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  • Figure-ground assignment based on shading
  • インエイ ニ モトヅク ズチ ノ ワリアテ

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説明

We examined whether shading is a determinant of figure and ground assignment by using Rubin's face/vase patterns which were defined by shaded disks. The results of Experiment 1 showed that a region filled with top-lit disks was perceived as being a figure, and that depth from shading between the regions is a strong cue for figure and ground assignment. In Experiment 2, we checked whether the depth from shading inside the regions was also one of the factors for figure and ground assignment. Consequently we confirmed that shading inside the regions was not the decisive factor. In Experiment 3, the results indicated that the depth from shading between the regions was still a strong factor for figure and ground assignment in prolonged exposure. Therefore we suggest that shading can mediate figure and ground assignment and that there may be a boundary-surface representation in shading perception.

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