Perception and Recognition of Normal and Negative Faces: The Role of Shape from Shading and Pigmentation Cues

DOI Web Site 被引用文献4件
  • Richard Kemp
    Division of Psychology, University of Westminster, 309 Regent Street, London W1R 8AL, UK
  • Graham Pike
    Division of Psychology, University of Westminster, 309 Regent Street, London W1R 8AL, UK
  • Peter White
    Division of Psychology, University of Westminster, 309 Regent Street, London W1R 8AL, UK
  • Alex Musselman
    Division of Psychology, University of Westminster, 309 Regent Street, London W1R 8AL, UK

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<jats:p> A face is surprisingly difficult to recognise when presented in photographic negative, and negation has also been shown to affect simple perceptual judgments about a face. Two possible explanations for this effect are examined. In the shape-from-shading explanation it is argued that negating an image results in an impossible pattern of shading, and that this disrupts the formation of a three-dimensional representation of the surface geometry of the face. In an alternative account for this effect it is suggested that identification errors occur as a consequence of changes to the apparent pigmentation of the face caused by negating the image. Three experiments are reported which are designed to test these explanations by using novel colour-image transformations in which the hue and luminance components of images are independently manipulated. The results of these studies suggest that although changes to the apparent pigmentation of a face might result in identification errors in some situations, the loss of shape-from-shading cues is a more important cause of the negation effect. The role of these two sources of information in the recognition of normal faces is also discussed. </jats:p>

収録刊行物

  • Perception

    Perception 25 (1), 37-52, 1996-01

    SAGE Publications

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