A Markov Point Process for Road Extraction in Remote Sensed Images

Radu Stoica 1 Xavier Descombes 1 Josiane Zerubia 1
1 ARIANA - Inverse problems in earth monitoring
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - SIS - Signal, Images et Systèmes
Abstract : In this paper we propose a new method to extract roads in remote sensed images. Our approach is based on stochastic geometry theory and reversible jump Monte Carlo Markov Chains dynamic. We consider that roads consist of a thin network in the image. We make the hypothesis that such a network can be approximated by a network composed of connected line segments. We build a marked point process, which is able to simulate and detect thin networks. The segments have to be connected, in order to form a line-netw- ork. Aligned segments are favored whereas superposition is penalized. Those constraints are taken in account by the prior model (Candy model), which is an area-interaction point process.The location of the network and the specifities of a road network in the image are given by the likelihood term. This term is based on statistical hypothesis tests. The proposed probabilistic model yelds a MAP estimator of the road network. In order to avoid local minima, a simulated annealing algorithm, using a reversible jump MCMC dynamic is designed. Results are shown on SPOT, ERS and aerial images.
Type de document :
[Research Report] RR-3923, INRIA. 2000, pp.38
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Soumis le : mercredi 24 mai 2006 - 10:42:56
Dernière modification le : lundi 5 novembre 2018 - 15:52:01
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  • HAL Id : inria-00072729, version 1



Radu Stoica, Xavier Descombes, Josiane Zerubia. A Markov Point Process for Road Extraction in Remote Sensed Images. [Research Report] RR-3923, INRIA. 2000, pp.38. 〈inria-00072729〉



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