Thomas Devogele

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Building multiple representations is one of the key problems in GIS. To tackle this problem, we have chosen to connect geographic data from mono-scale representations to build a multi-scale database with scale-transition relationships. These scale-transition relationships connect two sets of elements (classes, types or objects) representing the same(More)
More and more mobile objects are now equipped with sensors allowing real time monitoring of their movements. Nowadays, the data produced by these sensors can be stored in spatio-temporal databases. The main goal of this article is to perform a data mining on a huge quantity of mobile object’s positions moving in an open space in order to deduce its(More)
Automatic Identification Systems (AIS) currently used to detect and warn about possible maritime navigation collisions are a suitable solution for well equipped ships, but are unfortunately quite expensive and difficult to maintain for small ships and pleasure boats. The Share-Loc project purpose is to design and implement an alternative maritime navigation(More)
Spatial distances are the main tools used for data matching and control quality. This paper describes new measures adapted to sinuous lines to compute the maximal and average discrepancy: Discrete Fréchet distance and Discrete Average Fréchet distance. Afterwards, a global process is defined to automatically handle two sets of lines. The usefulness of these(More)