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

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 p...

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Bibliographic Details
Main Authors: El Ghoul, A., Jermyn, I.H., Zerubia, J.
Format: Conference Proceeding
Language:English
Subjects:
Active contours
Active shape model
Arm
Image resolution
Image segmentation
Region 1
Remote monitoring
Satellites
Stability analysis
Water resources
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Summary: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 dasiagas of circlespsila. 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.
ISSN:1051-4651
2831-7475
DOI:10.1109/ICPR.2008.4761894