Phase diagram of a long bar under a higher-order active contour energy: application to hydrographic network extraction from VHR satellite images.

Aymen El Ghoul 1 Ian Jermyn 1 Josiane Zerubia 1
1 ARIANA - Inverse problems in earth monitoring
CRISAM - Inria Sophia Antipolis - Méditerranée , SIS - Signal, Images et Systèmes
Abstract : The segmentation of networks is important in several imaging domains, and models incorporating prior shape knowledge are often essential for the automatic performance of this task. Higher-order active contours provide a way to include such knowledge, but their behaviour can vary significantly with parameter values: e.g. the same energy can model networks or a ‘gas of circles'. In this paper, we present a stability analysis of a HOAC energy leading to the phase diagram of a long bar. The results, which are confirmed by numerical experiments, enable the selection of parameter values for the modelling of network shapes using the energy. We apply the resulting model to the problem of hydrographic network extraction from VHR satellite images.
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Communication dans un congrès
ICPR, Dec 2008, Tampa, Floride, United States. 2008
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Aymen El Ghoul, Ian Jermyn, Josiane Zerubia. Phase diagram of a long bar under a higher-order active contour energy: application to hydrographic network extraction from VHR satellite images.. ICPR, Dec 2008, Tampa, Floride, United States. 2008. 〈inria-00316619〉

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