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Développement d'une approche SIG pour l'intégration de données Terre/Mer

Abstract : The coastal domain is a delicate environment standing at the land/sea border, an area where the terrestrial, the maritime and the atmospheric areas all exert their own forms of influence and pressure. Today's more comprehensive management of the coasts aims to overcome the failings demonstrated in previous policies by considering all simultaneous interactions from the various littoral actors. This approach requires a seamless Digital Elevation Model (DEM) with coherent terrestrial and maritime data. Owing to the diversity in the sources of captured data and in the methods of DEM production, the relief as a whole is rarely processed with continuity and homogeneity. Moreover, the current DEM integration techniques usually result in smoothing the relief or in the loss of the relief's main features. That is why new tools and a whole DEM integration method were defined. These tools use the Fréchet distance to compute a maximum distance gap between homologous points from two lines. The value of this distance gives a shape similarity measure which is used as a reference in the later matching process. The merging methodology presented in this PhD purports to be generic with a specifical landscape feature line basis. It performs a sequence of processing divided into three main steps: 1) cartographic transformations and overlapping area analysis; 2) segmentation and feature lines extraction; 3) DEM matching and merging with rubber sheeting deformations. Those integration tools were tested in 2D on real data for the coastline comparison, and then validated on simulated DEM.
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Submitted on : Thursday, December 2, 2010 - 5:25:21 PM
Last modification on : Friday, August 5, 2022 - 2:53:59 PM
Long-term archiving on: : Thursday, March 3, 2011 - 3:03:29 AM


  • HAL Id : pastel-00542500, version 1


Ariane Mascret. Développement d'une approche SIG pour l'intégration de données Terre/Mer. Informatique ubiquitaire. Arts et Métiers ParisTech, 2010. Français. ⟨NNT : 2010ENAM0006⟩. ⟨pastel-00542500⟩



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