Pierre Gambarotto

Learn More
This article is concerned by necessary concepts to be expressed in qualitative region-based geometry. In this ongoing work is presented a method to associate to an object a set of spheres representing the shape (skeleton and thickness) and the orientation. A general framework on direction is developed and the limited case of convex is completely achieved.(More)
This paper describes a method for constructing an abstract representation of a shape from a classical polyhedral 3D representation of an object. This framework is suitable for qualitative reasoning. As an application we use this abstract representation to compute the structural symmetries of a 3D polyhedron. The starting point of the computation is a(More)
The method presented in this paper aims to reduce the computational costs of some kinds of navigation in a world with obstacles. We give algorithms to capture the logical structure of an object given a polygonal representation of it. Then these algorithms are used in conjunction with the notion of functional granularity to handle navigation of a moving(More)
  • 1