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The role of terminators and occlusion cues in motion integration and segmentation: a neural network model

Liden, Lars H. and Pack, Christopher C. (1999) The role of terminators and occlusion cues in motion integration and segmentation: a neural network model. [Journal (Paginated)]

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Abstract

The perceptual interaction of terminators and occlusion cues with the functional processes of motion integration and segmentation is examined using a computational model. Inte-gration is necessary to overcome noise and the inherent ambiguity in locally measured motion direction (the aperture problem). Segmentation is required to detect the presence of motion discontinuities and to prevent spurious integration of motion signals between objects with different trajectories. Terminators are used for motion disambiguation, while occlusion cues are used to suppress motion noise at points where objects intersect. The model illustrates how competitive and cooperative interactions among cells carrying out these functions can account for a number of perceptual effects, including the chopsticks illusion and the occluded diamond illusion. Possible links to the neurophysiology of the middle temporal visual area (MT) are suggested.

Item Type:Journal (Paginated)
Keywords:motion integration, motion segmentation, MT, terminators, occlusion, modeling, perception
Subjects:Neuroscience > Computational Neuroscience
Neuroscience > Neural Modelling
ID Code:131
Deposited By:Pack, Christopher
Deposited On:28 Jan 2000
Last Modified:11 Mar 2011 08:53

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