Automatically assigned DDC number: 00637

Manually assigned DDC number: 00637

Number of references: 0

Title: Stochastic Completion Fields: A Neural Model of Illusory Contour Shape and Salience

Author:

Author:

Subject: Lance R. Williams,David W. Jacobs Stochastic Completion Fields: A Neural Model of Illusory Contour Shape and Salience

Description: We describe an algorithm and representation level theory of illusory contour shape and salience. Unlike previous theories, our model is derived from a single assumption--- namely, that the prior probability distribution of boundary completion shape can be modeled by a random walk in a lattice whose points are positions and orientations in the image plane (i.e., the space which one can reasonably assume is represented by neurons of the mammalian visual cortex). Our model does not employ numerical relaxation or other explicit minimization, but instead relies on the fact that the probability that a particle following a random walk will pass through a given position and orientation on a path joining two boundary fragments can be computed directly as the product of two vector-field convolutions. We show that for the random walk we define, the maximum likelihood paths are curves of least energy, that is, on average, random walks follow paths commonly assumed to model the shape of illusory co...

Contributor: The Pennsylvania State University CiteSeer Archives

Publisher: unknown

Date: 1999-03-09

Pubyear: 1995

Format: ps

Identifier: http://citeseer.ist.psu.edu/140645.html

Source: http://www.neci.nj.nec.com/homepages/dwj/nc2.ps.Z

Language: en

Rights: unrestricted

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