Three-dimensionally slanted illusory contours capture stereopsis.
In stereo capture a stereogram of a crossed illusory figure pulls a texture bounded by the illusory contours to the same depth plane with the illusory figure. We investigated whether three-dimensionally curved and slanted illusory figures could capture a repeating background texture. According to results, stereoscopic capture was perceived when a disparate illusory contour was slanted provided that the period of the background texture was consistent with the three-dimensional geometry of the illusory surface. We suggest that stereo capture is actually induced by disparate rows of points defined by vertical cut-out sectors and the induced disparity spread is constrained by illusory contours and possible discrete matches of the background texture.
Häkkinen
J
J
Department of Psychology, University of Helsinki, Finland. jukka.hakkinen@helsinki.fi
Liinasuo
M
M
Kojo
I
I
Nyman
G
G
D000328:Adult; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D009903:Optical Illusions / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D011601:Psychophysics