The perception of 3D shape from planar cut contours

A new computational analysis is described for estimating 3D shapes from orthographic images of surfaces that are textured with planar cut contours. For any given contour pattern, this model provides a family of possible interpretations that are all related by affine scaling and shearing transformati...

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Bibliographic Details
Published in:Journal of vision (Charlottesville, Va.) Va.), 2011-10, Vol.11 (12), p.1-15
Main Authors: Egan, Eric J L, Todd, James T, Phillips, Flip
Format: Article
Language:English
Subjects:
Depth Perception - physiology
Discrimination Learning - physiology
Form Perception - physiology
Humans
Judgment - physiology
Orientation - physiology
Pattern Recognition, Visual - physiology
Photic Stimulation - methods
Psychophysics
Space Perception - physiology
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Summary:A new computational analysis is described for estimating 3D shapes from orthographic images of surfaces that are textured with planar cut contours. For any given contour pattern, this model provides a family of possible interpretations that are all related by affine scaling and shearing transformations in depth, depending on the specific values of its free parameters that are used to compute the shape estimate. Two psychophysical experiments were performed in an effort to compare the model predictions with observers' judgments of 3D shape for developable and non-developable surfaces. The results reveal that observers' perceptions can be systematically distorted by affine scaling and shearing transformations in depth and that the magnitude and direction of these distortions vary systematically with the 3D orientations of the contour planes.
ISSN:1534-7362
1534-7362
DOI:10.1167/11.12.15