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  Testing the limits of identity recognition with mixed-identity faces

Bülthoff, I., & Zhao, M. (2018). Testing the limits of identity recognition with mixed-identity faces. Poster presented at 18th Annual Meeting of the Vision Sciences Society (VSS 2018), St. Pete Beach, FL, USA.

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Bülthoff, I1, 2, 3, Autor           
Zhao, M1, 2, 3, Autor           
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
3Project group: Recognition & Categorization, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528707              

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 Zusammenfassung: Similarly to how we look for telltale signs of both parents’ facial features in their children’s faces, we are able to recognize two identities from one photo that mixes two persons’ faces together. When more people’s faces are used to create mixed faces, the identities of individual faces (i.e., “parent” faces) become less recognizable (i.e., identity information is degraded). In our study, we investigated the limit of identity recognition in such identity-degraded faces and whether familiarity with the “parent” faces enhances identity recognition from such mixed faces. We first tested whether people can extract the identities from a mix of three faces. Participants who were familiar with the “parent” faces performed better than those who were not. We then tested whether participants can extract the identities of mixed faces generated with more faces. We showed a mixed face of 2 to 10 “parent” faces together with a test face. Participants had to decide whether the test face was a parent of the mixed face. Both familiar and unfamiliar participants performed better than chance for mixed faces generated with up to eight faces. Finally, we tested at what level mixed faces lose their identity so that we cannot discern between two mixed faces generated with completely different “parent” faces. We presented two mixed faces in a trial and participants performed a same/different task. Both mixed faces had the same number of identities (2 to 32), but had no parents in common. Participants were better than chance even for the 32-face mixed faces. Together, these results indicate that our face processing system is extremely sensitive to facial identity information. Familiarity helps identity recognition, but this advantage becomes less evident when identity information degrades (i.e., with increased number of “parent” faces in a mixed face).

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 Datum: 2018-09
 Publikationsstatus: Erschienen
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 Identifikatoren: BibTex Citekey: BulthoffZ2018
DOI: 10.1167/18.10.157
 Art des Abschluß: -

Veranstaltung

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Titel: 18th Annual Meeting of the Vision Sciences Society (VSS 2018)
Veranstaltungsort: St. Pete Beach, FL, USA
Start-/Enddatum: 2018-05-18 - 2018-05-23

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Titel: Journal of Vision
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Charlottesville, VA : Scholar One, Inc.
Seiten: - Band / Heft: 18 (10) Artikelnummer: 23.457 Start- / Endseite: 157 Identifikator: ISSN: 1534-7362
CoNE: https://pure.mpg.de/cone/journals/resource/111061245811050