Walking with virtual people Evaluation of locomotion interfaces in dynamic environments.[2017][IEEE Trans Vis Comput Graph][10.1109tvcg.2017.271466

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1、Thisarticlehasbeenacceptedforpublicationinafutureissueofthisjournal,buthasnotbeenfullyedited.Contentmaychangepriortofinalpublication.Citationinformation:DOI10.1109/TVCG.2017.2714665,IEEETransactionsonVisualizationandComputerGraphicsJOURNALOFTVCG,VOL.XX,NO.X,AUGUST20161Walkingwithvirtualpeople:Eva

2、luationoflocomotioninterfacesindynamicenvironmentsAnne-Hel´eneOlivier,JulienBruneau,RichardKulpa,andJulienPettr`e,´LifeFellow,IEEEAbstract—Navigatinginvirtualenvironmentsrequiresusingsomelocomotioninterfaces,especiallywhenthedimensionsoftheenvironmentsexceedtheonesoftheVirtualRealitysystem.Locomo

3、tioninterfacesinducesomebiasesbothintheperceptionoftheself-motionorintheformationofvirtuallocomotiontrajectories.Thesebiaseshavebeenmostlyevaluatedinthecontextofstaticenvironments,andstudiesneedtoberevisitedinthenewcontextofpopulatedenvironmentswhereusersinteractwithvirtualcharacters.Wefocusonsit

4、uationsofcollisionavoidancebetweenarealparticipantandavirtualcharacter,andcomparedittopreviousstudiesonrealwalkers.Ourresultsshowthat,asinreality,theriskoffuturecollisionisaccuratelyanticipatedbyparticipants,howeverwithdelay.WealsoshowthatcollisionavoidancetrajectoriesformedinVRhavecommonproperti

5、eswithrealones,withsomequantitativedifferencesinavoidancedistances.Moregenerally,ourevaluationdemonstratesthatreliableresultscanbeobtainedforqualitativeanalysisofsmallscaleinteractionsinVR.WediscusstheseresultsintheperspectiveofaVRplatformforlargescaleinteractionapplications,suchasinacrowd,forwhi

6、chrealdataaredifficulttogather.IndexTerms—Locomotion,Interaction,Evaluation,Experiment,CollisionAvoidance,VirtualReality.F1INTRODUCTIONAVIGATIONisafundamentalrequirementinmanyaresult,realisticinteractionsbetweenarealhumanandaNVirtualReality(VR)applications.Alotofresearchvirtualcharacterfirstrequire

7、thattherelativemotionwithhasbeendevotedtothedesignofefficientlocomotionthevirtualcharacteriscorrectlyperceived,andriskoffuturetechniquestovirtuallywalkinimmersive3Denvironments.collisiondetected.Second,itisrequiredthatt