The effect of 3D structure on motion segmentation

A smooth surface imaged on the retina produces a smooth flow field. Thus, the visual system may group regions of smoothly varying flow to segment surfaces. We tested this idea by having observers perform a segmentation task on several stimuli that differed in their 3D interpretations but were all ma...

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Bibliographic Details
Published in:Vision research (Oxford) 2000-01, Vol.40 (6), p.695-704
Main Authors: Bravo, Mary J, Farid, Hany
Format: Article
Language:English
Subjects:
2D motion
3D motion
Biological and medical sciences
Depth Perception - physiology
Fundamental and applied biological sciences. Psychology
Grouping
Humans
Motion Perception - physiology
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Retina - physiology
Segmentation
Space life sciences
Vision
Citations: Items that this one cites
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Description
Summary:A smooth surface imaged on the retina produces a smooth flow field. Thus, the visual system may group regions of smoothly varying flow to segment surfaces. We tested this idea by having observers perform a segmentation task on several stimuli that differed in their 3D interpretations but were all matched in the smoothness of their 2D flow fields. Performance varied across conditions with the best performance occurring when the stimulus simulated a rigid plane. This result suggests that while observers may use deviations from smoothness to segment a broad class of motion stimuli, they use a more precise strategy to segment stimuli with a familiar 3D interpretation.
ISSN:0042-6989
1878-5646
DOI:10.1016/S0042-6989(99)00201-1