• DocumentCode
    2218828
  • Title

    Is face recognition in pictures affected by the center of projection?

  • Author

    Liu, Chang Hong

  • Author_Institution
    Dept. of Psychol., Hull Univ., UK
  • fYear
    2003
  • fDate
    17 Oct. 2003
  • Firstpage
    53
  • Lastpage
    58
  • Abstract
    Recognition of unfamiliar faces can be severely impaired when two pictures of a face are taken from different camera distances. This effect of perspective transformation may be predicted either by a model-based theory, for which the impairment shows a difficulty in constructing the 3D surface geometry, or by an image-based theory, for which it results from dissimilarity between 2D images. To test these hypotheses, we tested recognition performance in which face images were viewed either at their center of projection (the camera position) or at other distances. Based on past findings [A.L. Nicholls, et al. (1993)], [T. Yang, et al. (1999)] the same position should help correct marginal distortions of shapes due to large perspective convergence and hence facilitate reconstruction of 3D shape from perspective cues. However, the results showed little support for this prediction. The lack of 3D shape reconstruction and the effects of image similarity provided favorable evidence for the image-based theory of face recognition.
  • Keywords
    cameras; computational geometry; face recognition; image reconstruction; image representation; 3D shape reconstruction; 3D surface geometry; camera distance; face recognition; image representation; image-based theory; model-based theory; perspective cues; perspective transformation; Cameras; Convergence; Face recognition; Geometry; Image recognition; Image reconstruction; Predictive models; Shape; Solid modeling; Testing;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Analysis and Modeling of Faces and Gestures, 2003. AMFG 2003. IEEE International Workshop on
  • Print_ISBN
    0-7695-2010-3
  • Type

    conf

  • DOI
    10.1109/AMFG.2003.1240824
  • Filename
    1240824