The use of facial motion and facial form during the processing of identityBarbara Kanppmeyer, Ian M. Thornton,Heinrich H. BulthoffPresented by: Yinan Fan 2007-3-29Face Static? Dynamic? =>facial motionsFacial Motion? Two Hypothesis: Representation enhancement Help build 3D faces Supplemental information Idiosyncratic signature of independent source of information Dependent factors: Type of facial motion Degree of familiarity with the faces Viewing conditionWeighted factors?Weighted factors?Facial Motion Two categories Rigid motion Non-rigid motion Facial Form:= unchangeable aspectsFacial Motion:=deformable over time Investigate the integration of facial motion and facial form, the relavance of form cuesGeneral Methods Participants Laser scanned heads and morphing techniques Motion capture and animation Training Procedure Testing ProcedureGeneral Methods Participants Exp1: 16m/13f Exp2: 12m/15f Exp3: 7m/9f Exp4: 7m/9f No repetitionGeneral Methods Participants Laser scanned heads and morphing techniquesGeneral Methods Participants Laser scanned heads and morphing techniques Motion capture and animation Real actors trained for facial expression Markers tracked from 25f/s clilps (by famous3D Pty. Ltd :) Motion patters applied to 3D models of human facesAnimation TechniquesGeneral Methods Participants Laser scanned heads and morphing techniques Motion capture and animation Training Procedure Questionnaire assessing personality traitsGeneral Methods Participants Laser scanned heads and morphing techniques Motion capture and animation Training Procedure Testing ProcedureExperiment 1 Purpose Stimuli and Procedure Results DiscussionsExperiment 1 Purpose:establish whether incidentally learned facial motion patterns would bias perceptionExperiment 1 Purpose Stimuli and ProcedureSimuliProcedureExperiment 1 Purpose Stimuli and Procedure ResultsResultsResultExperiment 1 Purpose Stimuli and Procedure Results DiscussionsExperiment 2 Purpose:More natural conditionsExp2a: Original inner featuresExp2b: Indivisual skin texture applied Stimuli and Procedure: Each morph only five timesResultsResultsExperiment 3 Purpose Upside down face Simuli and procedure Trained as in Exp2, tested upside downResultsResultsExperiment 4 Purpose: “Family resemblance” task To eliminate effects on subtle features in the animated face Stimuli and ProcedureResultsFinally… Conclusion: Non-rigid facial motion biased observer’s perception of identityFinally… Conclusion: Non-rigid facial motion biased observer’s perception of identity
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