapter1计算机1VirtualInterpreterIncreasebelievabilityandrealitybybothverbalandnonverbalbehaviorinvolved,especiallywithemotionalexpressionsApplicationtomanyfieldslikeweatherreporter,businessorotherserviceassistant,pedagogicalagent…25chapter1计算机1ConclusionWeoriginallyproposetouseontologyforaddressingthesocialcontextforavatarsIntegratesfacialexpressionswithbodygesturesEffectivemulti-naturallanguageprocessingalgorithmThissystemisindependentoftheenvironmentoftheclientsothatitiswidelyapplicableAnewinterestingandvaluablemethodologicaltoolforcreatingnatural,sociable,andpersonalizedavatars26chapter1计算机1FutureDirectionMoresocialaspects(ontologymodels):profession,religion,gender,interest…ExpandingtheinputintoothernaturallanguagesImprovethenaturallanguageprocessingalgorithm27chapter1计算机1

PayAttentionSpeakingisnotlikewriting!!!UsesimpleandclearwordsNeveruseambiguouswordsandcomplexsentencesFocusonthekeypointsAlwayslettheaudienceknowwhatyousaidandwhatyouaregoingtosayAboveall,whatyoureallyneedisjust:Alittlepassion+Alotofpractice!!!28chapter1计算机1

PracticalTricksAvoidgarishslidesBesurethatthewordsinslidesarebigenoughandreadableThebackgroundandcolorarecomfortableforaudienceThreelayersononeslideatmostUseunderstandablegraphics,imagesandtablesShowsomeattractiveandinterestingdemosinyourresearchDonotuseanimationstoooftenMoveonnaturally29chapter1计算机1

PracticalTricks