title: Superparamagnetic segmentation by excitable neural systems.
abstract: Magnetic modeling for clustering or segmentation purposes can either associate the image data to external quenched fields or to the interactions among a set of auxiliary variables. The latter gives rise to superparamagnetic segmentation and is usually done with Potts systems. We have used the superparamagnetic clustering technique to segment images, with the aid of different associated systems. Results using Potts model are comparable to those obtained using excitable FitzHugh-Nagumo and Morris-Lecar model neurons. Interactions between the associated system components are a function of the difference of luminosity on a gray scale of neighbor pixels and the difference of membrane potential.
authors.affiliation: Departamento de Física Geral, Instituto de Física, Universidade de São Paulo, Rua do Matão Travessa R 187, CEP 05508-900, São Paulo, Brazil.
authors.forename: Juan P
authors.initials: JP
authors.lastname: Neirotti
authors.forename: Samuel M
authors.initials: SM
authors.lastname: Kurcbart
authors.forename: Nestor
authors.initials: N
authors.lastname: Caticha
mesh_terms: D000818:Animals; D001921:Brain / Q000473:pathology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008280:Magnetics; D008564:Membrane Potentials; D008953:Models, Anatomic; D015233:Models, Statistical; D009010:Monte Carlo Method; D009474:Neurons / Q000378:metabolism / Q000502:physiology*; D009991:Oscillometry