Haptics disambiguates vision in the perception of pictorial relief

M. W.A. Wijntjes, Robert Volcic, S. C. Pont, J. J. Koenderink, A. M.L. Kappers

    Research output: Contribution to journalConference article

    Abstract

    In this study we demonstrate that touch decreases the ambiguity in a visual image. It has been previously found that visual perception of three-dimensional shape is subject to certain variations. These variations can be described by the affine transformation. While the visual system thus seems unable to capture the Euclidean structure of a shape, touch could potentially be a useful source to disambiguate the image. Participants performed a so-called 'attitude task' from which the structure of the perceived three-dimensional shape was calculated. One group performed the task with only vision and a second group could touch the stimulus while viewing it. We found that the consistency within the haptics+vision group was higher than in the vision-only group. Thus, haptics decreases the visual ambiguity. Furthermore, we found that the touched shape was consistently perceived as having more relief than the untouched the shape. It was also found that the direction of affine shear differences within the two groups was more consistent when touch was used. We thus show that haptics has a significant influence on the perception of pictorial relief.

    Original languageEnglish (US)
    Article number72400L
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume7240
    DOIs
    StatePublished - Apr 7 2009
    EventHuman Vision and Electronic Imaging XIV - San Jose, CA, United States
    Duration: Jan 19 2009Jan 22 2009

    Fingerprint

    Haptics
    touch
    ambiguity
    Decrease
    Three-dimensional
    Visual Perception
    Visual System
    visual perception
    stimuli
    Affine transformation
    Euclidean
    Vision
    Perception
    Direction compound
    shear
    Demonstrate
    Ambiguity

    Keywords

    • 3D shape
    • Haptics
    • Pictorial relief
    • Visual perception

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

    Cite this

    Haptics disambiguates vision in the perception of pictorial relief. / Wijntjes, M. W.A.; Volcic, Robert; Pont, S. C.; Koenderink, J. J.; Kappers, A. M.L.

    In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 7240, 72400L, 07.04.2009.

    Research output: Contribution to journalConference article

    Wijntjes, M. W.A. ; Volcic, Robert ; Pont, S. C. ; Koenderink, J. J. ; Kappers, A. M.L. / Haptics disambiguates vision in the perception of pictorial relief. In: Proceedings of SPIE - The International Society for Optical Engineering. 2009 ; Vol. 7240.
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