Pierre Gambarotto

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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)
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