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Photorealistic Learned Landscapes for Augmented Reality
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Photorealism aftereffect.

Jun'ichiro Seyama1, Ruth S Nagayama

  • 1Department of Psychology, Faculty of Letters, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan. Lseyama@mail.ecc.u-tokyo.ac.jp

Psychological Research
|July 24, 2010
PubMed
Summary

A novel visual aftereffect demonstrates that viewing artificial images shifts photorealism judgments. This suggests the human visual system uses photorealistic images as a norm for judging realism.

Area of Science:

  • Perceptual psychology
  • Computer vision
  • Image processing

Background:

  • Perceptual aftereffects are changes in perception following adaptation to a stimulus.
  • Previous research has explored aftereffects in various visual domains, but not specifically for photorealism judgments.
  • Understanding the norms guiding perceptual judgments is crucial for explaining visual processing.

Purpose of the Study:

  • To investigate a novel visual aftereffect related to photorealism judgments.
  • To determine if observing artificial images influences the perception of photorealism.
  • To explore whether photorealistic images serve as a reference point in visual perception.

Main Methods:

  • Participants performed a category boundary task, identifying the transition point between photographs and artificial images (paintings, sketches).

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  • Adaptation phase involved observing either photographs or artificial images for one minute.
  • The category boundary task was repeated after the adaptation phase to measure changes in judgment.

    • Main Results:

    • Observation of artificial images led to a shift in judgments, making participants perceive images as less photorealistic (a photorealism aftereffect).
    • Observation of photographs did not induce a significant aftereffect.
    • The results align with the principle that exposure to norms does not typically cause aftereffects.

    Conclusions:

    • Photorealistic images appear to function as a norm for judging the photorealism of other images.
    • The human visual system may process the photorealism of artificial images by evaluating their deviation from a photorealistic standard.
    • This finding offers insights into the mechanisms underlying visual perception and the establishment of perceptual norms.