Articulation effects of 3D backgrounds in the simultaneous lightness contrast illusionстатьяТезисы
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Аннотация:Articulation effects can influence the strength of lightness illusions (Gilchrist et al., 1999,
Psychological Review, 4 (109), 795-834). We investigated the role of 3D articulated
backgrounds in the perception of the simultaneous lightness contrast (SLC) illusion. The 2D
articulated version of the SLC illusion was used to construct different 3D displays. They
consisted of test squares which were moved out of the backgrounds and three different types of
3D backgrounds: 1) 2D patches 2) cubes 3) balls. The luminance range was 1:230. The 2D
articulated version of the SLC illusion and three types of 3D displays were presented using the
CAVE system. Twenty five observers (age range 17—30) were tested. The method of constant
stimuli was used to measure the illusion strength. The results showed that the illusion strength
decreased for all 3D displays relative to the 2D articulated version. There were no significant
differences between different types of 3D displays. It seems that articulation effects in the
perception of 3D SLC illusion weakly depend on the type of 3D backgrounds.
Supported by RFBR grant 12-07-00146a.