51,311 research outputs found

    Observation of the March Maximum in the Daemon Flux from Neos in the Year 2005: New Efforts and New Effects

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    The experiments of 2005 aimed at detection of low-velocity (~10-15 km s-1) daemons falling on to the Earth's surface from Near-Earth, Almost Circular Heliocentric Orbits (NEACHOs) have corroborated once more the existence of the March maximum in their flux by raising its confidence level to 99.99%. In addition, these experiments permitted us to identify several FEU-167-1-type PM tubes, with a few times thicker inner Al coating, which appear to be capable to detect, without any scintillator, the crossing of negatively charged daemons. As a result, detection efficiency increases tens of times, thus raising the measured level of the March daemon flux to f > 0.5E-7 cm-2s-1.Comment: 14 page

    Scalable software architecture for on-line multi-camera video processing

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    In this paper we present a scalable software architecture for on-line multi-camera video processing, that guarantees a good trade off between computational power, scalability and flexibility. The software system is modular and its main blocks are the Processing Units (PUs), and the Central Unit. The Central Unit works as a supervisor of the running PUs and each PU manages the acquisition phase and the processing phase. Furthermore, an approach to easily parallelize the desired processing application has been presented. In this paper, as case study, we apply the proposed software architecture to a multi-camera system in order to efficiently manage multiple 2D object detection modules in a real-time scenario. System performance has been evaluated under different load conditions such as number of cameras and image sizes. The results show that the software architecture scales well with the number of camera and can easily works with different image formats respecting the real time constraints. Moreover, the parallelization approach can be used in order to speed up the processing tasks with a low level of overhea

    CORBYS cognitive control architecture for robotic follower

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    In this paper the novel generic cognitive robot control architecture CORBYS is presented. The objective of the CORBYS architecture is the integration of high-level cognitive modules to support robot functioning in dynamic environments including interacting with humans. This paper presents the preliminary integration of the CORBYS architecture to support a robotic follower. Experimental results on high-level empowerment-based trajectory planning have demonstrated the effectiveness of ROS-based communication between distributed modules developed in a multi-site research environment as typical for distributed collaborative projects such as CORBYS

    Cognitive visual tracking and camera control

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    Cognitive visual tracking is the process of observing and understanding the behaviour of a moving person. This paper presents an efficient solution to extract, in real-time, high-level information from an observed scene, and generate the most appropriate commands for a set of pan-tilt-zoom (PTZ) cameras in a surveillance scenario. Such a high-level feedback control loop, which is the main novelty of our work, will serve to reduce uncertainties in the observed scene and to maximize the amount of information extracted from it. It is implemented with a distributed camera system using SQL tables as virtual communication channels, and Situation Graph Trees for knowledge representation, inference and high-level camera control. A set of experiments in a surveillance scenario show the effectiveness of our approach and its potential for real applications of cognitive vision
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