Peripheral vision by a real time 3D system for analysing dynamic scenes

Many applications in robotics need enhanced vision systems able to give a reliable 3D information of the focused objects in a dynamic scene context . In this paper we propose a complete system (including the conception of sensors, their disposition and th e information processing) for observing a scene in a peripheral way, this means that it will cover 360° of angle, and for evaluatin g the observed objects' distances .De nombreuses applications en robotique exigent des systèmes de vision de plus en plus performants permettant de restituer l'espace 3D observé le plus fidèlement possible et dans un contexte de scène dynamique. Dans cette contribution on propose un système complet temps réel (comprenant la conception des capteurs, leur disposition, et le traitement informatique de l'information) visant à observer une scène de façon périphérique, c'est à dire couvrant 360° d'angle, et à évaluer les distances des objets observés

Effect of annealing on structural and magnetic properties of Pr2Co7 compounds

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Effect of manganese doping on the electronic structure and optical properties of Ce2Fe17-x Mn x (x = 0, 1, 2)

In this paper we investigate the electronic structure and optical properties of the Ce2Fe17-xMnx (x = 0, 1, 2) intermetallic compounds and their change with the Mn-concentration growth within theoretical ab initio calculations. From these results we plot and compare experimental and theoretical optical conductivity utilizing interband transitions to interpret the experimental curve. To estimate the influence of manganese substitutions on the 3d sublattice, exchange Fe/Mn interaction parameters were computed and analysed. It was found that for the Mn substitutional impurity in the dumbbell positions the dominating ferromagnetic exchange interaction becomes the antiferromagnetic one favoring noncollinear magnetic ordering which was found in Ce2Fe17-xMnx at low temperatures