The method we propose simpli es the practical procedure for hand eye calibration Indeed no more calibration jig is needed and small calibration motions can be used Without calibration jig camera motions are computed up to an unknown scale factor through structure from motion algorithms rather than pose estimation This work was supported by the European Community through the Esprit IV reactive L...

A new bisimulation based semantics, called performance equivalence, is proposed for a finite process algebra. It equates systems whenever they perform the same actions in the same amount of time, thus introducing a simple form of performance evaluation in process algebras. A comparison with other equivalences is provided; in particular, we show that performance equivalence is strictly finer tha...

Une série d'articles stimulants [5][6][31][32] a défendu l'importance de la dimension sociale dans la construction d'un cycle de vie du Web sémantique et propose une nouvelle approche (le Web socio-sémantique) que les auteurs opposent radicalement, à l' approche classique du Web sémantique. Loin de remettre en cause cette importance, cet article reprend ici le discours de ces contributions et m...

Dans cet article, on introduit le problème de synthèse de contrôleurs optimaux des systèmes à événements discrets et nous proposons une procédure pour la résolution de ce problème, dans le cas où le procédé et les spécifications sont représentés par des automates à états finis et présentant une complexité croissante. Nous allons souscrire à la méthodologie de synthèse selon la théorie de la com...

Following recent results 5] showing the importance of the fat shattering dimension in explaining the beneecial eeect of a large margin on generalization performance, the current paper investigates how the margin on a test example can be used to give greater certainty of correct classii-cation in the distribution independent model. The results show that even if the classiier does not classify al...

This paper presents preliminary results on the design of an Object Coprocessor (OCP) cooperating with a RISC– architecture processor (ARM7, by Advanced RISC Machines Ltd.). This coprocessor implements in hardware some low–level processing and control steps required by the object–oriented model. The processor and the OCP constitute a processing architecture whose extended instruction set feature...

Starting with a classification of relevant services and applications, a survey of existing techniques used for traffic source modelling is given. The need for new approaches which are capable of modelling the user behaviour is identified. Some seminal work in this direction is reported based on which a layered modelling approach is proposed. A section on solution techniques rounds off the deliv...

Abstract It is often possible to describe the correct functioning of a system by a mathematical model. As long as observations or measurements correspond to the predictions made by the model, the system may be assumed to be functioning correctly. When, however, a discrepancy arises between the observations and the model-based predictions, then an explanation for this fact has to be found. The f...