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James P. Crutchfield |
ABSTRACT: Video feedback provides a readily available experimental system to study complex spatial and temporal dynamics.This article outlines the use and modeling of video feedback systems. It includes a discussion of video physics and proposes two models for video feedback dynamics based on a discrete-time iterated functional equation and on a reaction-diffusion partial differential equation. Color photographs illustrate results from actual video experiments. Digital computer simulations of the models reproduce the basic spatio-temporal dynamic found in the experiments.