Effect of planar cuts' orientation on the perceived surface layout and object's shape.

Full Abstract

The effect of the orientation of the cutting planes producing planar curves over the surface of an object on its perceived pose and shape was investigated for line drawings representing three-dimensional objects. The results suggest that the orientational flow produced by the surface curves introduces an apparent object rotation in depth and in the image plane and changes in its perceived elongation. The apparent location of the nearest points is determined by the points of maximal view-dependent unsigned curvature of the surface curves. The data are discussed in relation to the interaction of the shape-from-silhouette system and shape-from-contour system and its effect on the interpretation of the surface contours with respect to the surface geometry.

Author information

Author/s: Bocheva, Nadejda (N);

Affiliation: Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria. nadya(-atsign-)percept.bas.bg

Journal and publication information

Publication Type: Journal Article

Journal: Acta psychologica (Acta Psychol (Amst)), published in Netherlands. (Language: eng)

Reference: 2009-Jul; vol 131 (issue 3) : pp 178-93

Dates: Created 2009/07/06; Completed 2009/10/13;

PMID: 19481718, status: MEDLINE (last retrieval date: 10/13/2009, IMS Date: )

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