Contour Dynamics Methods

Dynamics of contour integration

To determine the dynamics of contour integration the temporal properties of the individual contour elements were varied as well as those of the contour they form. A temporal version of a contour integration paradigm (Field, D. J., Hayes, A., & Hess, R. F. (1993) Vision Research, 33, 173-193) was used to assess these two temporal dynamics as a function of the contrast of individual elements and ...

Does contour dynamics go singular?

Cellular Automata for Contour Dynamics Introduction

The dynamics of deterministic partially permutive cellular automata in two dimensions is considered. In particular we lay out the design principles and analyze the dynamics of generalized voter-type rules. They provide a two parameter model class of cellular automata which exhibit annealing, diiusive and critical domain behavior. We analyze the dynamics rigorously in certain cases and also show...

Contour dynamics model for electric discharges.

We present an effective contour model for electrical discharges deduced as the asymptotic limit of the minimal streamer model for the propagation of electric discharges, in the limit of small electron diffusion. The incorporation of curvature effects to the velocity propagation and not to the boundary conditions is a feature and makes it different from the classical Laplacian growth models. The...

Contour Estimation by Array Processing Methods

This work is devoted to the estimation of rectilinear and distorted contours in images by high-resolution methods. In the case of rectilinear contours, it has been shown that it is possible to transpose this image processing problem to an array processing problem. The existing straight line characterization method called subspace-based line detection (SLIDE) leads to models with orientations an...