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Supervised classification for textured images

Jean-François Aujol 1 Gilles Aubert Laure Blanc-Féraud
1 ARIANA - Inverse problems in earth monitoring
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - SIS - Signal, Images et Systèmes
Abstract : In this report, we present a supervised classification model based on a variational approach. This model is specifically devoted to textured images. We want to get an optimal partition of an image which is composed of textures separated by regular interfaces. To reach this goal, we represent the regions defined by the classes as well as their interfaces by level set functions. We define a functional on these level sets whose minimizers define an optimal partition. In particular, this functional owns a data term specific to textures. We use a packet wavelet transform to analyze the textures, these ones being characterized by their energy distribution in each sub-band of the decomposition. The partial differential equations (PDE) related to the minimization of the functional are embeded in a dynamical scheme. Given an initial interface set (zero level set), the different terms of the PDE's govern the motion of interfaces such that, at convergence, we get an optimal partition as defined above. Each interface is guided by external forces (regularity of the interface), and internal ones (data term and partition constraints). We have conducted several experiments on both synthetic and real images.
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https://hal.inria.fr/inria-00071945
Contributor : Rapport de Recherche Inria <>
Submitted on : Tuesday, May 23, 2006 - 7:20:02 PM
Last modification on : Monday, October 12, 2020 - 10:30:17 AM
Long-term archiving on: : Sunday, April 4, 2010 - 8:52:45 PM

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  • HAL Id : inria-00071945, version 1

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Jean-François Aujol, Gilles Aubert, Laure Blanc-Féraud. Supervised classification for textured images. RR-4640, INRIA. 2002. ⟨inria-00071945⟩

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