September 2015
Volume 15, Issue 12
Vision Sciences Society Annual Meeting Abstract  |   September 2015
Changing camera-to-subject distance changes face matching performance
Author Affiliations
  • Eilidh Noyes
    Department of Psychology, University of York
  • Rob Jenkins
    Department of Psychology, University of York
Journal of Vision September 2015, Vol.15, 162. doi:10.1167/15.12.162
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      Eilidh Noyes, Rob Jenkins; Changing camera-to-subject distance changes face matching performance. Journal of Vision 2015;15(12):162. doi: 10.1167/15.12.162.

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      © ARVO (1962-2015); The Authors (2016-present)

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Accurate face recognition is easy for viewers who are familiar with the faces concerned, but highly error prone for viewers who are unfamiliar with them (Bruce, 1986; Burton et al. 1999). An influential proposal is that people become good at recognizing a face by learning its configuration—specifically, distances between facial features. Here we test this proposal experimentally using a natural manipulation of these distances. Harper & Latto (2001) showed that changing camera-to-subject distance also changes distances between features. However, their pioneering study did not test implications of these image changes for identification performance. Following Harper & Latto (2001), we photographed volunteer models at both Near (32 cm) and Far (270 cm) viewing distances, resulting in changes to inter-feature distances in the image, confirmed by anthropometry (Kleinberg et al. 2007). Experimental participants who were either Familiar (N = 22) or Unfamiliar (N = 23) with these faces viewed pairs of images in a matching task that required Same Identity or Different Identity judgments. Images were paired to create Same Distance (i.e. Near+Near or Far+Far) and Different Distance (Near+Far or Far+Near) conditions. Familiar viewers performed accurately in both the Same Distance condition (M = 99%, SE = .29) and the Different Distance condition (M = 97%, SE = .89). In contrast, Unfamiliar viewers performed much more poorly in the Different Distance condition (M = 81%, SE = 1.42) than in the Same Distance condition (M = 91%, SE = 1.04). The finding that Familiar viewers were impervious to these non-linear changes in facial configuration suggests that familiar face recognition is not strongly dependent on distances between features in the face image.

Meeting abstract presented at VSS 2015


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