Picture surface illusion in parallel perspective
Picture surface illusion in parallel perspective

Summary/Abstract: In the picture-surface illusion, 2D features on the picture’s surface are seen biased towards their 3D referent e.g. an angle of 200 depicting a 900 corner of a cube is seen as 300 . We tested linear and parallel perspective drawings of cubes with cube drawings subtending 50 to 500 . The picture-surface illusion occurs for both parallel and linear perspective drawings, at about equal strength. We argue that the 3D information at work may be the aspect ratio of a quadrilateral depicting the tilt of the cube’s top face.

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