Monthly
288 pp. per issue
6 x 9, illustrated
ISSN
0899-7667
E-ISSN
1530-888X
2014 Impact factor:
2.21

Neural Computation

August 1, 2001, Vol. 13, No. 8, Pages 1683-1711
(doi: 10.1162/08997660152469305)
© 2001 Massachusetts Institute of Technology
Orientation, Scale, and Discontinuity as Emergent Properties of Illusory Contour Shape
Article PDF (200.41 KB)
Abstract

A recent neural model of illusory contour formation is based on a distribution of natural shapes traced by particles moving with constant speed in directions given by Brownian motions. The input to that model consists of pairs of position and direction constraints, and the output consists of the distribution of contours joining all such pairs. In general, these contours will not be closed, and their distribution will not be scaleinvariant. In this article, we show how to compute a scale-invariant distribution of closed contours given position constraints alone and use this result to explain a well-known illusory contour effect.